mirror of
https://github.com/dborth/vbagx.git
synced 2024-11-01 16:35:11 +01:00
5753 lines
159 KiB
C++
5753 lines
159 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "../System.h"
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#include "../NLS.h"
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#include "gb.h"
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#include "gbCheats.h"
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#include "gbGlobals.h"
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#include "gbMemory.h"
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#include "gbSGB.h"
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#include "gbSound.h"
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#include "../Util.h"
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#ifdef __GNUC__
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#define _stricmp strcasecmp
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#endif
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void gbSetBGPalette(u8 value, bool ColoursChanged=false);
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void gbSetObj0Palette(u8 value, bool ColoursChanged=false);
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void gbSetObj1Palette(u8 value, bool ColoursChanged=false);
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void gbPaletteReset();
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extern u8 *pix;
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extern bool speedup;
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bool gbUpdateSizes();
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bool inBios = false;
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// debugging
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bool memorydebug = false;
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char gbBuffer[2048];
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extern u16 gbLineMix[160];
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// mappers
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void (*mapper)(u16,u8) = NULL;
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void (*mapperRAM)(u16,u8) = NULL;
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u8 (*mapperReadRAM)(u16) = NULL;
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void (*mapperUpdateClock)() = NULL;
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// registers
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gbRegister PC;
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gbRegister SP;
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gbRegister AF;
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gbRegister BC;
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gbRegister DE;
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gbRegister HL;
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u16 IFF = 0;
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// 0xff04
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u8 register_DIV = 0;
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// 0xff05
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u8 register_TIMA = 0;
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// 0xff06
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u8 register_TMA = 0;
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// 0xff07
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u8 register_TAC = 0;
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// 0xff0f
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u8 register_IF = 0;
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// 0xff40
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u8 register_LCDC = 0;
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// 0xff41
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u8 register_STAT = 0;
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// 0xff42
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u8 register_SCY = 0;
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// 0xff43
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u8 register_SCX = 0;
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// 0xff44
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u8 register_LY = 0;
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// 0xff45
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u8 register_LYC = 0;
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// 0xff46
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u8 register_DMA = 0;
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// 0xff4a
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u8 register_WY = 0;
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// 0xff4b
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u8 register_WX = 0;
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// 0xff4f
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u8 register_VBK = 0;
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// 0xff51
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u8 register_HDMA1 = 0;
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// 0xff52
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u8 register_HDMA2 = 0;
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// 0xff53
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u8 register_HDMA3 = 0;
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// 0xff54
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u8 register_HDMA4 = 0;
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// 0xff55
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u8 register_HDMA5 = 0;
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// 0xff70
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u8 register_SVBK = 0;
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// 0xffff
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u8 register_IE = 0;
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// ticks definition
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int GBDIV_CLOCK_TICKS = 64;
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int GBLCD_MODE_0_CLOCK_TICKS = 51;
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int GBLCD_MODE_1_CLOCK_TICKS = 1140;
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int GBLCD_MODE_2_CLOCK_TICKS = 20;
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int GBLCD_MODE_3_CLOCK_TICKS = 43;
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int GBLY_INCREMENT_CLOCK_TICKS = 114;
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int GBTIMER_MODE_0_CLOCK_TICKS = 256;
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int GBTIMER_MODE_1_CLOCK_TICKS = 4;
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int GBTIMER_MODE_2_CLOCK_TICKS = 16;
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int GBTIMER_MODE_3_CLOCK_TICKS = 64;
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int GBSERIAL_CLOCK_TICKS = 128;
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int GBSYNCHRONIZE_CLOCK_TICKS = 52920;
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// state variables
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// general
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int clockTicks = 0;
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bool gbSystemMessage = false;
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int gbGBCColorType = 0;
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int gbHardware = 0;
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int gbRomType = 0;
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int gbRemainingClockTicks = 0;
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int gbOldClockTicks = 0;
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int gbIntBreak = 0;
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int gbInterruptLaunched = 0;
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u8 gbCheatingDevice = 0; // 1 = GS, 2 = GG
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// breakpoint
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bool breakpoint = false;
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// interrupt
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int gbInt48Signal = 0;
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int gbInterruptWait = 0;
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// serial
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int gbSerialOn = 0;
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int gbSerialTicks = 0;
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int gbSerialBits = 0;
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// timer
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bool gbTimerOn = false;
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int gbTimerTicks = GBTIMER_MODE_0_CLOCK_TICKS;
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int gbTimerClockTicks = GBTIMER_MODE_0_CLOCK_TICKS;
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int gbTimerMode = 0;
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bool gbIncreased = false;
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// The internal timer is always active, and it is
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// not reset by writing to register_TIMA/TMA, but by
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// writing to register_DIV...
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int gbInternalTimer = 0x55;
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const u8 gbTimerMask [4] = {0xff, 0x3, 0xf, 0x3f};
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const u8 gbTimerBug [8] = {0x80, 0x80, 0x02, 0x02, 0x0, 0xff, 0x0, 0xff};
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bool gbTimerModeChange = false;
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bool gbTimerOnChange = false;
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// lcd
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bool gbScreenOn = true;
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int gbLcdMode = 2;
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int gbLcdModeDelayed = 2;
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int gbLcdTicks = GBLCD_MODE_2_CLOCK_TICKS-1;
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int gbLcdTicksDelayed = GBLCD_MODE_2_CLOCK_TICKS;
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int gbLcdLYIncrementTicks = 114;
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int gbLcdLYIncrementTicksDelayed = 115;
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int gbScreenTicks = 0;
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u8 gbSCYLine[300];
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u8 gbSCXLine[300];
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u8 gbBgpLine[300];
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u8 gbObp0Line [300];
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u8 gbObp1Line [300];
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u8 gbSpritesTicks [300];
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u8 oldRegister_WY;
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bool gbLYChangeHappened = false;
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bool gbLCDChangeHappened = false;
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int gbLine99Ticks = 1;
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int gbRegisterLYLCDCOffOn = 0;
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int inUseRegister_WY = 0;
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// Used to keep track of the line that ellapse
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// when screen is off
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int gbWhiteScreen = 0;
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bool gbBlackScreen = false;
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int register_LCDCBusy = 0;
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// div
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int gbDivTicks = GBDIV_CLOCK_TICKS;
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// cgb
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int gbVramBank = 0;
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int gbWramBank = 1;
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//sgb
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bool gbSgbResetFlag = false;
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// gbHdmaDestination is 0x99d0 on startup (tested on HW)
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// but I'm not sure what gbHdmaSource is...
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int gbHdmaSource = 0x99d0;
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int gbHdmaDestination = 0x99d0;
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int gbHdmaBytes = 0x0000;
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int gbHdmaOn = 0;
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int gbSpeed = 0;
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// frame counting
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int gbFrameCount = 0;
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int gbFrameSkip = 0;
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int gbFrameSkipCount = 0;
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// timing
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u32 gbLastTime = 0;
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u32 gbElapsedTime = 0;
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u32 gbTimeNow = 0;
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int gbSynchronizeTicks = GBSYNCHRONIZE_CLOCK_TICKS;
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// emulator features
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int gbBattery = 0;
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bool gbBatteryError = false;
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int gbCaptureNumber = 0;
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bool gbCapture = false;
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bool gbCapturePrevious = false;
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int gbJoymask[4] = { 0, 0, 0, 0 };
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u8 gbRamFill = 0xff;
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int gbRomSizes[] = { 0x00008000, // 32K
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0x00010000, // 64K
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0x00020000, // 128K
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0x00040000, // 256K
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0x00080000, // 512K
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0x00100000, // 1024K
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0x00200000, // 2048K
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0x00400000, // 4096K
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0x00800000 // 8192K
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};
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int gbRomSizesMasks[] = { 0x00007fff,
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0x0000ffff,
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0x0001ffff,
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0x0003ffff,
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0x0007ffff,
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0x000fffff,
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0x001fffff,
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0x003fffff,
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0x007fffff
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};
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int gbRamSizes[6] = { 0x00000000, // 0K
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0x00002000, // 2K // Changed to 2000 to avoid problems with gbMemoryMap...
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0x00002000, // 8K
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0x00008000, // 32K
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0x00020000, // 128K
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0x00010000 // 64K
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};
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int gbRamSizesMasks[6] = { 0x00000000,
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0x000007ff,
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0x00001fff,
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0x00007fff,
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0x0001ffff,
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0x0000ffff
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};
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int gbCycles[] = {
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// 0 1 2 3 4 5 6 7 8 9 a b c d e f
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1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, // 0
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1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, // 1
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2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, // 2
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2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, // 3
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1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 4
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1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 5
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1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 6
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2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, // 7
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1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 8
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1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 9
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1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // a
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1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // b
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2, 3, 3, 4, 3, 4, 2, 4, 2, 4, 3, 2, 3, 6, 2, 4, // c
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2, 3, 3, 1, 3, 4, 2, 4, 2, 4, 3, 1, 3, 1, 2, 4, // d
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3, 3, 2, 1, 1, 4, 2, 4, 4, 1, 4, 1, 1, 1, 2, 4, // e
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3, 3, 2, 1, 1, 4, 2, 4, 3, 2, 4, 1, 0, 1, 2, 4 // f
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};
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int gbCyclesCB[] = {
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// 0 1 2 3 4 5 6 7 8 9 a b c d e f
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 0
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 1
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 2
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 3
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2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 4
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2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 5
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2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 6
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2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 7
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 8
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 9
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // a
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // b
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // c
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // d
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // e
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2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2 // f
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};
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u16 DAATable[] = {
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0x0080,0x0100,0x0200,0x0300,0x0400,0x0500,0x0600,0x0700,
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0x0800,0x0900,0x1020,0x1120,0x1220,0x1320,0x1420,0x1520,
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0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700,
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0x1800,0x1900,0x2020,0x2120,0x2220,0x2320,0x2420,0x2520,
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0x2000,0x2100,0x2200,0x2300,0x2400,0x2500,0x2600,0x2700,
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0x2800,0x2900,0x3020,0x3120,0x3220,0x3320,0x3420,0x3520,
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0x3000,0x3100,0x3200,0x3300,0x3400,0x3500,0x3600,0x3700,
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0x3800,0x3900,0x4020,0x4120,0x4220,0x4320,0x4420,0x4520,
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0x4000,0x4100,0x4200,0x4300,0x4400,0x4500,0x4600,0x4700,
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0x4800,0x4900,0x5020,0x5120,0x5220,0x5320,0x5420,0x5520,
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0x5000,0x5100,0x5200,0x5300,0x5400,0x5500,0x5600,0x5700,
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0x5800,0x5900,0x6020,0x6120,0x6220,0x6320,0x6420,0x6520,
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0x6000,0x6100,0x6200,0x6300,0x6400,0x6500,0x6600,0x6700,
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0x6800,0x6900,0x7020,0x7120,0x7220,0x7320,0x7420,0x7520,
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0x7000,0x7100,0x7200,0x7300,0x7400,0x7500,0x7600,0x7700,
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0x7800,0x7900,0x8020,0x8120,0x8220,0x8320,0x8420,0x8520,
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0x8000,0x8100,0x8200,0x8300,0x8400,0x8500,0x8600,0x8700,
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0x8800,0x8900,0x9020,0x9120,0x9220,0x9320,0x9420,0x9520,
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0x9000,0x9100,0x9200,0x9300,0x9400,0x9500,0x9600,0x9700,
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0x9800,0x9900,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530,
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0x0090,0x0110,0x0210,0x0310,0x0410,0x0510,0x0610,0x0710,
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0x0810,0x0910,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530,
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0x1010,0x1110,0x1210,0x1310,0x1410,0x1510,0x1610,0x1710,
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0x1810,0x1910,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530,
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0x2010,0x2110,0x2210,0x2310,0x2410,0x2510,0x2610,0x2710,
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0x2810,0x2910,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530,
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0x3010,0x3110,0x3210,0x3310,0x3410,0x3510,0x3610,0x3710,
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0x3810,0x3910,0x4030,0x4130,0x4230,0x4330,0x4430,0x4530,
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0x4010,0x4110,0x4210,0x4310,0x4410,0x4510,0x4610,0x4710,
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0x4810,0x4910,0x5030,0x5130,0x5230,0x5330,0x5430,0x5530,
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0x5010,0x5110,0x5210,0x5310,0x5410,0x5510,0x5610,0x5710,
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0x5810,0x5910,0x6030,0x6130,0x6230,0x6330,0x6430,0x6530,
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0x6010,0x6110,0x6210,0x6310,0x6410,0x6510,0x6610,0x6710,
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0x6810,0x6910,0x7030,0x7130,0x7230,0x7330,0x7430,0x7530,
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0x7010,0x7110,0x7210,0x7310,0x7410,0x7510,0x7610,0x7710,
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0x7810,0x7910,0x8030,0x8130,0x8230,0x8330,0x8430,0x8530,
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0x8010,0x8110,0x8210,0x8310,0x8410,0x8510,0x8610,0x8710,
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0x8810,0x8910,0x9030,0x9130,0x9230,0x9330,0x9430,0x9530,
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0x9010,0x9110,0x9210,0x9310,0x9410,0x9510,0x9610,0x9710,
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0x9810,0x9910,0xA030,0xA130,0xA230,0xA330,0xA430,0xA530,
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0xA010,0xA110,0xA210,0xA310,0xA410,0xA510,0xA610,0xA710,
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0xA810,0xA910,0xB030,0xB130,0xB230,0xB330,0xB430,0xB530,
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0xB010,0xB110,0xB210,0xB310,0xB410,0xB510,0xB610,0xB710,
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0xB810,0xB910,0xC030,0xC130,0xC230,0xC330,0xC430,0xC530,
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0xC010,0xC110,0xC210,0xC310,0xC410,0xC510,0xC610,0xC710,
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0xC810,0xC910,0xD030,0xD130,0xD230,0xD330,0xD430,0xD530,
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0xD010,0xD110,0xD210,0xD310,0xD410,0xD510,0xD610,0xD710,
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0xD810,0xD910,0xE030,0xE130,0xE230,0xE330,0xE430,0xE530,
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0xE010,0xE110,0xE210,0xE310,0xE410,0xE510,0xE610,0xE710,
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0xE810,0xE910,0xF030,0xF130,0xF230,0xF330,0xF430,0xF530,
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0xF010,0xF110,0xF210,0xF310,0xF410,0xF510,0xF610,0xF710,
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0xF810,0xF910,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530,
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0x0090,0x0110,0x0210,0x0310,0x0410,0x0510,0x0610,0x0710,
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0x0810,0x0910,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530,
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0x1010,0x1110,0x1210,0x1310,0x1410,0x1510,0x1610,0x1710,
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0x1810,0x1910,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530,
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0x2010,0x2110,0x2210,0x2310,0x2410,0x2510,0x2610,0x2710,
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0x2810,0x2910,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530,
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0x3010,0x3110,0x3210,0x3310,0x3410,0x3510,0x3610,0x3710,
|
|
0x3810,0x3910,0x4030,0x4130,0x4230,0x4330,0x4430,0x4530,
|
|
0x4010,0x4110,0x4210,0x4310,0x4410,0x4510,0x4610,0x4710,
|
|
0x4810,0x4910,0x5030,0x5130,0x5230,0x5330,0x5430,0x5530,
|
|
0x5010,0x5110,0x5210,0x5310,0x5410,0x5510,0x5610,0x5710,
|
|
0x5810,0x5910,0x6030,0x6130,0x6230,0x6330,0x6430,0x6530,
|
|
0x0600,0x0700,0x0800,0x0900,0x0A00,0x0B00,0x0C00,0x0D00,
|
|
0x0E00,0x0F00,0x1020,0x1120,0x1220,0x1320,0x1420,0x1520,
|
|
0x1600,0x1700,0x1800,0x1900,0x1A00,0x1B00,0x1C00,0x1D00,
|
|
0x1E00,0x1F00,0x2020,0x2120,0x2220,0x2320,0x2420,0x2520,
|
|
0x2600,0x2700,0x2800,0x2900,0x2A00,0x2B00,0x2C00,0x2D00,
|
|
0x2E00,0x2F00,0x3020,0x3120,0x3220,0x3320,0x3420,0x3520,
|
|
0x3600,0x3700,0x3800,0x3900,0x3A00,0x3B00,0x3C00,0x3D00,
|
|
0x3E00,0x3F00,0x4020,0x4120,0x4220,0x4320,0x4420,0x4520,
|
|
0x4600,0x4700,0x4800,0x4900,0x4A00,0x4B00,0x4C00,0x4D00,
|
|
0x4E00,0x4F00,0x5020,0x5120,0x5220,0x5320,0x5420,0x5520,
|
|
0x5600,0x5700,0x5800,0x5900,0x5A00,0x5B00,0x5C00,0x5D00,
|
|
0x5E00,0x5F00,0x6020,0x6120,0x6220,0x6320,0x6420,0x6520,
|
|
0x6600,0x6700,0x6800,0x6900,0x6A00,0x6B00,0x6C00,0x6D00,
|
|
0x6E00,0x6F00,0x7020,0x7120,0x7220,0x7320,0x7420,0x7520,
|
|
0x7600,0x7700,0x7800,0x7900,0x7A00,0x7B00,0x7C00,0x7D00,
|
|
0x7E00,0x7F00,0x8020,0x8120,0x8220,0x8320,0x8420,0x8520,
|
|
0x8600,0x8700,0x8800,0x8900,0x8A00,0x8B00,0x8C00,0x8D00,
|
|
0x8E00,0x8F00,0x9020,0x9120,0x9220,0x9320,0x9420,0x9520,
|
|
0x9600,0x9700,0x9800,0x9900,0x9A00,0x9B00,0x9C00,0x9D00,
|
|
0x9E00,0x9F00,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530,
|
|
0x0610,0x0710,0x0810,0x0910,0x0A10,0x0B10,0x0C10,0x0D10,
|
|
0x0E10,0x0F10,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530,
|
|
0x1610,0x1710,0x1810,0x1910,0x1A10,0x1B10,0x1C10,0x1D10,
|
|
0x1E10,0x1F10,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530,
|
|
0x2610,0x2710,0x2810,0x2910,0x2A10,0x2B10,0x2C10,0x2D10,
|
|
0x2E10,0x2F10,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530,
|
|
0x3610,0x3710,0x3810,0x3910,0x3A10,0x3B10,0x3C10,0x3D10,
|
|
0x3E10,0x3F10,0x4030,0x4130,0x4230,0x4330,0x4430,0x4530,
|
|
0x4610,0x4710,0x4810,0x4910,0x4A10,0x4B10,0x4C10,0x4D10,
|
|
0x4E10,0x4F10,0x5030,0x5130,0x5230,0x5330,0x5430,0x5530,
|
|
0x5610,0x5710,0x5810,0x5910,0x5A10,0x5B10,0x5C10,0x5D10,
|
|
0x5E10,0x5F10,0x6030,0x6130,0x6230,0x6330,0x6430,0x6530,
|
|
0x6610,0x6710,0x6810,0x6910,0x6A10,0x6B10,0x6C10,0x6D10,
|
|
0x6E10,0x6F10,0x7030,0x7130,0x7230,0x7330,0x7430,0x7530,
|
|
0x7610,0x7710,0x7810,0x7910,0x7A10,0x7B10,0x7C10,0x7D10,
|
|
0x7E10,0x7F10,0x8030,0x8130,0x8230,0x8330,0x8430,0x8530,
|
|
0x8610,0x8710,0x8810,0x8910,0x8A10,0x8B10,0x8C10,0x8D10,
|
|
0x8E10,0x8F10,0x9030,0x9130,0x9230,0x9330,0x9430,0x9530,
|
|
0x9610,0x9710,0x9810,0x9910,0x9A10,0x9B10,0x9C10,0x9D10,
|
|
0x9E10,0x9F10,0xA030,0xA130,0xA230,0xA330,0xA430,0xA530,
|
|
0xA610,0xA710,0xA810,0xA910,0xAA10,0xAB10,0xAC10,0xAD10,
|
|
0xAE10,0xAF10,0xB030,0xB130,0xB230,0xB330,0xB430,0xB530,
|
|
0xB610,0xB710,0xB810,0xB910,0xBA10,0xBB10,0xBC10,0xBD10,
|
|
0xBE10,0xBF10,0xC030,0xC130,0xC230,0xC330,0xC430,0xC530,
|
|
0xC610,0xC710,0xC810,0xC910,0xCA10,0xCB10,0xCC10,0xCD10,
|
|
0xCE10,0xCF10,0xD030,0xD130,0xD230,0xD330,0xD430,0xD530,
|
|
0xD610,0xD710,0xD810,0xD910,0xDA10,0xDB10,0xDC10,0xDD10,
|
|
0xDE10,0xDF10,0xE030,0xE130,0xE230,0xE330,0xE430,0xE530,
|
|
0xE610,0xE710,0xE810,0xE910,0xEA10,0xEB10,0xEC10,0xED10,
|
|
0xEE10,0xEF10,0xF030,0xF130,0xF230,0xF330,0xF430,0xF530,
|
|
0xF610,0xF710,0xF810,0xF910,0xFA10,0xFB10,0xFC10,0xFD10,
|
|
0xFE10,0xFF10,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530,
|
|
0x0610,0x0710,0x0810,0x0910,0x0A10,0x0B10,0x0C10,0x0D10,
|
|
0x0E10,0x0F10,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530,
|
|
0x1610,0x1710,0x1810,0x1910,0x1A10,0x1B10,0x1C10,0x1D10,
|
|
0x1E10,0x1F10,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530,
|
|
0x2610,0x2710,0x2810,0x2910,0x2A10,0x2B10,0x2C10,0x2D10,
|
|
0x2E10,0x2F10,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530,
|
|
0x3610,0x3710,0x3810,0x3910,0x3A10,0x3B10,0x3C10,0x3D10,
|
|
0x3E10,0x3F10,0x4030,0x4130,0x4230,0x4330,0x4430,0x4530,
|
|
0x4610,0x4710,0x4810,0x4910,0x4A10,0x4B10,0x4C10,0x4D10,
|
|
0x4E10,0x4F10,0x5030,0x5130,0x5230,0x5330,0x5430,0x5530,
|
|
0x5610,0x5710,0x5810,0x5910,0x5A10,0x5B10,0x5C10,0x5D10,
|
|
0x5E10,0x5F10,0x6030,0x6130,0x6230,0x6330,0x6430,0x6530,
|
|
0x00C0,0x0140,0x0240,0x0340,0x0440,0x0540,0x0640,0x0740,
|
|
0x0840,0x0940,0x0440,0x0540,0x0640,0x0740,0x0840,0x0940,
|
|
0x1040,0x1140,0x1240,0x1340,0x1440,0x1540,0x1640,0x1740,
|
|
0x1840,0x1940,0x1440,0x1540,0x1640,0x1740,0x1840,0x1940,
|
|
0x2040,0x2140,0x2240,0x2340,0x2440,0x2540,0x2640,0x2740,
|
|
0x2840,0x2940,0x2440,0x2540,0x2640,0x2740,0x2840,0x2940,
|
|
0x3040,0x3140,0x3240,0x3340,0x3440,0x3540,0x3640,0x3740,
|
|
0x3840,0x3940,0x3440,0x3540,0x3640,0x3740,0x3840,0x3940,
|
|
0x4040,0x4140,0x4240,0x4340,0x4440,0x4540,0x4640,0x4740,
|
|
0x4840,0x4940,0x4440,0x4540,0x4640,0x4740,0x4840,0x4940,
|
|
0x5040,0x5140,0x5240,0x5340,0x5440,0x5540,0x5640,0x5740,
|
|
0x5840,0x5940,0x5440,0x5540,0x5640,0x5740,0x5840,0x5940,
|
|
0x6040,0x6140,0x6240,0x6340,0x6440,0x6540,0x6640,0x6740,
|
|
0x6840,0x6940,0x6440,0x6540,0x6640,0x6740,0x6840,0x6940,
|
|
0x7040,0x7140,0x7240,0x7340,0x7440,0x7540,0x7640,0x7740,
|
|
0x7840,0x7940,0x7440,0x7540,0x7640,0x7740,0x7840,0x7940,
|
|
0x8040,0x8140,0x8240,0x8340,0x8440,0x8540,0x8640,0x8740,
|
|
0x8840,0x8940,0x8440,0x8540,0x8640,0x8740,0x8840,0x8940,
|
|
0x9040,0x9140,0x9240,0x9340,0x9440,0x9540,0x9640,0x9740,
|
|
0x9840,0x9940,0x3450,0x3550,0x3650,0x3750,0x3850,0x3950,
|
|
0x4050,0x4150,0x4250,0x4350,0x4450,0x4550,0x4650,0x4750,
|
|
0x4850,0x4950,0x4450,0x4550,0x4650,0x4750,0x4850,0x4950,
|
|
0x5050,0x5150,0x5250,0x5350,0x5450,0x5550,0x5650,0x5750,
|
|
0x5850,0x5950,0x5450,0x5550,0x5650,0x5750,0x5850,0x5950,
|
|
0x6050,0x6150,0x6250,0x6350,0x6450,0x6550,0x6650,0x6750,
|
|
0x6850,0x6950,0x6450,0x6550,0x6650,0x6750,0x6850,0x6950,
|
|
0x7050,0x7150,0x7250,0x7350,0x7450,0x7550,0x7650,0x7750,
|
|
0x7850,0x7950,0x7450,0x7550,0x7650,0x7750,0x7850,0x7950,
|
|
0x8050,0x8150,0x8250,0x8350,0x8450,0x8550,0x8650,0x8750,
|
|
0x8850,0x8950,0x8450,0x8550,0x8650,0x8750,0x8850,0x8950,
|
|
0x9050,0x9150,0x9250,0x9350,0x9450,0x9550,0x9650,0x9750,
|
|
0x9850,0x9950,0x9450,0x9550,0x9650,0x9750,0x9850,0x9950,
|
|
0xA050,0xA150,0xA250,0xA350,0xA450,0xA550,0xA650,0xA750,
|
|
0xA850,0xA950,0xA450,0xA550,0xA650,0xA750,0xA850,0xA950,
|
|
0xB050,0xB150,0xB250,0xB350,0xB450,0xB550,0xB650,0xB750,
|
|
0xB850,0xB950,0xB450,0xB550,0xB650,0xB750,0xB850,0xB950,
|
|
0xC050,0xC150,0xC250,0xC350,0xC450,0xC550,0xC650,0xC750,
|
|
0xC850,0xC950,0xC450,0xC550,0xC650,0xC750,0xC850,0xC950,
|
|
0xD050,0xD150,0xD250,0xD350,0xD450,0xD550,0xD650,0xD750,
|
|
0xD850,0xD950,0xD450,0xD550,0xD650,0xD750,0xD850,0xD950,
|
|
0xE050,0xE150,0xE250,0xE350,0xE450,0xE550,0xE650,0xE750,
|
|
0xE850,0xE950,0xE450,0xE550,0xE650,0xE750,0xE850,0xE950,
|
|
0xF050,0xF150,0xF250,0xF350,0xF450,0xF550,0xF650,0xF750,
|
|
0xF850,0xF950,0xF450,0xF550,0xF650,0xF750,0xF850,0xF950,
|
|
0x00D0,0x0150,0x0250,0x0350,0x0450,0x0550,0x0650,0x0750,
|
|
0x0850,0x0950,0x0450,0x0550,0x0650,0x0750,0x0850,0x0950,
|
|
0x1050,0x1150,0x1250,0x1350,0x1450,0x1550,0x1650,0x1750,
|
|
0x1850,0x1950,0x1450,0x1550,0x1650,0x1750,0x1850,0x1950,
|
|
0x2050,0x2150,0x2250,0x2350,0x2450,0x2550,0x2650,0x2750,
|
|
0x2850,0x2950,0x2450,0x2550,0x2650,0x2750,0x2850,0x2950,
|
|
0x3050,0x3150,0x3250,0x3350,0x3450,0x3550,0x3650,0x3750,
|
|
0x3850,0x3950,0x3450,0x3550,0x3650,0x3750,0x3850,0x3950,
|
|
0x4050,0x4150,0x4250,0x4350,0x4450,0x4550,0x4650,0x4750,
|
|
0x4850,0x4950,0x4450,0x4550,0x4650,0x4750,0x4850,0x4950,
|
|
0x5050,0x5150,0x5250,0x5350,0x5450,0x5550,0x5650,0x5750,
|
|
0x5850,0x5950,0x5450,0x5550,0x5650,0x5750,0x5850,0x5950,
|
|
0x6050,0x6150,0x6250,0x6350,0x6450,0x6550,0x6650,0x6750,
|
|
0x6850,0x6950,0x6450,0x6550,0x6650,0x6750,0x6850,0x6950,
|
|
0x7050,0x7150,0x7250,0x7350,0x7450,0x7550,0x7650,0x7750,
|
|
0x7850,0x7950,0x7450,0x7550,0x7650,0x7750,0x7850,0x7950,
|
|
0x8050,0x8150,0x8250,0x8350,0x8450,0x8550,0x8650,0x8750,
|
|
0x8850,0x8950,0x8450,0x8550,0x8650,0x8750,0x8850,0x8950,
|
|
0x9050,0x9150,0x9250,0x9350,0x9450,0x9550,0x9650,0x9750,
|
|
0x9850,0x9950,0x9450,0x9550,0x9650,0x9750,0x9850,0x9950,
|
|
0xFA60,0xFB60,0xFC60,0xFD60,0xFE60,0xFF60,0x00C0,0x0140,
|
|
0x0240,0x0340,0x0440,0x0540,0x0640,0x0740,0x0840,0x0940,
|
|
0x0A60,0x0B60,0x0C60,0x0D60,0x0E60,0x0F60,0x1040,0x1140,
|
|
0x1240,0x1340,0x1440,0x1540,0x1640,0x1740,0x1840,0x1940,
|
|
0x1A60,0x1B60,0x1C60,0x1D60,0x1E60,0x1F60,0x2040,0x2140,
|
|
0x2240,0x2340,0x2440,0x2540,0x2640,0x2740,0x2840,0x2940,
|
|
0x2A60,0x2B60,0x2C60,0x2D60,0x2E60,0x2F60,0x3040,0x3140,
|
|
0x3240,0x3340,0x3440,0x3540,0x3640,0x3740,0x3840,0x3940,
|
|
0x3A60,0x3B60,0x3C60,0x3D60,0x3E60,0x3F60,0x4040,0x4140,
|
|
0x4240,0x4340,0x4440,0x4540,0x4640,0x4740,0x4840,0x4940,
|
|
0x4A60,0x4B60,0x4C60,0x4D60,0x4E60,0x4F60,0x5040,0x5140,
|
|
0x5240,0x5340,0x5440,0x5540,0x5640,0x5740,0x5840,0x5940,
|
|
0x5A60,0x5B60,0x5C60,0x5D60,0x5E60,0x5F60,0x6040,0x6140,
|
|
0x6240,0x6340,0x6440,0x6540,0x6640,0x6740,0x6840,0x6940,
|
|
0x6A60,0x6B60,0x6C60,0x6D60,0x6E60,0x6F60,0x7040,0x7140,
|
|
0x7240,0x7340,0x7440,0x7540,0x7640,0x7740,0x7840,0x7940,
|
|
0x7A60,0x7B60,0x7C60,0x7D60,0x7E60,0x7F60,0x8040,0x8140,
|
|
0x8240,0x8340,0x8440,0x8540,0x8640,0x8740,0x8840,0x8940,
|
|
0x8A60,0x8B60,0x8C60,0x8D60,0x8E60,0x8F60,0x9040,0x9140,
|
|
0x9240,0x9340,0x3450,0x3550,0x3650,0x3750,0x3850,0x3950,
|
|
0x3A70,0x3B70,0x3C70,0x3D70,0x3E70,0x3F70,0x4050,0x4150,
|
|
0x4250,0x4350,0x4450,0x4550,0x4650,0x4750,0x4850,0x4950,
|
|
0x4A70,0x4B70,0x4C70,0x4D70,0x4E70,0x4F70,0x5050,0x5150,
|
|
0x5250,0x5350,0x5450,0x5550,0x5650,0x5750,0x5850,0x5950,
|
|
0x5A70,0x5B70,0x5C70,0x5D70,0x5E70,0x5F70,0x6050,0x6150,
|
|
0x6250,0x6350,0x6450,0x6550,0x6650,0x6750,0x6850,0x6950,
|
|
0x6A70,0x6B70,0x6C70,0x6D70,0x6E70,0x6F70,0x7050,0x7150,
|
|
0x7250,0x7350,0x7450,0x7550,0x7650,0x7750,0x7850,0x7950,
|
|
0x7A70,0x7B70,0x7C70,0x7D70,0x7E70,0x7F70,0x8050,0x8150,
|
|
0x8250,0x8350,0x8450,0x8550,0x8650,0x8750,0x8850,0x8950,
|
|
0x8A70,0x8B70,0x8C70,0x8D70,0x8E70,0x8F70,0x9050,0x9150,
|
|
0x9250,0x9350,0x9450,0x9550,0x9650,0x9750,0x9850,0x9950,
|
|
0x9A70,0x9B70,0x9C70,0x9D70,0x9E70,0x9F70,0xA050,0xA150,
|
|
0xA250,0xA350,0xA450,0xA550,0xA650,0xA750,0xA850,0xA950,
|
|
0xAA70,0xAB70,0xAC70,0xAD70,0xAE70,0xAF70,0xB050,0xB150,
|
|
0xB250,0xB350,0xB450,0xB550,0xB650,0xB750,0xB850,0xB950,
|
|
0xBA70,0xBB70,0xBC70,0xBD70,0xBE70,0xBF70,0xC050,0xC150,
|
|
0xC250,0xC350,0xC450,0xC550,0xC650,0xC750,0xC850,0xC950,
|
|
0xCA70,0xCB70,0xCC70,0xCD70,0xCE70,0xCF70,0xD050,0xD150,
|
|
0xD250,0xD350,0xD450,0xD550,0xD650,0xD750,0xD850,0xD950,
|
|
0xDA70,0xDB70,0xDC70,0xDD70,0xDE70,0xDF70,0xE050,0xE150,
|
|
0xE250,0xE350,0xE450,0xE550,0xE650,0xE750,0xE850,0xE950,
|
|
0xEA70,0xEB70,0xEC70,0xED70,0xEE70,0xEF70,0xF050,0xF150,
|
|
0xF250,0xF350,0xF450,0xF550,0xF650,0xF750,0xF850,0xF950,
|
|
0xFA70,0xFB70,0xFC70,0xFD70,0xFE70,0xFF70,0x00D0,0x0150,
|
|
0x0250,0x0350,0x0450,0x0550,0x0650,0x0750,0x0850,0x0950,
|
|
0x0A70,0x0B70,0x0C70,0x0D70,0x0E70,0x0F70,0x1050,0x1150,
|
|
0x1250,0x1350,0x1450,0x1550,0x1650,0x1750,0x1850,0x1950,
|
|
0x1A70,0x1B70,0x1C70,0x1D70,0x1E70,0x1F70,0x2050,0x2150,
|
|
0x2250,0x2350,0x2450,0x2550,0x2650,0x2750,0x2850,0x2950,
|
|
0x2A70,0x2B70,0x2C70,0x2D70,0x2E70,0x2F70,0x3050,0x3150,
|
|
0x3250,0x3350,0x3450,0x3550,0x3650,0x3750,0x3850,0x3950,
|
|
0x3A70,0x3B70,0x3C70,0x3D70,0x3E70,0x3F70,0x4050,0x4150,
|
|
0x4250,0x4350,0x4450,0x4550,0x4650,0x4750,0x4850,0x4950,
|
|
0x4A70,0x4B70,0x4C70,0x4D70,0x4E70,0x4F70,0x5050,0x5150,
|
|
0x5250,0x5350,0x5450,0x5550,0x5650,0x5750,0x5850,0x5950,
|
|
0x5A70,0x5B70,0x5C70,0x5D70,0x5E70,0x5F70,0x6050,0x6150,
|
|
0x6250,0x6350,0x6450,0x6550,0x6650,0x6750,0x6850,0x6950,
|
|
0x6A70,0x6B70,0x6C70,0x6D70,0x6E70,0x6F70,0x7050,0x7150,
|
|
0x7250,0x7350,0x7450,0x7550,0x7650,0x7750,0x7850,0x7950,
|
|
0x7A70,0x7B70,0x7C70,0x7D70,0x7E70,0x7F70,0x8050,0x8150,
|
|
0x8250,0x8350,0x8450,0x8550,0x8650,0x8750,0x8850,0x8950,
|
|
0x8A70,0x8B70,0x8C70,0x8D70,0x8E70,0x8F70,0x9050,0x9150,
|
|
0x9250,0x9350,0x9450,0x9550,0x9650,0x9750,0x9850,0x9950,
|
|
};
|
|
|
|
u8 ZeroTable[256] = {
|
|
0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0
|
|
};
|
|
|
|
#define GBSAVE_GAME_VERSION_1 1
|
|
#define GBSAVE_GAME_VERSION_2 2
|
|
#define GBSAVE_GAME_VERSION_3 3
|
|
#define GBSAVE_GAME_VERSION_4 4
|
|
#define GBSAVE_GAME_VERSION_5 5
|
|
#define GBSAVE_GAME_VERSION_6 6
|
|
#define GBSAVE_GAME_VERSION_7 7
|
|
#define GBSAVE_GAME_VERSION_8 8
|
|
#define GBSAVE_GAME_VERSION_9 9
|
|
#define GBSAVE_GAME_VERSION_10 10
|
|
#define GBSAVE_GAME_VERSION_11 11
|
|
#define GBSAVE_GAME_VERSION_12 12
|
|
#define GBSAVE_GAME_VERSION GBSAVE_GAME_VERSION_12
|
|
|
|
int inline gbGetValue(int min,int max,int v)
|
|
{
|
|
return (int)(min+(float)(max-min)*(2.0*(v/31.0)-(v/31.0)*(v/31.0)));
|
|
}
|
|
|
|
void gbGenFilter()
|
|
{
|
|
for (int r=0;r<32;r++) {
|
|
for (int g=0;g<32;g++) {
|
|
for (int b=0;b<32;b++) {
|
|
int nr=gbGetValue(gbGetValue(4,14,g),
|
|
gbGetValue(24,29,g),r)-4;
|
|
int ng=gbGetValue(gbGetValue(4+gbGetValue(0,5,r),
|
|
14+gbGetValue(0,3,r),b),
|
|
gbGetValue(24+gbGetValue(0,3,r),
|
|
29+gbGetValue(0,1,r),b),g)-4;
|
|
int nb=gbGetValue(gbGetValue(4+gbGetValue(0,5,r),
|
|
14+gbGetValue(0,3,r),g),
|
|
gbGetValue(24+gbGetValue(0,3,r),
|
|
29+gbGetValue(0,1,r),g),b)-4;
|
|
gbColorFilter[(b<<10)|(g<<5)|r]=(nb<<10)|(ng<<5)|nr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool gbIsGameboyRom(char * file)
|
|
{
|
|
if(strlen(file) > 4) {
|
|
char * p = strrchr(file,'.');
|
|
|
|
if(p != NULL) {
|
|
if(_stricmp(p, ".gb") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".gbc") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".cgb") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".sgb") == 0)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void gbCopyMemory(u16 d, u16 s, int count)
|
|
{
|
|
while(count) {
|
|
gbMemoryMap[d>>12][d & 0x0fff] = gbMemoryMap[s>>12][s & 0x0fff];
|
|
s++;
|
|
d++;
|
|
count--;
|
|
}
|
|
}
|
|
|
|
void gbDoHdma()
|
|
{
|
|
|
|
gbCopyMemory((gbHdmaDestination & 0x1ff0) | 0x8000,
|
|
gbHdmaSource & 0xfff0,
|
|
0x10);
|
|
|
|
gbHdmaDestination += 0x10;
|
|
if (gbHdmaDestination == 0xa000)
|
|
gbHdmaDestination = 0x8000;
|
|
|
|
gbHdmaSource += 0x10;
|
|
if (gbHdmaSource == 0x8000)
|
|
gbHdmaSource = 0xa000;
|
|
|
|
register_HDMA2 = gbHdmaSource & 0xff;
|
|
register_HDMA1 = gbHdmaSource>>8;
|
|
|
|
register_HDMA4 = gbHdmaDestination & 0xff;
|
|
register_HDMA3 = gbHdmaDestination>>8;
|
|
|
|
gbHdmaBytes -= 0x10;
|
|
gbMemory[0xff55] = --register_HDMA5;
|
|
if(register_HDMA5 == 0xff)
|
|
gbHdmaOn = 0;
|
|
|
|
// We need to add the dmaClockticks for HDMA !
|
|
if(gbSpeed)
|
|
gbDmaTicks = 17;
|
|
else
|
|
gbDmaTicks = 9;
|
|
|
|
if (IFF & 0x80)
|
|
gbDmaTicks++;
|
|
|
|
}
|
|
|
|
// fix for Harley and Lego Racers
|
|
void gbCompareLYToLYC()
|
|
{
|
|
if(register_LCDC & 0x80) {
|
|
if(register_LY == register_LYC) {
|
|
|
|
// mark that we have a match
|
|
register_STAT |= 4;
|
|
|
|
// check if we need an interrupt
|
|
if (register_STAT & 0x40)
|
|
{
|
|
// send LCD interrupt only if no interrupt 48h signal...
|
|
if (!gbInt48Signal)
|
|
{
|
|
register_IF |=2;
|
|
}
|
|
gbInt48Signal |= 8;
|
|
}
|
|
}
|
|
else // no match
|
|
{
|
|
register_STAT &= 0xfb;
|
|
gbInt48Signal &=~8;
|
|
}
|
|
}
|
|
}
|
|
|
|
void gbWriteMemory(register u16 address, register u8 value)
|
|
{
|
|
|
|
if(address < 0x8000) {
|
|
#ifndef FINAL_VERSION
|
|
if(memorydebug && (address>0x3fff || address < 0x2000)) {
|
|
log("Memory register write %04x=%02x PC=%04x\n",
|
|
address,
|
|
value,
|
|
PC.W);
|
|
}
|
|
|
|
#endif
|
|
if(mapper)
|
|
(*mapper)(address, value);
|
|
return;
|
|
|
|
}
|
|
|
|
if(address < 0xa000) {
|
|
// No access to Vram during mode 3
|
|
// (used to emulate the gfx differences between GB & GBC-GBA/SP in Stunt Racer)
|
|
if ((gbLcdModeDelayed !=3) ||
|
|
// This part is used to emulate a small difference between hardwares
|
|
// (check 8-in-1's arrow on GBA/GBC to verify it)
|
|
((register_LY == 0) && ((gbHardware & 0xa) && (gbScreenOn==false) &&
|
|
(register_LCDC & 0x80)) &&
|
|
(gbLcdLYIncrementTicksDelayed ==(GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS))))
|
|
gbMemoryMap[address>>12][address&0x0fff] = value;
|
|
return;
|
|
}
|
|
|
|
// Used for the mirroring of 0xC000 in 0xE000
|
|
if ((address >= 0xe000) && (address < 0xfe00))
|
|
address &= ~0x2000;
|
|
|
|
if(address < 0xc000) {
|
|
#ifndef FINAL_VERSION
|
|
if(memorydebug) {
|
|
log("Memory register write %04x=%02x PC=%04x\n",
|
|
address,
|
|
value,
|
|
PC.W);
|
|
}
|
|
#endif
|
|
|
|
// Is that a correct fix ??? (it used to be 'if (mapper)')...
|
|
if(mapperRAM)
|
|
(*mapperRAM)(address, value);
|
|
return;
|
|
}
|
|
|
|
|
|
if(address < 0xfe00) {
|
|
gbMemoryMap[address>>12][address & 0x0fff] = value;
|
|
return;
|
|
}
|
|
|
|
// OAM not accessible during mode 2 & 3.
|
|
if(address < 0xfea0)
|
|
{
|
|
if (((gbHardware & 0xa) && ((gbLcdMode | gbLcdModeDelayed) &2)) ||
|
|
((gbHardware & 5) && (((gbLcdModeDelayed == 2) &&
|
|
(gbLcdTicksDelayed<=GBLCD_MODE_2_CLOCK_TICKS)) ||
|
|
(gbLcdModeDelayed == 3))))
|
|
return;
|
|
else
|
|
{
|
|
gbMemory[address] = value;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
if((address > 0xfea0) && (address < 0xff00)){ // GBC allows reading/writing to that area
|
|
gbMemory[address] = value;
|
|
return;
|
|
}
|
|
|
|
switch(address & 0x00ff) {
|
|
|
|
case 0x00: {
|
|
gbMemory[0xff00] = ((gbMemory[0xff00] & 0xcf) |
|
|
(value & 0x30) | 0xc0);
|
|
if(gbSgbMode) {
|
|
gbSgbDoBitTransfer(value);
|
|
}
|
|
return;
|
|
}
|
|
|
|
case 0x01: {
|
|
gbMemory[0xff01] = value;
|
|
return;
|
|
}
|
|
|
|
// serial control
|
|
case 0x02: {
|
|
gbSerialOn = (value & 0x80);
|
|
gbMemory[0xff02] = value;
|
|
if(gbSerialOn) {
|
|
gbSerialTicks = GBSERIAL_CLOCK_TICKS;
|
|
#ifdef LINK_EMULATION
|
|
if(linkConnected) {
|
|
if(value & 1) {
|
|
linkSendByte(0x100|gbMemory[0xFF01]);
|
|
Sleep(5);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
gbSerialBits = 0;
|
|
return;
|
|
}
|
|
|
|
case 0x04: {
|
|
// DIV register resets on any write
|
|
// (not totally perfect, but better than nothing)
|
|
gbMemory[0xff04] = register_DIV = 0;
|
|
gbDivTicks = GBDIV_CLOCK_TICKS;
|
|
// Another weird timer 'bug' :
|
|
// Writing to DIV register resets the internal timer,
|
|
// and can also increase TIMA/trigger an interrupt
|
|
// in some cases...
|
|
if (gbTimerOn && !(gbInternalTimer & (gbTimerClockTicks>>1)))
|
|
{
|
|
gbMemory[0xff05] = ++register_TIMA;
|
|
if(register_TIMA == 0) {
|
|
// timer overflow!
|
|
|
|
// reload timer modulo
|
|
gbMemory[0xff05] = register_TIMA = register_TMA;
|
|
|
|
// flag interrupt
|
|
gbMemory[0xff0f] = register_IF |= 4;
|
|
}
|
|
}
|
|
gbInternalTimer = 0xff;
|
|
return;
|
|
}
|
|
case 0x05:
|
|
gbMemory[0xff05] = register_TIMA = value;
|
|
return;
|
|
|
|
case 0x06:
|
|
gbMemory[0xff06] = register_TMA = value;
|
|
return;
|
|
|
|
// TIMER control
|
|
case 0x07: {
|
|
|
|
gbTimerModeChange = (((value & 3) != (register_TAC&3)) && (value & register_TAC & 4)) ? true : false;
|
|
gbTimerOnChange = (((value ^ register_TAC) & 4) == 4) ? true : false;
|
|
|
|
gbTimerOn = (value & 4) ? true : false;
|
|
|
|
if (gbTimerOnChange || gbTimerModeChange)
|
|
{
|
|
gbTimerMode = value & 3;
|
|
|
|
switch(gbTimerMode) {
|
|
case 0:
|
|
gbTimerClockTicks = GBTIMER_MODE_0_CLOCK_TICKS;
|
|
break;
|
|
case 1:
|
|
gbTimerClockTicks = GBTIMER_MODE_1_CLOCK_TICKS;
|
|
break;
|
|
case 2:
|
|
gbTimerClockTicks = GBTIMER_MODE_2_CLOCK_TICKS;
|
|
break;
|
|
case 3:
|
|
gbTimerClockTicks = GBTIMER_MODE_3_CLOCK_TICKS;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
// This looks weird, but this emulates a bug in which register_TIMA
|
|
// is increased when writing to register_TAC
|
|
// (This fixes Korodice's long-delay between menus bug).
|
|
|
|
if (gbTimerOnChange || gbTimerModeChange)
|
|
{
|
|
bool temp = false;
|
|
|
|
if ((gbTimerOn && !gbTimerModeChange) && (gbTimerMode & 2) &&
|
|
!(gbInternalTimer & 0x80) && (gbInternalTimer & (gbTimerClockTicks>>1)) &&
|
|
!(gbInternalTimer & (gbTimerClockTicks>>5)))
|
|
temp = true;
|
|
else if ((!gbTimerOn && !gbTimerModeChange && gbTimerOnChange ) && ((gbTimerTicks-1) < (gbTimerClockTicks>>1)))
|
|
temp = true;
|
|
else if (gbTimerOn && gbTimerModeChange && !gbTimerOnChange)
|
|
{
|
|
switch(gbTimerMode & 3)
|
|
{
|
|
case 0x00:
|
|
temp = false;
|
|
break;
|
|
case 0x01:
|
|
if (((gbInternalTimer & 0x82) == 2) && (gbTimerTicks>(clockTicks+1)))
|
|
temp = true;
|
|
break;
|
|
case 0x02:
|
|
if (((gbInternalTimer & 0x88) == 0x8) && (gbTimerTicks>(clockTicks+1)))
|
|
temp = true;
|
|
break;
|
|
case 0x03:
|
|
if (((gbInternalTimer & 0xA0) == 0x20) && (gbTimerTicks>(clockTicks+1)))
|
|
temp = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (temp)
|
|
{
|
|
gbMemory[0xff05] = ++register_TIMA;
|
|
if((register_TIMA & 0xff) == 0) {
|
|
// timer overflow!
|
|
|
|
// reload timer modulo
|
|
gbMemory[0xff05] = register_TIMA = register_TMA;
|
|
|
|
// flag interrupt
|
|
gbMemory[0xff0f] = register_IF |= 4;
|
|
}
|
|
}
|
|
}
|
|
gbMemory[0xff07] = register_TAC = value;
|
|
return;
|
|
}
|
|
|
|
case 0x0f: {
|
|
gbMemory[0xff0f] = register_IF = value;
|
|
//gbMemory[0xff0f] = register_IE |= value;
|
|
return;
|
|
}
|
|
|
|
case 0x10:
|
|
case 0x11:
|
|
case 0x12:
|
|
case 0x13:
|
|
case 0x14:
|
|
case 0x16:
|
|
case 0x17:
|
|
case 0x18:
|
|
case 0x19:
|
|
case 0x1a:
|
|
case 0x1b:
|
|
case 0x1c:
|
|
case 0x1d:
|
|
case 0x1e:
|
|
case 0x20:
|
|
case 0x21:
|
|
case 0x22:
|
|
case 0x23:
|
|
case 0x24:
|
|
case 0x25: {
|
|
if (gbMemory[NR52] & 0x80) {
|
|
SOUND_EVENT(address,value);
|
|
return;
|
|
}
|
|
}
|
|
|
|
case 0x26: {
|
|
SOUND_EVENT(address,value);
|
|
return;
|
|
}
|
|
|
|
case 0x30:
|
|
case 0x31:
|
|
case 0x32:
|
|
case 0x33:
|
|
case 0x34:
|
|
case 0x35:
|
|
case 0x36:
|
|
case 0x37:
|
|
case 0x38:
|
|
case 0x39:
|
|
case 0x3a:
|
|
case 0x3b:
|
|
case 0x3c:
|
|
case 0x3d:
|
|
case 0x3e:
|
|
case 0x3f: {
|
|
SOUND_EVENT(address,value);
|
|
//gbMemory[address] = value;
|
|
return;
|
|
}
|
|
|
|
case 0x40: {
|
|
int lcdChange = (register_LCDC & 0x80) ^ (value & 0x80);
|
|
|
|
// don't draw the window if it was not enabled and not being drawn before
|
|
if(!(register_LCDC & 0x20) && (value & 0x20) && gbWindowLine == -1 &&
|
|
register_LY > register_WY)
|
|
gbWindowLine = 146;
|
|
// 007 fix : don't draw the first window's 1st line if it's enable 'too late'
|
|
// (ie. if register_LY == register_WY when enabling it)
|
|
// and move it to the next line
|
|
else if (!(register_LCDC & 0x20) && (value & 0x20) && (register_LY == register_WY))
|
|
gbWindowLine = -2;
|
|
|
|
|
|
gbMemory[0xff40] = register_LCDC = value;
|
|
|
|
|
|
if(lcdChange) {
|
|
if((value & 0x80) && (!register_LCDCBusy)) {
|
|
|
|
// if (!gbWhiteScreen && !gbSgbMask)
|
|
|
|
// systemDrawScreen();
|
|
|
|
|
|
|
|
gbRegisterLYLCDCOffOn = (register_LY + 144) % 154;
|
|
|
|
gbLcdTicks = GBLCD_MODE_2_CLOCK_TICKS - (gbSpeed ? 2 : 1);
|
|
gbLcdTicksDelayed = GBLCD_MODE_2_CLOCK_TICKS - (gbSpeed ? 1 : 0);
|
|
gbLcdLYIncrementTicks = GBLY_INCREMENT_CLOCK_TICKS - (gbSpeed ? 2 : 1);
|
|
gbLcdLYIncrementTicksDelayed = GBLY_INCREMENT_CLOCK_TICKS - (gbSpeed ? 1 : 0);
|
|
gbLcdMode = 2;
|
|
gbLcdModeDelayed = 2;
|
|
gbMemory[0xff41] = register_STAT = (register_STAT & 0xfc) | 2;
|
|
gbMemory[0xff44] = register_LY = 0x00;
|
|
gbInt48Signal = 0;
|
|
gbLYChangeHappened = false;
|
|
gbLCDChangeHappened = false;
|
|
gbWindowLine = 146;
|
|
oldRegister_WY = 146;
|
|
|
|
// Fix for Namco Gallery Vol.2
|
|
// (along with updating register_LCDC at the start of 'case 0x40') :
|
|
if(register_STAT & 0x20)
|
|
{
|
|
// send LCD interrupt only if no interrupt 48h signal...
|
|
if (!gbInt48Signal)
|
|
{
|
|
gbMemory[0xff0f] = register_IF |= 2;
|
|
}
|
|
gbInt48Signal |= 4;
|
|
}
|
|
gbCompareLYToLYC();
|
|
|
|
} else {
|
|
|
|
register_LCDCBusy = clockTicks+6;
|
|
|
|
//used to update the screen with white lines when it's off.
|
|
//(it looks strange, but it's pretty accurate)
|
|
|
|
gbWhiteScreen = 0;
|
|
|
|
gbScreenTicks = ((150-register_LY)*GBLY_INCREMENT_CLOCK_TICKS +
|
|
(49<<(gbSpeed ? 1 : 0)));
|
|
|
|
// disable the screen rendering
|
|
gbScreenOn = false;
|
|
gbLcdTicks = 0;
|
|
gbLcdMode = 0;
|
|
gbLcdModeDelayed = 0;
|
|
gbMemory[0xff41] = register_STAT &= 0xfc;
|
|
gbInt48Signal = 0;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// STAT
|
|
case 0x41: {
|
|
//register_STAT = (register_STAT & 0x87) |
|
|
// (value & 0x7c);
|
|
gbMemory[0xff41] = register_STAT = (value & 0xf8) | (register_STAT & 0x07); // fix ?
|
|
// GB bug from Devrs FAQ
|
|
// proper fix
|
|
gbInt48Signal &= ((register_STAT>>3) & 0xF);
|
|
|
|
if((register_LCDC & 0x80)) {
|
|
if ((register_STAT & 0x08) && (gbLcdMode == 0))
|
|
{
|
|
if (!gbInt48Signal)
|
|
{
|
|
gbMemory[0xff0f] = register_IF |=2;
|
|
}
|
|
gbInt48Signal |= 1;
|
|
}
|
|
if ((register_STAT & 0x10) && (gbLcdMode == 1))
|
|
{
|
|
if (!gbInt48Signal)
|
|
{
|
|
gbMemory[0xff0f] = register_IF |=2;
|
|
}
|
|
gbInt48Signal |= 2;
|
|
}
|
|
if ((register_STAT & 0x20) && (gbLcdMode == 2))
|
|
{
|
|
if (!gbInt48Signal)
|
|
{
|
|
gbMemory[0xff0f] = register_IF |=2;
|
|
}
|
|
gbInt48Signal |= 4;
|
|
}
|
|
gbCompareLYToLYC();
|
|
|
|
gbMemory[0xff0f] = register_IF;
|
|
gbMemory[0xff41] = register_STAT;
|
|
|
|
}
|
|
return;
|
|
}
|
|
|
|
// SCY
|
|
case 0x42: {
|
|
int temp = -1;
|
|
|
|
if ((gbLcdMode == 3) || (gbLcdModeDelayed == 3))
|
|
temp = ((GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS) -
|
|
gbLcdLYIncrementTicks);
|
|
|
|
if (temp >=0)
|
|
{
|
|
for (int i=temp<<(gbSpeed ? 1 : 2);i<300;i++)
|
|
if (temp < 300)
|
|
gbSCYLine[i] = value;
|
|
}
|
|
|
|
else
|
|
memset(gbSCYLine, value, sizeof(gbSCYLine));
|
|
|
|
gbMemory[0xff42] = register_SCY = value;
|
|
return;
|
|
}
|
|
|
|
// SCX
|
|
case 0x43: {
|
|
int temp = -1;
|
|
|
|
if (gbLcdModeDelayed == 3)
|
|
temp = ((GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS) -
|
|
gbLcdLYIncrementTicksDelayed);
|
|
|
|
if (temp >=0)
|
|
{
|
|
for (int i=temp<<(gbSpeed ? 1 : 2);i<300;i++)
|
|
if (temp < 300)
|
|
gbSCXLine[i] = value;
|
|
}
|
|
|
|
else
|
|
memset(gbSCXLine, value, sizeof(gbSCXLine));
|
|
|
|
gbMemory[0xff43] = register_SCX = value;
|
|
return;
|
|
}
|
|
|
|
// LY
|
|
case 0x44: {
|
|
// read only
|
|
return;
|
|
}
|
|
|
|
// LYC
|
|
case 0x45: {
|
|
if (register_LYC != value)
|
|
{
|
|
gbMemory[0xff45] = register_LYC = value;
|
|
if(register_LCDC & 0x80) {
|
|
gbCompareLYToLYC();
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// DMA!
|
|
case 0x46: {
|
|
int source = value * 0x0100;
|
|
|
|
gbCopyMemory(0xfe00,
|
|
source,
|
|
0xa0);
|
|
gbMemory[0xff46] = register_DMA = value;
|
|
return;
|
|
}
|
|
|
|
// BGP
|
|
case 0x47: {
|
|
|
|
int temp = -1;
|
|
|
|
gbMemory[0xff47] = value;
|
|
|
|
if (gbLcdModeDelayed == 3)
|
|
temp = ((GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS) -
|
|
gbLcdLYIncrementTicksDelayed);
|
|
|
|
if (temp >=0)
|
|
{
|
|
for (int i=temp<<(gbSpeed ? 1 : 2);i<300;i++)
|
|
if (temp < 300)
|
|
gbBgpLine[i] = value;
|
|
}
|
|
else
|
|
memset(gbBgpLine,value,sizeof(gbBgpLine));
|
|
|
|
gbSetBGPalette(value);
|
|
break;
|
|
}
|
|
|
|
// OBP0
|
|
case 0x48: {
|
|
int temp = -1;
|
|
|
|
gbMemory[0xff48] = value;
|
|
|
|
if (gbLcdModeDelayed == 3)
|
|
temp = ((GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS) -
|
|
gbLcdLYIncrementTicksDelayed);
|
|
|
|
if (temp >=0)
|
|
{
|
|
for (int i=temp<<(gbSpeed ? 1 : 2);i<300;i++)
|
|
if (temp < 300)
|
|
gbObp0Line[i] = value;
|
|
}
|
|
else
|
|
memset(gbObp0Line,value,sizeof(gbObp0Line));
|
|
|
|
gbSetObj0Palette(value);
|
|
break;
|
|
}
|
|
|
|
// OBP1
|
|
case 0x49: {
|
|
int temp = -1;
|
|
|
|
gbMemory[0xff49] = value;
|
|
|
|
if (gbLcdModeDelayed == 3)
|
|
temp = ((GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS) -
|
|
gbLcdLYIncrementTicksDelayed);
|
|
|
|
if (temp >=0)
|
|
{
|
|
for (int i=temp<<(gbSpeed ? 1 : 2);i<300;i++)
|
|
if (temp < 300)
|
|
gbObp1Line[i] = value;
|
|
}
|
|
else
|
|
memset(gbObp1Line,value,sizeof(gbObp1Line));
|
|
|
|
gbSetObj1Palette(value);
|
|
break;
|
|
}
|
|
|
|
// WY
|
|
case 0x4a:
|
|
gbMemory[0xff4a] = register_WY = value;
|
|
if ((register_LY <= register_WY) && ((gbWindowLine < 0) || (gbWindowLine>=144)))
|
|
{
|
|
gbWindowLine = -1;
|
|
oldRegister_WY = register_WY;
|
|
}
|
|
return;
|
|
|
|
// WX
|
|
case 0x4b:
|
|
gbMemory[0xff4b] = register_WX = value;
|
|
return;
|
|
|
|
// KEY1
|
|
case 0x4d: {
|
|
if(gbCgbMode) {
|
|
gbMemory[0xff4d] = (gbMemory[0xff4d] & 0x80) | (value & 1) | 0x7e;
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// VBK
|
|
case 0x4f: {
|
|
if(gbCgbMode) {
|
|
value = value & 1;
|
|
if(value == gbVramBank)
|
|
return;
|
|
|
|
int vramAddress = value * 0x2000;
|
|
gbMemoryMap[0x08] = &gbVram[vramAddress];
|
|
gbMemoryMap[0x09] = &gbVram[vramAddress + 0x1000];
|
|
|
|
gbVramBank = value;
|
|
register_VBK = value;
|
|
}
|
|
return;
|
|
}
|
|
break;
|
|
|
|
// BOOTROM disable register (also gbCgbMode enabler if value & 0x10 ?)
|
|
case 0x50 :
|
|
{
|
|
if (useBios && inBios && !skipBios && (value & 1))
|
|
{
|
|
gbMemoryMap[0x00] = &gbRom[0x0000];
|
|
memcpy ((u8 *)(gbRom+0x100), (u8 *)(gbMemory + 0x100), 0xF00);
|
|
inBios = false;
|
|
}
|
|
}
|
|
|
|
// HDMA1
|
|
case 0x51: {
|
|
if(gbCgbMode) {
|
|
if(value > 0x7f && value < 0xa0)
|
|
value = 0;
|
|
|
|
gbHdmaSource = (value << 8) | (gbHdmaSource & 0xf0);
|
|
|
|
register_HDMA1 = value;
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// HDMA2
|
|
case 0x52: {
|
|
if(gbCgbMode) {
|
|
value = value & 0xf0;
|
|
|
|
gbHdmaSource = (gbHdmaSource & 0xff00) | (value);
|
|
|
|
register_HDMA2 = value;
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// HDMA3
|
|
case 0x53: {
|
|
if(gbCgbMode) {
|
|
value = value & 0x1f;
|
|
gbHdmaDestination = (value << 8) | (gbHdmaDestination & 0xf0);
|
|
gbHdmaDestination |= 0x8000;
|
|
register_HDMA3 = value;
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// HDMA4
|
|
case 0x54: {
|
|
if(gbCgbMode) {
|
|
value = value & 0xf0;
|
|
gbHdmaDestination = (gbHdmaDestination & 0x1f00) | value;
|
|
gbHdmaDestination |= 0x8000;
|
|
register_HDMA4 = value;
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// HDMA5
|
|
case 0x55: {
|
|
|
|
if(gbCgbMode) {
|
|
gbHdmaBytes = 16 + (value & 0x7f) * 16;
|
|
if(gbHdmaOn) {
|
|
if(value & 0x80) {
|
|
gbMemory[0xff55] = register_HDMA5 = (value & 0x7f);
|
|
} else {
|
|
register_HDMA5 = 0xff;
|
|
gbHdmaOn = 0;
|
|
}
|
|
} else {
|
|
if(value & 0x80) {
|
|
gbHdmaOn = 1;
|
|
gbMemory[0xff55] = register_HDMA5 = value & 0x7f;
|
|
if(gbLcdModeDelayed == 0)
|
|
gbDoHdma();
|
|
} else {
|
|
// we need to take the time it takes to complete the transfer into
|
|
// account... according to GB DEV FAQs, the setup time is the same
|
|
// for single and double speed, but the actual transfer takes the
|
|
// same time
|
|
if(gbSpeed)
|
|
gbDmaTicks = 2+16 * ((value & 0x7f) +1);
|
|
else
|
|
gbDmaTicks = 1+8 * ((value & 0x7f)+1);
|
|
|
|
gbCopyMemory((gbHdmaDestination & 0x1ff0) | 0x8000,
|
|
gbHdmaSource & 0xfff0,
|
|
gbHdmaBytes);
|
|
gbHdmaDestination += gbHdmaBytes;
|
|
gbHdmaSource += gbHdmaBytes;
|
|
|
|
gbMemory[0xff51] = register_HDMA1 = 0xff;// = (gbHdmaSource >> 8) & 0xff;
|
|
gbMemory[0xff52] = register_HDMA2 = 0xff;// = gbHdmaSource & 0xf0;
|
|
gbMemory[0xff53] = register_HDMA3 = 0xff;// = ((gbHdmaDestination - 0x8000) >> 8) & 0x1f;
|
|
gbMemory[0xff54] = register_HDMA4 = 0xff;// = gbHdmaDestination & 0xf0;
|
|
gbMemory[0xff55] = register_HDMA5 = 0xff;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// BCPS
|
|
case 0x68: {
|
|
if(gbCgbMode) {
|
|
int paletteIndex = (value & 0x3f) >> 1;
|
|
int paletteHiLo = (value & 0x01);
|
|
|
|
gbMemory[0xff68] = value;
|
|
|
|
gbMemory[0xff69] = (paletteHiLo ?
|
|
(gbPalette[paletteIndex] >> 8) :
|
|
(gbPalette[paletteIndex] & 0x00ff));
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// BCPD
|
|
case 0x69: {
|
|
if(gbCgbMode) {
|
|
int v = gbMemory[0xff68];
|
|
int paletteIndex = (v & 0x3f) >> 1;
|
|
int paletteHiLo = (v & 0x01);
|
|
|
|
// No access to gbPalette during mode 3 (Color Panel Demo)
|
|
// CAK - The following check has to be commented out for
|
|
// colourised roms like Metroid 2 DX
|
|
//if (((gbLcdModeDelayed != 3) && (!((gbLcdMode == 0) && (gbLcdTicks>=(GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299]-1)))) && (!gbSpeed)) ||
|
|
// (gbSpeed && ((gbLcdMode == 1) || (gbLcdMode == 2) ||
|
|
// ((gbLcdMode == 3) && (gbLcdTicks>(GBLCD_MODE_3_CLOCK_TICKS-2))) ||
|
|
// ((gbLcdMode == 0) && (gbLcdTicks<=(GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299]-2))))))
|
|
{
|
|
gbMemory[0xff69] = value;
|
|
gbPalette[paletteIndex] = (paletteHiLo ?
|
|
((value << 8) | (gbPalette[paletteIndex] & 0xff)) :
|
|
((gbPalette[paletteIndex] & 0xff00) | (value))) & 0x7fff;
|
|
}
|
|
|
|
|
|
if(gbMemory[0xff68] & 0x80) {
|
|
int index = ((gbMemory[0xff68] & 0x3f) + 1) & 0x3f;
|
|
|
|
gbMemory[0xff68] = (gbMemory[0xff68] & 0x80) | index;
|
|
gbMemory[0xff69] = (index & 1 ?
|
|
(gbPalette[index>>1] >> 8) :
|
|
(gbPalette[index>>1] & 0x00ff));
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// OCPS
|
|
case 0x6a: {
|
|
if(gbCgbMode) {
|
|
int paletteIndex = (value & 0x3f) >> 1;
|
|
int paletteHiLo = (value & 0x01);
|
|
|
|
paletteIndex += 32;
|
|
|
|
gbMemory[0xff6a] = value;
|
|
|
|
gbMemory[0xff6b] = (paletteHiLo ?
|
|
(gbPalette[paletteIndex] >> 8) :
|
|
(gbPalette[paletteIndex] & 0x00ff));
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// OCPD
|
|
case 0x6b: {
|
|
|
|
if(gbCgbMode) {
|
|
int v = gbMemory[0xff6a];
|
|
int paletteIndex = (v & 0x3f) >> 1;
|
|
int paletteHiLo = (v & 0x01);
|
|
|
|
paletteIndex += 32;
|
|
|
|
// No access to gbPalette during mode 3 (Color Panel Demo)
|
|
// CAK - The following check has to be commented out for
|
|
// colourised roms like Metroid 2 DX
|
|
//if (((gbLcdModeDelayed != 3) && (!((gbLcdMode == 0) && (gbLcdTicks>=(GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299]-1)))) && (!gbSpeed)) ||
|
|
// (gbSpeed && ((gbLcdMode == 1) || (gbLcdMode == 2) ||
|
|
// ((gbLcdMode == 3) && (gbLcdTicks>(GBLCD_MODE_3_CLOCK_TICKS-2))) ||
|
|
// ((gbLcdMode == 0) && (gbLcdTicks<=(GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299]-2))))))
|
|
{
|
|
gbMemory[0xff6b] = value;
|
|
gbPalette[paletteIndex] = (paletteHiLo ?
|
|
((value << 8) | (gbPalette[paletteIndex] & 0xff)) :
|
|
((gbPalette[paletteIndex] & 0xff00) | (value))) & 0x7fff;
|
|
}
|
|
|
|
if(gbMemory[0xff6a] & 0x80) {
|
|
int index = ((gbMemory[0xff6a] & 0x3f) + 1) & 0x3f;
|
|
|
|
gbMemory[0xff6a] = (gbMemory[0xff6a] & 0x80) | index;
|
|
|
|
gbMemory[0xff6b] = (index & 1 ?
|
|
(gbPalette[(index>>1) + 32] >> 8) :
|
|
(gbPalette[(index>>1) + 32] & 0x00ff));
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0x6c: {
|
|
gbMemory[0xff6c] = 0xfe | value;
|
|
return;
|
|
}
|
|
|
|
|
|
// SVBK
|
|
case 0x70: {
|
|
if(gbCgbMode) {
|
|
value = value & 7;
|
|
|
|
int bank = value;
|
|
if(value == 0)
|
|
bank = 1;
|
|
|
|
if(bank == gbWramBank)
|
|
return;
|
|
|
|
int wramAddress = bank * 0x1000;
|
|
gbMemoryMap[0x0d] = &gbWram[wramAddress];
|
|
|
|
gbWramBank = bank;
|
|
gbMemory[0xff70] = register_SVBK = value;
|
|
return;
|
|
}
|
|
}
|
|
|
|
case 0x75:{
|
|
gbMemory[0xff75] = 0x8f | value;
|
|
return;
|
|
}
|
|
|
|
case 0xff: {
|
|
gbMemory[0xffff] = register_IE = value;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if(address < 0xff80)
|
|
{
|
|
gbMemory[address] = value;
|
|
return;
|
|
}
|
|
|
|
gbMemory[address] = value;
|
|
}
|
|
|
|
u8 gbReadOpcode(register u16 address)
|
|
{
|
|
if(gbCheatMap[address])
|
|
return gbCheatRead(address);
|
|
|
|
if(address < 0x8000)
|
|
return gbMemoryMap[address>>12][address&0x0fff];
|
|
|
|
if(address < 0xa000)
|
|
{
|
|
// A lot of 'ugly' checks... But only way to emulate this particular behaviour...
|
|
if (((gbHardware & 0xa) && ((gbLcdModeDelayed !=3) || ((register_LY == 0) &&
|
|
(gbScreenOn==false) && (register_LCDC & 0x80)) &&
|
|
(gbLcdLYIncrementTicksDelayed ==(GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS)))) ||
|
|
((gbHardware & 0x5) && (gbLcdModeDelayed !=3) &&
|
|
((gbLcdMode !=3) || ((register_LY == 0) && ((gbScreenOn==false) &&
|
|
(register_LCDC & 0x80)) &&
|
|
(gbLcdLYIncrementTicks ==(GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS))))))
|
|
return gbMemoryMap[address>>12][address&0x0fff];
|
|
return 0xff;
|
|
}
|
|
|
|
// Used for the mirroring of 0xC000 in 0xE000
|
|
if ((address >= 0xe000) && (address < 0xfe00))
|
|
address &= ~0x2000;
|
|
|
|
switch(address & 0xf000) {
|
|
case 0x0a:
|
|
case 0x0b:
|
|
if(mapperReadRAM)
|
|
return mapperReadRAM(address);
|
|
break;
|
|
case 0x0f:
|
|
if(address > 0xff00) {
|
|
switch(address & 0x00ff) {
|
|
case 0x02:
|
|
return (gbMemory[0xff02]);
|
|
case 0x03:
|
|
return (0xff);
|
|
case 0x04:
|
|
return register_DIV;
|
|
case 0x05:
|
|
return register_TIMA;
|
|
case 0x06:
|
|
return register_TMA;
|
|
case 0x07:
|
|
return (0xf8 | register_TAC);
|
|
case 0x08:
|
|
case 0x09:
|
|
case 0x0a:
|
|
case 0x0b:
|
|
case 0x0c:
|
|
case 0x0d:
|
|
case 0x0e:
|
|
return (0xff);
|
|
case 0x0f:
|
|
return (0xe0 | gbMemory[0xff0f]);
|
|
case 0x40:
|
|
return register_LCDC;
|
|
case 0x41:
|
|
// This is a GB/C only bug (ie. not GBA/SP).
|
|
if ((gbHardware & 7) && (gbLcdMode == 2) && (gbLcdModeDelayed == 1) && (!gbSpeed))
|
|
return (0x80 | gbMemory[0xff41] & 0xFC);
|
|
else
|
|
return (0x80 | gbMemory[0xff41]);
|
|
case 0x42:
|
|
return register_SCY;
|
|
case 0x43:
|
|
return register_SCX;
|
|
case 0x44:
|
|
if (((gbHardware & 7) && ((gbLcdMode == 1) && (gbLcdTicks == 0x71))) ||
|
|
(!(register_LCDC && 0x80)))
|
|
return 0;
|
|
else
|
|
return register_LY;
|
|
case 0x45:
|
|
return register_LYC;
|
|
case 0x46:
|
|
return register_DMA;
|
|
case 0x4a:
|
|
return register_WY;
|
|
case 0x4b:
|
|
return register_WX;
|
|
case 0x4c:
|
|
return 0xff;
|
|
case 0x4f:
|
|
return (0xfe | register_VBK);
|
|
case 0x51:
|
|
return register_HDMA1;
|
|
case 0x52:
|
|
return register_HDMA2;
|
|
case 0x53:
|
|
return register_HDMA3;
|
|
case 0x54:
|
|
return register_HDMA4;
|
|
case 0x55:
|
|
return register_HDMA5;
|
|
case 0x68:
|
|
case 0x6a:
|
|
if (gbCgbMode)
|
|
return (0x40 | gbMemory[address]);
|
|
else
|
|
return 0xc0;
|
|
case 0x69:
|
|
case 0x6b:
|
|
if (gbCgbMode)
|
|
{
|
|
// No access to gbPalette during mode 3 (Color Panel Demo)
|
|
//if (((gbLcdModeDelayed != 3) && (!((gbLcdMode == 0) && (gbLcdTicks>=(GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299]-1)))) && (!gbSpeed)) ||
|
|
// (gbSpeed && ((gbLcdMode == 1) || (gbLcdMode == 2) ||
|
|
// ((gbLcdMode == 3) && (gbLcdTicks>(GBLCD_MODE_3_CLOCK_TICKS-2))) ||
|
|
// ((gbLcdMode == 0) && (gbLcdTicks<=(GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299]-2))))))
|
|
return (gbMemory[address]);
|
|
//else
|
|
// return 0xff;
|
|
}
|
|
else
|
|
return 0xff;
|
|
case 0x70:
|
|
if (gbCgbMode)
|
|
return (0xf8 | register_SVBK);
|
|
else
|
|
return 0xff;
|
|
case 0xff:
|
|
return register_IE;
|
|
}
|
|
}
|
|
// OAM not accessible during mode 2 & 3.
|
|
if(((address >= 0xfe00) && (address<0xfea0)) &&
|
|
((gbLcdMode | gbLcdModeDelayed) &2))
|
|
return 0xff;
|
|
break;
|
|
}
|
|
|
|
if ((address >= 0xfea0) && (address < 0xff00))
|
|
{
|
|
if (gbHardware & 1)
|
|
return ((((address + ((address >> 4) - 0xfea)) >> 2) & 1) ? 0x00 : 0xff );
|
|
else if (gbHardware & 2)
|
|
return gbMemoryMap[address>>12][address & 0x0fff];
|
|
else if (gbHardware & 4)
|
|
return ((((address + ((address >> 4) - 0xfea)) >> 2) & 1) ? 0xff : 0x00 );
|
|
else if (gbHardware & 8)
|
|
return ((address & 0xf0) |((address & 0xf0)>>4));
|
|
}
|
|
|
|
return gbMemoryMap[address>>12][address & 0x0fff];
|
|
}
|
|
|
|
u8 gbReadMemory(register u16 address)
|
|
{
|
|
if(gbCheatMap[address])
|
|
return gbCheatRead(address);
|
|
|
|
|
|
if(address < 0x8000)
|
|
return gbMemoryMap[address>>12][address&0x0fff];
|
|
|
|
if(address < 0xa000)
|
|
{
|
|
// A lot of 'ugly' checks... But only way to emulate this particular behaviour...
|
|
if (((gbHardware & 0xa) && ((gbLcdModeDelayed !=3) || ((register_LY == 0) &&
|
|
(gbScreenOn==false) && (register_LCDC & 0x80)) &&
|
|
(gbLcdLYIncrementTicksDelayed ==(GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS)))) ||
|
|
((gbHardware & 0x5) && (gbLcdModeDelayed !=3) &&
|
|
((gbLcdMode !=3) || ((register_LY == 0) && ((gbScreenOn==false) &&
|
|
(register_LCDC & 0x80)) &&
|
|
(gbLcdLYIncrementTicks ==(GBLY_INCREMENT_CLOCK_TICKS-GBLCD_MODE_2_CLOCK_TICKS))))))
|
|
return gbMemoryMap[address>>12][address&0x0fff];
|
|
return 0xff;
|
|
}
|
|
|
|
if ((address >= 0xe000) && (address < 0xfe00))
|
|
address &= ~0x2000;
|
|
|
|
if(address < 0xc000) {
|
|
#ifndef FINAL_VERSION
|
|
if(memorydebug) {
|
|
log("Memory register read %04x PC=%04x\n",
|
|
address,
|
|
PC.W);
|
|
}
|
|
#endif
|
|
|
|
// for the 2kb ram limit (fixes crash in shawu's story
|
|
// but now its sram test fails, as the it expects 8kb and not 2kb...
|
|
// So use the 'genericflashcard' option to fix it).
|
|
if (address<=(0xa000+gbRamSizeMask))
|
|
{
|
|
if(mapperReadRAM)
|
|
return mapperReadRAM(address);
|
|
return gbMemoryMap[address>>12][address & 0x0fff];
|
|
}
|
|
return 0xff;
|
|
}
|
|
|
|
if(address >= 0xff00) {
|
|
if ( address >= 0xFF10 && address <= 0xFF3F )
|
|
return gbSoundRead( address );
|
|
|
|
switch(address & 0x00ff) {
|
|
case 0x00:
|
|
{
|
|
if(gbSgbMode) {
|
|
gbSgbReadingController |= 4;
|
|
gbSgbResetPacketState();
|
|
}
|
|
|
|
int b = gbMemory[0xff00];
|
|
|
|
if((b & 0x30) == 0x20) {
|
|
b &= 0xf0;
|
|
|
|
int joy = 0;
|
|
if(gbSgbMode && gbSgbMultiplayer) {
|
|
switch(gbSgbNextController) {
|
|
case 0x0f:
|
|
joy = 0;
|
|
break;
|
|
case 0x0e:
|
|
joy = 1;
|
|
break;
|
|
case 0x0d:
|
|
joy = 2;
|
|
break;
|
|
case 0x0c:
|
|
joy = 3;
|
|
break;
|
|
default:
|
|
joy = 0;
|
|
}
|
|
}
|
|
int joystate = gbJoymask[joy];
|
|
if(!(joystate & 128))
|
|
b |= 0x08;
|
|
if(!(joystate & 64))
|
|
b |= 0x04;
|
|
if(!(joystate & 32))
|
|
b |= 0x02;
|
|
if(!(joystate & 16))
|
|
b |= 0x01;
|
|
|
|
gbMemory[0xff00] = b;
|
|
} else if((b & 0x30) == 0x10) {
|
|
b &= 0xf0;
|
|
|
|
int joy = 0;
|
|
if(gbSgbMode && gbSgbMultiplayer) {
|
|
switch(gbSgbNextController) {
|
|
case 0x0f:
|
|
joy = 0;
|
|
break;
|
|
case 0x0e:
|
|
joy = 1;
|
|
break;
|
|
case 0x0d:
|
|
joy = 2;
|
|
break;
|
|
case 0x0c:
|
|
joy = 3;
|
|
break;
|
|
default:
|
|
joy = 0;
|
|
}
|
|
}
|
|
int joystate = gbJoymask[joy];
|
|
if(!(joystate & 8))
|
|
b |= 0x08;
|
|
if(!(joystate & 4))
|
|
b |= 0x04;
|
|
if(!(joystate & 2))
|
|
b |= 0x02;
|
|
if(!(joystate & 1))
|
|
b |= 0x01;
|
|
|
|
gbMemory[0xff00] = b;
|
|
} else {
|
|
if(gbSgbMode && gbSgbMultiplayer) {
|
|
gbMemory[0xff00] = 0xf0 | gbSgbNextController;
|
|
} else {
|
|
gbMemory[0xff00] = 0xff;
|
|
}
|
|
}
|
|
}
|
|
return gbMemory[0xff00];
|
|
break;
|
|
case 0x01:
|
|
return gbMemory[0xff01];
|
|
case 0x02:
|
|
return (gbMemory[0xff02]);
|
|
case 0x04:
|
|
return register_DIV;
|
|
case 0x05:
|
|
return register_TIMA;
|
|
case 0x06:
|
|
return register_TMA;
|
|
case 0x07:
|
|
return (0xf8 | register_TAC);
|
|
case 0x0f:
|
|
return (0xe0 | gbMemory[0xff0f]);
|
|
case 0x30:
|
|
case 0x31:
|
|
case 0x32:
|
|
case 0x33:
|
|
case 0x34:
|
|
case 0x35:
|
|
case 0x36:
|
|
case 0x37:
|
|
case 0x38:
|
|
case 0x39:
|
|
case 0x3A:
|
|
case 0x3B:
|
|
case 0x3C:
|
|
case 0x3D:
|
|
case 0x3E:
|
|
case 0x3F:
|
|
if ((gbMemory[NR30] & 0x80) && (gbMemory[NR34] & 0x80))
|
|
return 0xFF;
|
|
else
|
|
return gbMemoryMap[address>>12][address & 0x0fff];
|
|
case 0x40:
|
|
return register_LCDC;
|
|
case 0x41:
|
|
// This is a GB/C only bug (ie. not GBA/SP).
|
|
if ((gbHardware & 7) && (gbLcdMode == 2) && (gbLcdModeDelayed == 1) && (!gbSpeed))
|
|
return (0x80 | gbMemory[0xff41] & 0xFC);
|
|
else
|
|
return (0x80 | gbMemory[0xff41]);
|
|
case 0x42:
|
|
return register_SCY;
|
|
case 0x43:
|
|
return register_SCX;
|
|
case 0x44:
|
|
if (((gbHardware & 7) && ((gbLcdMode == 1) && (gbLcdTicks == 0x71))) ||
|
|
(!(register_LCDC && 0x80)))
|
|
return (0);
|
|
else
|
|
return register_LY;
|
|
case 0x45:
|
|
return register_LYC;
|
|
case 0x46:
|
|
return register_DMA;
|
|
case 0x4a:
|
|
return register_WY;
|
|
case 0x4b:
|
|
return register_WX;
|
|
case 0x4f:
|
|
return (0xfe | register_VBK);
|
|
case 0x51:
|
|
return register_HDMA1;
|
|
case 0x52:
|
|
return register_HDMA2;
|
|
case 0x53:
|
|
return register_HDMA3;
|
|
case 0x54:
|
|
return register_HDMA4;
|
|
case 0x55:
|
|
return register_HDMA5;
|
|
case 0x68:
|
|
case 0x6a:
|
|
if (gbCgbMode)
|
|
return (0x40 | gbMemory[address]);
|
|
else
|
|
return 0xc0;
|
|
case 0x69:
|
|
case 0x6b:
|
|
if (gbCgbMode)
|
|
{
|
|
// No access to gbPalette during mode 3 (Color Panel Demo)
|
|
//if (((gbLcdModeDelayed != 3) && (!((gbLcdMode == 0) && (gbLcdTicks>=(GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299]-1)))) && (!gbSpeed)) ||
|
|
// (gbSpeed && ((gbLcdMode == 1) || (gbLcdMode == 2) ||
|
|
// ((gbLcdMode == 3) && (gbLcdTicks>(GBLCD_MODE_3_CLOCK_TICKS-2))) ||
|
|
// ((gbLcdMode == 0) && (gbLcdTicks<=(GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299]-2))))))
|
|
return (gbMemory[address]);
|
|
//else
|
|
// return 0xff;
|
|
}
|
|
else
|
|
return 0xff;
|
|
case 0x70:
|
|
if (gbCgbMode)
|
|
return (0xf8 | register_SVBK);
|
|
else
|
|
return 0xff;
|
|
case 0xff:
|
|
return register_IE;
|
|
}
|
|
}
|
|
// OAM not accessible during mode 2 & 3.
|
|
if(((address >= 0xfe00) && (address<0xfea0)) &&
|
|
(((gbLcdMode | gbLcdModeDelayed) &2) &&
|
|
(!(gbSpeed && (gbHardware & 0x2) && !(gbLcdModeDelayed & 2) && (gbLcdMode == 2))) ||
|
|
(gbSpeed && (gbHardware & 0x2) && (gbLcdModeDelayed == 0) && (gbLcdTicksDelayed == (GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299])))))
|
|
return 0xff;
|
|
|
|
if ((address >= 0xfea0) && (address < 0xff00))
|
|
{
|
|
if (gbHardware & 1)
|
|
return ((((address + ((address >> 4) - 0xfea)) >> 2) & 1) ? 0x00 : 0xff );
|
|
else if (gbHardware & 2)
|
|
return gbMemoryMap[address>>12][address & 0x0fff];
|
|
else if (gbHardware & 4)
|
|
return ((((address + ((address >> 4) - 0xfea)) >> 2) & 1) ? 0xff : 0x00 );
|
|
else if (gbHardware & 8)
|
|
return ((address & 0xf0) |((address & 0xf0)>>4));
|
|
}
|
|
|
|
return gbMemoryMap[address>>12][address & 0x0fff];
|
|
}
|
|
|
|
void gbVblank_interrupt()
|
|
{
|
|
gbCheatWrite(false); // Emulates GS codes.
|
|
gbMemory[0xff0f] = register_IF &= 0xfe;
|
|
gbWriteMemory(--SP.W, PC.B.B1);
|
|
gbWriteMemory(--SP.W, PC.B.B0);
|
|
PC.W = 0x40;
|
|
}
|
|
|
|
void gbLcd_interrupt()
|
|
{
|
|
gbMemory[0xff0f] = register_IF &= 0xfd;
|
|
gbWriteMemory(--SP.W, PC.B.B1);
|
|
gbWriteMemory(--SP.W, PC.B.B0);
|
|
PC.W = 0x48;
|
|
}
|
|
|
|
void gbTimer_interrupt()
|
|
{
|
|
gbMemory[0xff0f] = register_IF &= 0xfb;
|
|
gbWriteMemory(--SP.W, PC.B.B1);
|
|
gbWriteMemory(--SP.W, PC.B.B0);
|
|
PC.W = 0x50;
|
|
}
|
|
|
|
void gbSerial_interrupt()
|
|
{
|
|
gbMemory[0xff0f] = register_IF &= 0xf7;
|
|
gbWriteMemory(--SP.W, PC.B.B1);
|
|
gbWriteMemory(--SP.W, PC.B.B0);
|
|
PC.W = 0x58;
|
|
}
|
|
|
|
void gbJoypad_interrupt()
|
|
{
|
|
gbMemory[0xff0f] = register_IF &= 0xef;
|
|
gbWriteMemory(--SP.W, PC.B.B1);
|
|
gbWriteMemory(--SP.W, PC.B.B0);
|
|
PC.W = 0x60;
|
|
}
|
|
|
|
void gbSpeedSwitch()
|
|
{
|
|
gbBlackScreen = true;
|
|
if(gbSpeed == 0) {
|
|
gbSpeed = 1;
|
|
GBLCD_MODE_0_CLOCK_TICKS = 51 * 2;
|
|
GBLCD_MODE_1_CLOCK_TICKS = 1140 * 2;
|
|
GBLCD_MODE_2_CLOCK_TICKS = 20 * 2;
|
|
GBLCD_MODE_3_CLOCK_TICKS = 43 * 2;
|
|
GBLY_INCREMENT_CLOCK_TICKS = 114 * 2;
|
|
GBDIV_CLOCK_TICKS = 64;
|
|
GBTIMER_MODE_0_CLOCK_TICKS = 256;
|
|
GBTIMER_MODE_1_CLOCK_TICKS = 4;
|
|
GBTIMER_MODE_2_CLOCK_TICKS = 16;
|
|
GBTIMER_MODE_3_CLOCK_TICKS = 64;
|
|
GBSERIAL_CLOCK_TICKS = 128 * 2;
|
|
gbLcdTicks *= 2;
|
|
gbLcdTicksDelayed *=2;
|
|
gbLcdTicksDelayed--;
|
|
gbLcdLYIncrementTicks *= 2;
|
|
gbLcdLYIncrementTicksDelayed *= 2;
|
|
gbLcdLYIncrementTicksDelayed--;
|
|
gbSerialTicks *= 2;
|
|
//SOUND_CLOCK_TICKS = soundQuality * 24 * 2;
|
|
//soundTicks *= 2;
|
|
gbLine99Ticks = 3;
|
|
} else {
|
|
gbSpeed = 0;
|
|
GBLCD_MODE_0_CLOCK_TICKS = 51;
|
|
GBLCD_MODE_1_CLOCK_TICKS = 1140;
|
|
GBLCD_MODE_2_CLOCK_TICKS = 20;
|
|
GBLCD_MODE_3_CLOCK_TICKS = 43;
|
|
GBLY_INCREMENT_CLOCK_TICKS = 114;
|
|
GBDIV_CLOCK_TICKS = 64;
|
|
GBTIMER_MODE_0_CLOCK_TICKS = 256;
|
|
GBTIMER_MODE_1_CLOCK_TICKS = 4;
|
|
GBTIMER_MODE_2_CLOCK_TICKS = 16;
|
|
GBTIMER_MODE_3_CLOCK_TICKS = 64;
|
|
GBSERIAL_CLOCK_TICKS = 128;
|
|
gbLcdTicks >>= 1;
|
|
gbLcdTicksDelayed++;
|
|
gbLcdTicksDelayed >>=1;
|
|
gbLcdLYIncrementTicks >>= 1;
|
|
gbLcdLYIncrementTicksDelayed++;
|
|
gbLcdLYIncrementTicksDelayed >>= 1;
|
|
gbSerialTicks /= 2;
|
|
//SOUND_CLOCK_TICKS = soundQuality * 24;
|
|
//soundTicks /= 2;
|
|
gbLine99Ticks = 1;
|
|
if (gbHardware & 8)
|
|
gbLine99Ticks++;
|
|
}
|
|
gbDmaTicks += (134)*GBLY_INCREMENT_CLOCK_TICKS + (37<<(gbSpeed ? 1 : 0));
|
|
}
|
|
|
|
bool CPUIsGBBios(const char * file)
|
|
{
|
|
if(strlen(file) > 4) {
|
|
const char * p = strrchr(file,'.');
|
|
|
|
if(p != NULL) {
|
|
if(_stricmp(p, ".gb") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".bin") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".bios") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".rom") == 0)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void gbCPUInit(const char *biosFileName, bool useBiosFile)
|
|
{
|
|
useBios = false;
|
|
if (useBiosFile)
|
|
{
|
|
/* int size = 0x100;
|
|
if(utilLoad(biosFileName,
|
|
CPUIsGBBios,
|
|
bios,
|
|
size)) {
|
|
if(size == 0x100)
|
|
useBios = true;
|
|
else
|
|
systemMessage(MSG_INVALID_BIOS_FILE_SIZE, N_("Invalid BOOTROM file size"));
|
|
}*/
|
|
}
|
|
}
|
|
|
|
void gbGetHardwareType()
|
|
{
|
|
gbCgbMode = 0;
|
|
gbSgbMode = 0;
|
|
if(gbRom[0x143] & 0x80) {
|
|
if((gbEmulatorType == 0) ||
|
|
gbEmulatorType == 1 ||
|
|
gbEmulatorType == 4) {
|
|
gbCgbMode = 1;
|
|
}
|
|
}
|
|
|
|
if((gbCgbMode == 0 ) && (gbRom[0x146] == 0x03)) {
|
|
if(gbEmulatorType == 0 ||
|
|
gbEmulatorType == 2 ||
|
|
gbEmulatorType == 5)
|
|
gbSgbMode = 1;
|
|
}
|
|
|
|
gbHardware = 1; // GB
|
|
if (((gbCgbMode == 1) && (gbEmulatorType == 0)) || (gbEmulatorType == 1))
|
|
gbHardware = 2; // GBC
|
|
else if (((gbSgbMode == 1) && (gbEmulatorType == 0)) || (gbEmulatorType == 2) || (gbEmulatorType == 5))
|
|
gbHardware = 4; // SGB(2)
|
|
else if (gbEmulatorType == 4)
|
|
gbHardware = 8; // GBA
|
|
|
|
gbGBCColorType = 0;
|
|
if (gbHardware & 8) // If GBA is selected, choose the GBA default settings.
|
|
gbGBCColorType = 2; // (0 = GBC, 1 = GBA, 2 = GBASP)
|
|
}
|
|
|
|
void gbReset()
|
|
{
|
|
systemCartridgeRumble(false);
|
|
gbGetHardwareType();
|
|
gbPaletteReset();
|
|
|
|
oldRegister_WY = 146;
|
|
gbInterruptLaunched = 0;
|
|
|
|
if(gbCgbMode == 1) {
|
|
if (gbVram == NULL)
|
|
gbVram = (u8 *)malloc(0x4000);
|
|
if (gbWram == NULL)
|
|
gbWram = (u8 *)malloc(0x8000);
|
|
memset(gbVram,0,0x4000);
|
|
memset(gbPalette,0, 2*128);
|
|
}
|
|
else
|
|
{
|
|
if(gbVram != NULL) {
|
|
free(gbVram);
|
|
gbVram = NULL;
|
|
}
|
|
if(gbWram != NULL) {
|
|
free(gbWram);
|
|
gbWram = NULL;
|
|
}
|
|
}
|
|
|
|
gbLYChangeHappened = false;
|
|
gbLCDChangeHappened = false;
|
|
gbBlackScreen = false;
|
|
gbInterruptWait = 0;
|
|
gbDmaTicks = 0;
|
|
clockTicks = 0;
|
|
|
|
if(gbSpeed) {
|
|
gbSpeedSwitch();
|
|
gbMemory[0xff4d] = 0;
|
|
}
|
|
|
|
// clean Wram
|
|
// This kinda emulates the startup state of Wram on GB/C (not very accurate,
|
|
// but way closer to the reality than filling it with 00es or FFes).
|
|
// On GBA/GBASP, it's kinda filled with random data.
|
|
// In all cases, most of the 2nd bank is filled with 00s.
|
|
// The starting data are important for some 'buggy' games, like Buster Brothers or
|
|
// Karamuchou ha Oosawagi!.
|
|
if (gbMemory != NULL)
|
|
{
|
|
memset(gbMemory,0xff, 65536);
|
|
for (int temp = 0xC000; temp < 0xE000; temp++)
|
|
if ((temp & 0x8) ^((temp & 0x800)>>8))
|
|
{
|
|
if ((gbHardware & 0x02) && (gbGBCColorType == 0))
|
|
gbMemory[temp] = 0x0;
|
|
else
|
|
gbMemory[temp] = 0x0f;
|
|
}
|
|
|
|
else
|
|
gbMemory[temp] = 0xff;
|
|
}
|
|
|
|
// GB bios set this memory area to 0
|
|
// Fixes Pitman (J) title screen
|
|
if (gbHardware & 0x1) {
|
|
memset(&gbMemory[0x8000], 0x0, 0x2000);
|
|
}
|
|
|
|
// clean LineBuffer
|
|
if (gbLineBuffer != NULL)
|
|
memset(gbLineBuffer, 0, sizeof(gbLineBuffer));
|
|
// clean Pix
|
|
if (pix != NULL)
|
|
memset(pix, 0, sizeof(pix));
|
|
// clean Vram
|
|
if (gbVram != NULL)
|
|
memset(gbVram, 0, 0x4000);
|
|
// clean Wram 2
|
|
// This kinda emulates the startup state of Wram on GBC (not very accurate,
|
|
// but way closer to the reality than filling it with 00es or FFes).
|
|
// On GBA/GBASP, it's kinda filled with random data.
|
|
// In all cases, most of the 2nd bank is filled with 00s.
|
|
// The starting data are important for some 'buggy' games, like Buster Brothers or
|
|
// Karamuchou ha Oosawagi!
|
|
if (gbWram != NULL)
|
|
{
|
|
for (int i = 0; i<8; i++)
|
|
if (i != 2)
|
|
memcpy ((u16 *)(gbWram+i*0x1000), (u16 *)(gbMemory+0xC000), 0x1000);
|
|
}
|
|
|
|
memset(gbSCYLine,0,sizeof(gbSCYLine));
|
|
memset(gbSCXLine,0,sizeof(gbSCXLine));
|
|
memset(gbBgpLine,0xfc,sizeof(gbBgpLine));
|
|
if (gbHardware & 5)
|
|
{
|
|
memset(gbObp0Line,0xff,sizeof(gbObp0Line));
|
|
memset(gbObp1Line,0xff,sizeof(gbObp1Line));
|
|
}
|
|
else
|
|
{
|
|
memset(gbObp0Line,0x0,sizeof(gbObp0Line));
|
|
memset(gbObp1Line,0x0,sizeof(gbObp1Line));
|
|
}
|
|
memset(gbSpritesTicks,0x0,sizeof(gbSpritesTicks));
|
|
|
|
SP.W = 0xfffe;
|
|
AF.W = 0x01b0;
|
|
BC.W = 0x0013;
|
|
DE.W = 0x00d8;
|
|
HL.W = 0x014d;
|
|
PC.W = 0x0100;
|
|
IFF = 0;
|
|
gbInt48Signal = 0;
|
|
|
|
register_TIMA = 0;
|
|
register_TMA = 0;
|
|
register_TAC = 0;
|
|
gbMemory[0xff0f] = register_IF = 1;
|
|
gbMemory[0xff40] = register_LCDC = 0x91;
|
|
gbMemory[0xff47] = 0xfc;
|
|
|
|
if (gbCgbMode)
|
|
gbMemory[0xff4d] = 0x7e;
|
|
else
|
|
gbMemory[0xff4d] = 0xff;
|
|
|
|
if (!gbCgbMode)
|
|
gbMemory[0xff70] = gbMemory[0xff74] = 0xff;
|
|
|
|
if (gbCgbMode)
|
|
gbMemory[0xff56] = 0x3e;
|
|
else
|
|
gbMemory[0xff56] = 0xff;
|
|
|
|
register_SCY = 0;
|
|
register_SCX = 0;
|
|
register_LYC = 0;
|
|
register_DMA = 0xff;
|
|
register_WY = 0;
|
|
register_WX = 0;
|
|
register_VBK = 0;
|
|
register_HDMA1 = 0xff;
|
|
register_HDMA2 = 0xff;
|
|
register_HDMA3 = 0xff;
|
|
register_HDMA4 = 0xff;
|
|
register_HDMA5 = 0xff;
|
|
register_SVBK = 0;
|
|
register_IE = 0;
|
|
|
|
if (gbCgbMode)
|
|
gbMemory[0xff02] = 0x7c;
|
|
else
|
|
gbMemory[0xff02] = 0x7e;
|
|
|
|
gbMemory[0xff03] = 0xff;
|
|
int i;
|
|
for (i = 0x8; i<0xf; i++)
|
|
gbMemory[0xff00+i] = 0xff;
|
|
|
|
gbMemory[0xff13] = 0xff;
|
|
gbMemory[0xff15] = 0xff;
|
|
gbMemory[0xff18] = 0xff;
|
|
gbMemory[0xff1d] = 0xff;
|
|
gbMemory[0xff1f] = 0xff;
|
|
|
|
for (i = 0x27; i<0x30; i++)
|
|
gbMemory[0xff00+i] = 0xff;
|
|
|
|
gbMemory[0xff4c] = 0xff;
|
|
gbMemory[0xff4e] = 0xff;
|
|
gbMemory[0xff50] = 0xff;
|
|
|
|
for (i = 0x57; i<0x68; i++)
|
|
gbMemory[0xff00+i] = 0xff;
|
|
|
|
for (i = 0x5d; i<0x70; i++)
|
|
gbMemory[0xff00+i] = 0xff;
|
|
|
|
gbMemory[0xff71] = 0xff;
|
|
|
|
for (i = 0x78; i<0x80; i++)
|
|
gbMemory[0xff00+i] = 0xff;
|
|
|
|
if (gbHardware & 0xa)
|
|
{
|
|
|
|
if (gbHardware & 2)
|
|
{
|
|
AF.W = 0x1180;
|
|
BC.W = 0x0000;
|
|
}
|
|
else
|
|
{
|
|
AF.W = 0x1100;
|
|
BC.W = 0x0100; // GBA/SP have B = 0x01 (which means GBC & GBA/SP bootrom are different !)
|
|
}
|
|
|
|
gbMemory[0xff26] = 0xf1;
|
|
if (gbCgbMode)
|
|
{
|
|
|
|
gbMemory[0xff31] = 0xff;
|
|
gbMemory[0xff33] = 0xff;
|
|
gbMemory[0xff35] = 0xff;
|
|
gbMemory[0xff37] = 0xff;
|
|
gbMemory[0xff39] = 0xff;
|
|
gbMemory[0xff3b] = 0xff;
|
|
gbMemory[0xff3d] = 0xff;
|
|
|
|
gbMemory[0xff44] = register_LY = 0x90;
|
|
gbDivTicks = 0x19 + ((gbHardware & 2) >> 1);
|
|
gbInternalTimer = 0x58 + ((gbHardware & 2) >> 1);
|
|
gbLcdTicks = GBLCD_MODE_1_CLOCK_TICKS -
|
|
(register_LY-0x8F)*GBLY_INCREMENT_CLOCK_TICKS + 72 + ((gbHardware & 2) >> 1);
|
|
gbLcdLYIncrementTicks = 72 + ((gbHardware & 2) >> 1);
|
|
gbMemory[0xff04] = register_DIV = 0x1E;
|
|
}
|
|
else
|
|
{
|
|
gbMemory[0xff44] = register_LY = 0x94;
|
|
gbDivTicks = 0x22 + ((gbHardware & 2) >> 1);
|
|
gbInternalTimer = 0x61 + ((gbHardware & 2) >> 1);
|
|
gbLcdTicks = GBLCD_MODE_1_CLOCK_TICKS -
|
|
(register_LY-0x8F)*GBLY_INCREMENT_CLOCK_TICKS + 25 + ((gbHardware & 2) >> 1);
|
|
gbLcdLYIncrementTicks = 25 + ((gbHardware & 2) >> 1);
|
|
gbMemory[0xff04] = register_DIV = 0x26;
|
|
}
|
|
|
|
|
|
DE.W = 0xff56;
|
|
HL.W = 0x000d;
|
|
|
|
register_HDMA5 = 0xff;
|
|
gbMemory[0xff68] = 0xc0;
|
|
gbMemory[0xff6a] = 0xc0;
|
|
|
|
|
|
gbMemory[0xff41] = register_STAT = 0x81;
|
|
gbLcdMode = 1;
|
|
}
|
|
else
|
|
{
|
|
if (gbHardware & 4)
|
|
{
|
|
if(gbEmulatorType == 5)
|
|
AF.W = 0xffb0;
|
|
else
|
|
AF.W = 0x01b0;
|
|
BC.W = 0x0013;
|
|
DE.W = 0x00d8;
|
|
HL.W = 0x014d;
|
|
}
|
|
gbDivTicks = 14;
|
|
gbInternalTimer = gbDivTicks--;
|
|
gbMemory[0xff04] = register_DIV = 0xAB;
|
|
gbMemory[0xff41] = register_STAT = 0x85;
|
|
gbMemory[0xff44] = register_LY = 0x00;
|
|
gbLcdTicks = 15;
|
|
gbLcdLYIncrementTicks = 114+gbLcdTicks;
|
|
gbLcdMode = 1;
|
|
|
|
// used for the handling of the gb Boot Rom
|
|
if ((gbHardware & 5) && (bios != NULL) && useBios && !skipBios)
|
|
{
|
|
memcpy ((u8 *)(gbMemory), (u8 *)(gbRom), 0x1000);
|
|
memcpy ((u8 *)(gbMemory), (u8 *)(bios), 0x100);
|
|
gbWhiteScreen = 0;
|
|
|
|
gbInternalTimer = 0x3e;
|
|
gbDivTicks = 0x3f;
|
|
gbMemory[0xff04] = register_DIV = 0x00;
|
|
PC.W = 0x0000;
|
|
register_LCDC = 0x11;
|
|
gbScreenOn = false;
|
|
gbLcdTicks = 0;
|
|
gbLcdMode = 0;
|
|
gbLcdModeDelayed = 0;
|
|
gbMemory[0xff41] = register_STAT &= 0xfc;
|
|
gbInt48Signal = 0;
|
|
gbLcdLYIncrementTicks = GBLY_INCREMENT_CLOCK_TICKS;
|
|
}
|
|
}
|
|
|
|
gbLine99Ticks = 1;
|
|
if (gbHardware & 8)
|
|
gbLine99Ticks++;
|
|
|
|
gbLcdModeDelayed = gbLcdMode;
|
|
gbLcdTicksDelayed = gbLcdTicks+1;
|
|
gbLcdLYIncrementTicksDelayed = gbLcdLYIncrementTicks+1;
|
|
|
|
|
|
gbTimerModeChange = false;
|
|
gbTimerOnChange = false;
|
|
gbTimerOn = false;
|
|
|
|
if(gbCgbMode) {
|
|
for (int i = 0; i<0x20; i++)
|
|
gbPalette[i] = 0x7fff;
|
|
|
|
// This is just to show that the starting values of the OBJ palettes are different
|
|
// between the 3 consoles, and that they 'kinda' stay the same at each reset
|
|
// (they can slightly change, somehow (randomly?)).
|
|
// You can check the effects of gbGBCColorType on the "Vila Caldan Color" gbc demo.
|
|
// Note that you could also check the Div register to check on which system the game
|
|
// is running (GB,GBC and GBA(SP) have different startup values).
|
|
// Unfortunatly, I don't have any SGB system, so I can't get their starting values.
|
|
|
|
if (gbGBCColorType == 0) // GBC Hardware
|
|
{
|
|
gbPalette[0x20] = 0x0600;
|
|
gbPalette[0x21] = 0xfdf3;
|
|
gbPalette[0x22] = 0x041c;
|
|
gbPalette[0x23] = 0xf5db;
|
|
gbPalette[0x24] = 0x4419;
|
|
gbPalette[0x25] = 0x57ea;
|
|
gbPalette[0x26] = 0x2808;
|
|
gbPalette[0x27] = 0x9b75;
|
|
gbPalette[0x28] = 0x129b;
|
|
gbPalette[0x29] = 0xfce0;
|
|
gbPalette[0x2a] = 0x22da;
|
|
gbPalette[0x2b] = 0x4ac5;
|
|
gbPalette[0x2c] = 0x2d71;
|
|
gbPalette[0x2d] = 0xf0c2;
|
|
gbPalette[0x2e] = 0x5137;
|
|
gbPalette[0x2f] = 0x2d41;
|
|
gbPalette[0x30] = 0x6b2d;
|
|
gbPalette[0x31] = 0x2215;
|
|
gbPalette[0x32] = 0xbe0a;
|
|
gbPalette[0x33] = 0xc053;
|
|
gbPalette[0x34] = 0xfe5f;
|
|
gbPalette[0x35] = 0xe000;
|
|
gbPalette[0x36] = 0xbe10;
|
|
gbPalette[0x37] = 0x914d;
|
|
gbPalette[0x38] = 0x7f91;
|
|
gbPalette[0x39] = 0x02b5;
|
|
gbPalette[0x3a] = 0x77ac;
|
|
gbPalette[0x3b] = 0x14e5;
|
|
gbPalette[0x3c] = 0xcf89;
|
|
gbPalette[0x3d] = 0xa03d;
|
|
gbPalette[0x3e] = 0xfd50;
|
|
gbPalette[0x3f] = 0x91ff;
|
|
}
|
|
else if (gbGBCColorType == 1) // GBA Hardware
|
|
{
|
|
gbPalette[0x20] = 0xbe00;
|
|
gbPalette[0x21] = 0xfdfd;
|
|
gbPalette[0x22] = 0xbd69;
|
|
gbPalette[0x23] = 0x7baf;
|
|
gbPalette[0x24] = 0xf5ff;
|
|
gbPalette[0x25] = 0x3f8f;
|
|
gbPalette[0x26] = 0xcee5;
|
|
gbPalette[0x27] = 0x5bf7;
|
|
gbPalette[0x28] = 0xb35b;
|
|
gbPalette[0x29] = 0xef97;
|
|
gbPalette[0x2a] = 0xef9f;
|
|
gbPalette[0x2b] = 0x97f7;
|
|
gbPalette[0x2c] = 0x82bf;
|
|
gbPalette[0x2d] = 0x9f3d;
|
|
gbPalette[0x2e] = 0xddde;
|
|
gbPalette[0x2f] = 0xbad5;
|
|
gbPalette[0x30] = 0x3cba;
|
|
gbPalette[0x31] = 0xdfd7;
|
|
gbPalette[0x32] = 0xedea;
|
|
gbPalette[0x33] = 0xfeda;
|
|
gbPalette[0x34] = 0xf7f9;
|
|
gbPalette[0x35] = 0xfdee;
|
|
gbPalette[0x36] = 0x6d2f;
|
|
gbPalette[0x37] = 0xf0e6;
|
|
gbPalette[0x38] = 0xf7f0;
|
|
gbPalette[0x39] = 0xf296;
|
|
gbPalette[0x3a] = 0x3bf1;
|
|
gbPalette[0x3b] = 0xe211;
|
|
gbPalette[0x3c] = 0x69ba;
|
|
gbPalette[0x3d] = 0x3d0d;
|
|
gbPalette[0x3e] = 0xdfd3;
|
|
gbPalette[0x3f] = 0xa6ba;
|
|
}
|
|
else if (gbGBCColorType == 2) // GBASP Hardware
|
|
{
|
|
gbPalette[0x20] = 0x9c00;
|
|
gbPalette[0x21] = 0x6340;
|
|
gbPalette[0x22] = 0x10c6;
|
|
gbPalette[0x23] = 0xdb97;
|
|
gbPalette[0x24] = 0x7622;
|
|
gbPalette[0x25] = 0x3e57;
|
|
gbPalette[0x26] = 0x2e12;
|
|
gbPalette[0x27] = 0x95c3;
|
|
gbPalette[0x28] = 0x1095;
|
|
gbPalette[0x29] = 0x488c;
|
|
gbPalette[0x2a] = 0x8241;
|
|
gbPalette[0x2b] = 0xde8c;
|
|
gbPalette[0x2c] = 0xfabc;
|
|
gbPalette[0x2d] = 0x0e81;
|
|
gbPalette[0x2e] = 0x7675;
|
|
gbPalette[0x2f] = 0xfdec;
|
|
gbPalette[0x30] = 0xddfd;
|
|
gbPalette[0x31] = 0x5995;
|
|
gbPalette[0x32] = 0x066a;
|
|
gbPalette[0x33] = 0xed1e;
|
|
gbPalette[0x34] = 0x1e84;
|
|
gbPalette[0x35] = 0x1d14;
|
|
gbPalette[0x36] = 0x11c3;
|
|
gbPalette[0x37] = 0x2749;
|
|
gbPalette[0x38] = 0xa727;
|
|
gbPalette[0x39] = 0x6266;
|
|
gbPalette[0x3a] = 0xe27b;
|
|
gbPalette[0x3b] = 0xe3fc;
|
|
gbPalette[0x3c] = 0x1f76;
|
|
gbPalette[0x3d] = 0xf158;
|
|
gbPalette[0x3e] = 0x468e;
|
|
gbPalette[0x3f] = 0xa540;
|
|
}
|
|
} else {
|
|
if(gbSgbMode) {
|
|
for(int i = 0; i < 12; i++)
|
|
gbPalette[i] = systemGbPalette[gbPaletteOption*12+i];
|
|
|
|
}
|
|
for(int i = 0; i < 12; i++)
|
|
gbPalette[i] = systemGbPalette[gbPaletteOption*12+i];
|
|
}
|
|
|
|
GBTIMER_MODE_0_CLOCK_TICKS = 256;
|
|
GBTIMER_MODE_1_CLOCK_TICKS = 4;
|
|
GBTIMER_MODE_2_CLOCK_TICKS = 16;
|
|
GBTIMER_MODE_3_CLOCK_TICKS = 64;
|
|
|
|
GBLY_INCREMENT_CLOCK_TICKS = 114;
|
|
gbTimerTicks = GBTIMER_MODE_0_CLOCK_TICKS;
|
|
gbTimerClockTicks = GBTIMER_MODE_0_CLOCK_TICKS;
|
|
gbSerialTicks = 0;
|
|
gbSerialBits = 0;
|
|
gbSerialOn = 0;
|
|
gbWindowLine = -1;
|
|
gbTimerOn = false;
|
|
gbTimerMode = 0;
|
|
gbSpeed = 0;
|
|
gbJoymask[0] = gbJoymask[1] = gbJoymask[2] = gbJoymask[3] = 0;
|
|
|
|
if(gbCgbMode) {
|
|
gbSpeed = 0;
|
|
gbHdmaOn = 0;
|
|
gbHdmaSource = 0x99d0;
|
|
gbHdmaDestination = 0x99d0;
|
|
gbVramBank = 0;
|
|
gbWramBank = 1;
|
|
|
|
}
|
|
|
|
// used to clean the borders
|
|
if (gbSgbMode)
|
|
{
|
|
gbSgbResetFlag = true;
|
|
gbSgbReset();
|
|
if (gbBorderOn)
|
|
gbSgbRenderBorder();
|
|
gbSgbResetFlag = false;
|
|
}
|
|
|
|
for(i = 0; i < 4; i++)
|
|
gbBgp[i] = gbObp0[i] = gbObp1[i] = i;
|
|
|
|
memset(&gbDataMBC1,0, sizeof(gbDataMBC1));
|
|
gbDataMBC1.mapperROMBank = 1;
|
|
|
|
gbDataMBC2.mapperRAMEnable = 0;
|
|
gbDataMBC2.mapperROMBank = 1;
|
|
|
|
memset(&gbDataMBC3,0, 6 * sizeof(int));
|
|
gbDataMBC3.mapperROMBank = 1;
|
|
|
|
memset(&gbDataMBC5, 0, sizeof(gbDataMBC5));
|
|
gbDataMBC5.mapperROMBank = 1;
|
|
if (gbRomType >= 0x1c && gbRomType<=0x1e)
|
|
gbDataMBC5.isRumbleCartridge = 1;
|
|
|
|
memset(&gbDataHuC1, 0, sizeof(gbDataHuC1));
|
|
gbDataHuC1.mapperROMBank = 1;
|
|
|
|
memset(&gbDataHuC3, 0, sizeof(gbDataHuC3));
|
|
gbDataHuC3.mapperROMBank = 1;
|
|
|
|
memset(&gbDataTAMA5,0, 26*sizeof(int));
|
|
gbDataTAMA5.mapperROMBank = 1;
|
|
|
|
memset(&gbDataMMM01,0, sizeof(gbDataMMM01));
|
|
gbDataMMM01.mapperROMBank = 1;
|
|
|
|
if (useBios && !skipBios && (gbHardware & 5))
|
|
{
|
|
gbMemoryMap[0x00] = &gbMemory[0x0000];
|
|
inBios = true;
|
|
}
|
|
else
|
|
{
|
|
gbMemoryMap[0x00] = &gbRom[0x0000];
|
|
inBios = false;
|
|
}
|
|
|
|
gbMemoryMap[0x01] = &gbRom[0x1000];
|
|
gbMemoryMap[0x02] = &gbRom[0x2000];
|
|
gbMemoryMap[0x03] = &gbRom[0x3000];
|
|
gbMemoryMap[0x04] = &gbRom[0x4000];
|
|
gbMemoryMap[0x05] = &gbRom[0x5000];
|
|
gbMemoryMap[0x06] = &gbRom[0x6000];
|
|
gbMemoryMap[0x07] = &gbRom[0x7000];
|
|
if(gbCgbMode) {
|
|
gbMemoryMap[0x08] = &gbVram[0x0000];
|
|
gbMemoryMap[0x09] = &gbVram[0x1000];
|
|
gbMemoryMap[0x0a] = &gbMemory[0xa000];
|
|
gbMemoryMap[0x0b] = &gbMemory[0xb000];
|
|
gbMemoryMap[0x0c] = &gbMemory[0xc000];
|
|
gbMemoryMap[0x0d] = &gbWram[0x1000];
|
|
gbMemoryMap[0x0e] = &gbMemory[0xe000];
|
|
gbMemoryMap[0x0f] = &gbMemory[0xf000];
|
|
} else {
|
|
gbMemoryMap[0x08] = &gbMemory[0x8000];
|
|
gbMemoryMap[0x09] = &gbMemory[0x9000];
|
|
gbMemoryMap[0x0a] = &gbMemory[0xa000];
|
|
gbMemoryMap[0x0b] = &gbMemory[0xb000];
|
|
gbMemoryMap[0x0c] = &gbMemory[0xc000];
|
|
gbMemoryMap[0x0d] = &gbMemory[0xd000];
|
|
gbMemoryMap[0x0e] = &gbMemory[0xe000];
|
|
gbMemoryMap[0x0f] = &gbMemory[0xf000];
|
|
}
|
|
|
|
if(gbRam) {
|
|
gbMemoryMap[0x0a] = &gbRam[0x0000];
|
|
gbMemoryMap[0x0b] = &gbRam[0x1000];
|
|
}
|
|
|
|
gbSoundReset();
|
|
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
|
|
gbLastTime = systemGetClock();
|
|
gbFrameCount = 0;
|
|
|
|
gbScreenOn = true;
|
|
gbSystemMessage = false;
|
|
|
|
gbCheatWrite(true); // Emulates GS codes.
|
|
|
|
}
|
|
|
|
void gbWriteSaveMBC1(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
FILE *gzFile = fopen(name,"wb");
|
|
|
|
if(gzFile == NULL) {
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name);
|
|
return;
|
|
}
|
|
|
|
fwrite(gbRam,
|
|
1,
|
|
(gbRamSizeMask+1),
|
|
gzFile);
|
|
|
|
fclose(gzFile);
|
|
}
|
|
}
|
|
|
|
void gbWriteSaveMBC2(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
FILE *file = fopen(name, "wb");
|
|
|
|
if(file == NULL) {
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name);
|
|
return;
|
|
}
|
|
|
|
fwrite(&gbMemoryMap[0x0a],
|
|
1,
|
|
512,
|
|
file);
|
|
|
|
fclose(file);
|
|
}
|
|
}
|
|
|
|
void gbWriteSaveMBC3(const char * name, bool extendedSave)
|
|
{
|
|
if (gbRam || extendedSave)
|
|
{
|
|
FILE *gzFile = fopen(name,"wb");
|
|
if (gbRam)
|
|
{
|
|
|
|
if(gzFile == NULL) {
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name);
|
|
return;
|
|
}
|
|
|
|
fwrite(gbRam,
|
|
1,
|
|
(gbRamSizeMask+1),
|
|
gzFile);
|
|
}
|
|
|
|
if(extendedSave)
|
|
fwrite(&gbDataMBC3.mapperSeconds,
|
|
1,
|
|
10*sizeof(int) + sizeof(time_t),
|
|
gzFile);
|
|
|
|
fclose(gzFile);
|
|
}
|
|
}
|
|
|
|
void gbWriteSaveMBC5(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
FILE *gzFile = fopen(name,"wb");
|
|
|
|
if(gzFile == NULL) {
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name);
|
|
return;
|
|
}
|
|
|
|
fwrite(gbRam,
|
|
1,
|
|
(gbRamSizeMask+1),
|
|
gzFile);
|
|
|
|
fclose(gzFile);
|
|
}
|
|
}
|
|
|
|
void gbWriteSaveMBC7(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
FILE *file = fopen(name, "wb");
|
|
|
|
if(file == NULL) {
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name);
|
|
return;
|
|
}
|
|
|
|
fwrite(&gbMemory[0xa000],
|
|
1,
|
|
256,
|
|
file);
|
|
|
|
fclose(file);
|
|
}
|
|
}
|
|
|
|
void gbWriteSaveTAMA5(const char * name, bool extendedSave)
|
|
{
|
|
FILE *gzFile = fopen(name,"wb");
|
|
|
|
if(gzFile == NULL) {
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name);
|
|
return;
|
|
}
|
|
if (gbRam)
|
|
fwrite(gbRam,
|
|
1,
|
|
(gbRamSizeMask+1),
|
|
gzFile);
|
|
|
|
fwrite(gbTAMA5ram,
|
|
1,
|
|
(gbTAMA5ramSize),
|
|
gzFile);
|
|
|
|
if(extendedSave)
|
|
fwrite(&gbDataTAMA5.mapperSeconds,
|
|
1,
|
|
14*sizeof(int) + sizeof(time_t),
|
|
gzFile);
|
|
|
|
fclose(gzFile);
|
|
}
|
|
|
|
void gbWriteSaveMMM01(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
FILE *gzFile = fopen(name,"wb");
|
|
|
|
if(gzFile == NULL) {
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name);
|
|
return;
|
|
}
|
|
|
|
fwrite(gbRam,
|
|
1,
|
|
(gbRamSizeMask+1),
|
|
gzFile);
|
|
|
|
fclose(gzFile);
|
|
}
|
|
}
|
|
|
|
|
|
bool gbReadSaveMBC1(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
gzFile gzFile = gzopen(name, "rb");
|
|
|
|
if(gzFile == NULL) {
|
|
return false;
|
|
}
|
|
|
|
int read = gzread(gzFile,
|
|
gbRam,
|
|
(gbRamSizeMask+1));
|
|
|
|
if(read != (gbRamSizeMask+1)) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gzclose(gzFile);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
// Also checks if the battery file it bigger than gbRamSizeMask+1 !
|
|
u8 data[1];
|
|
data[0] = 0;
|
|
|
|
read = gzread(gzFile,
|
|
data,
|
|
1);
|
|
if(read >0) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gzclose(gzFile);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
gzclose(gzFile);
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
|
|
bool gbReadSaveMBC2(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
FILE *file = fopen(name, "rb");
|
|
|
|
if(file == NULL) {
|
|
return false;
|
|
}
|
|
|
|
size_t read = fread(&gbMemoryMap[0x0a],
|
|
1,
|
|
512,
|
|
file);
|
|
|
|
if(read != 512) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
fclose(file);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
// Also checks if the battery file it bigger than gbRamSizeMask+1 !
|
|
u8 data[1];
|
|
data[0] = 0;
|
|
|
|
read = fread(&data[0],
|
|
1,
|
|
1,
|
|
file);
|
|
if(read > 0) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
fclose(file);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
fclose(file);
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
bool gbReadSaveMBC3(const char * name)
|
|
{
|
|
gzFile gzFile = gzopen(name, "rb");
|
|
|
|
if(gzFile == NULL) {
|
|
return false;
|
|
}
|
|
|
|
int read = 0;
|
|
|
|
if (gbRam)
|
|
read = gzread(gzFile,
|
|
gbRam,
|
|
(gbRamSizeMask+1));
|
|
else
|
|
read = (gbRamSizeMask+1);
|
|
|
|
|
|
bool res = true;
|
|
|
|
if(read != (gbRamSizeMask+1)) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gbBatteryError = true;
|
|
res = false;
|
|
} else if ((gbRomType == 0xf) || (gbRomType == 0x10)){
|
|
read = gzread(gzFile,
|
|
&gbDataMBC3.mapperSeconds,
|
|
sizeof(int)*10 + sizeof(time_t));
|
|
|
|
if(read != (sizeof(int)*10 + sizeof(time_t)) && read != 0) {
|
|
systemMessage(MSG_FAILED_TO_READ_RTC,N_("Failed to read RTC from save game %s (continuing)"),
|
|
name);
|
|
res = false;
|
|
}
|
|
else if (read == 0)
|
|
{
|
|
systemMessage(MSG_FAILED_TO_READ_RTC,N_("Failed to read RTC from save game %s (continuing)"),
|
|
name);
|
|
res = false;
|
|
}
|
|
else
|
|
{
|
|
// Also checks if the battery file it bigger than gbRamSizeMask+1+RTC !
|
|
u8 data[1];
|
|
data[0] = 0;
|
|
|
|
read = gzread(gzFile,
|
|
data,
|
|
1);
|
|
if(read >0) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gbBatteryError = true;
|
|
res = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
gzclose(gzFile);
|
|
return res;
|
|
}
|
|
|
|
bool gbReadSaveMBC5(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
gzFile gzFile = gzopen(name, "rb");
|
|
|
|
if(gzFile == NULL) {
|
|
return false;
|
|
}
|
|
|
|
int read = gzread(gzFile,
|
|
gbRam,
|
|
(gbRamSizeMask+1));
|
|
|
|
if(read != (gbRamSizeMask+1)) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gzclose(gzFile);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
|
|
// Also checks if the battery file it bigger than gbRamSizeMask+1 !
|
|
u8 data[1];
|
|
data[0] = 0;
|
|
|
|
read = gzread(gzFile,
|
|
data,
|
|
1);
|
|
if(read >0) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gzclose(gzFile);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
gzclose(gzFile);
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
bool gbReadSaveMBC7(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
FILE *file = fopen(name, "rb");
|
|
|
|
if(file == NULL) {
|
|
return false;
|
|
}
|
|
|
|
size_t read = fread(&gbMemory[0xa000],
|
|
1,
|
|
256,
|
|
file);
|
|
|
|
if(read != 256) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
fclose(file);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
// Also checks if the battery file it bigger than gbRamSizeMask+1 !
|
|
u8 data[1];
|
|
data[0] = 0;
|
|
|
|
read = fread(&data[0],
|
|
1,
|
|
1,
|
|
file);
|
|
if(read > 0) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
fclose(file);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
fclose(file);
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
bool gbReadSaveTAMA5(const char * name)
|
|
{
|
|
gzFile gzFile = gzopen(name, "rb");
|
|
|
|
if(gzFile == NULL) {
|
|
return false;
|
|
}
|
|
|
|
int read = 0;
|
|
|
|
if (gbRam)
|
|
read = gzread(gzFile,
|
|
gbRam,
|
|
(gbRamSizeMask+1));
|
|
else
|
|
read = gbRamSizeMask;
|
|
|
|
read += gzread(gzFile,
|
|
gbTAMA5ram,
|
|
gbTAMA5ramSize);
|
|
|
|
bool res = true;
|
|
|
|
if(read != (gbRamSizeMask+gbTAMA5ramSize+1)) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gbBatteryError = true;
|
|
res = false;
|
|
} else {
|
|
read = gzread(gzFile,
|
|
&gbDataTAMA5.mapperSeconds,
|
|
sizeof(int)*14 + sizeof(time_t));
|
|
|
|
if(read != (sizeof(int)*14 + sizeof(time_t)) && read != 0) {
|
|
systemMessage(MSG_FAILED_TO_READ_RTC,N_("Failed to read RTC from save game %s (continuing)"),
|
|
name);
|
|
res = false;
|
|
}
|
|
else if (read == 0)
|
|
{
|
|
systemMessage(MSG_FAILED_TO_READ_RTC,N_("Failed to read RTC from save game %s (continuing)"),
|
|
name);
|
|
res = false;
|
|
}
|
|
else
|
|
{
|
|
// Also checks if the battery file it bigger than gbRamSizeMask+1+RTC !
|
|
u8 data[1];
|
|
data[0] = 0;
|
|
|
|
read = gzread(gzFile,
|
|
data,
|
|
1);
|
|
if(read >0) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gbBatteryError = true;
|
|
res = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
gzclose(gzFile);
|
|
return res;
|
|
}
|
|
|
|
|
|
bool gbReadSaveMMM01(const char * name)
|
|
{
|
|
if (gbRam)
|
|
{
|
|
gzFile gzFile = gzopen(name, "rb");
|
|
|
|
if(gzFile == NULL) {
|
|
return false;
|
|
}
|
|
|
|
int read = gzread(gzFile,
|
|
gbRam,
|
|
(gbRamSizeMask+1));
|
|
|
|
if(read != (gbRamSizeMask+1)) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gzclose(gzFile);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
// Also checks if the battery file it bigger than gbRamSizeMask+1 !
|
|
u8 data[1];
|
|
data[0] = 0;
|
|
|
|
read = gzread(gzFile,
|
|
data,
|
|
1);
|
|
if(read >0) {
|
|
systemMessage(MSG_FAILED_TO_READ_SGM,
|
|
N_("Battery file's size incompatible with the rom settings %s (%d).\nWarning : save of the battery file is now disabled !"), name, read);
|
|
gzclose(gzFile);
|
|
gbBatteryError = true;
|
|
return false;
|
|
}
|
|
|
|
gzclose(gzFile);
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
void gbInit()
|
|
{
|
|
gbGenFilter();
|
|
gbSgbInit();
|
|
|
|
gbMemory = (u8 *)malloc(65536);
|
|
|
|
pix = (u8 *)calloc(1,4*257*226);
|
|
|
|
gbLineBuffer = (u16 *)malloc(160 * sizeof(u16));
|
|
}
|
|
|
|
bool gbWriteBatteryFile(const char *file, bool extendedSave)
|
|
{
|
|
if(gbBattery) {
|
|
switch(gbRomType) {
|
|
case 0x03:
|
|
gbWriteSaveMBC1(file);
|
|
break;
|
|
case 0x06:
|
|
gbWriteSaveMBC2(file);
|
|
break;
|
|
case 0x0d:
|
|
gbWriteSaveMMM01(file);
|
|
break;
|
|
case 0x0f:
|
|
case 0x10:
|
|
gbWriteSaveMBC3(file, extendedSave);
|
|
break;
|
|
case 0x13:
|
|
case 0xfc:
|
|
gbWriteSaveMBC3(file, false);
|
|
case 0x1b:
|
|
case 0x1e:
|
|
gbWriteSaveMBC5(file);
|
|
break;
|
|
case 0x22:
|
|
gbWriteSaveMBC7(file);
|
|
break;
|
|
case 0xfd:
|
|
gbWriteSaveTAMA5(file, extendedSave);
|
|
break;
|
|
case 0xff:
|
|
gbWriteSaveMBC1(file);
|
|
break;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool gbWriteBatteryFile(const char *file)
|
|
{
|
|
if (!gbBatteryError)
|
|
{
|
|
gbWriteBatteryFile(file, true);
|
|
return true;
|
|
}
|
|
else return false;
|
|
}
|
|
|
|
bool gbReadBatteryFile(const char *file)
|
|
{
|
|
bool res = false;
|
|
if(gbBattery) {
|
|
switch(gbRomType) {
|
|
case 0x03:
|
|
res = gbReadSaveMBC1(file);
|
|
break;
|
|
case 0x06:
|
|
res = gbReadSaveMBC2(file);
|
|
break;
|
|
case 0x0d:
|
|
res = gbReadSaveMMM01(file);
|
|
break;
|
|
case 0x0f:
|
|
case 0x10:
|
|
if(!gbReadSaveMBC3(file)) {
|
|
time(&gbDataMBC3.mapperLastTime);
|
|
struct tm *lt;
|
|
lt = localtime(&gbDataMBC3.mapperLastTime);
|
|
gbDataMBC3.mapperSeconds = lt->tm_sec;
|
|
gbDataMBC3.mapperMinutes = lt->tm_min;
|
|
gbDataMBC3.mapperHours = lt->tm_hour;
|
|
gbDataMBC3.mapperDays = lt->tm_yday & 255;
|
|
gbDataMBC3.mapperControl = (gbDataMBC3.mapperControl & 0xfe) |
|
|
(lt->tm_yday > 255 ? 1: 0);
|
|
res = false;
|
|
break;
|
|
}
|
|
res = true;
|
|
break;
|
|
case 0x13:
|
|
case 0xfc:
|
|
res = gbReadSaveMBC3(file);
|
|
break;
|
|
case 0x1b:
|
|
case 0x1e:
|
|
res = gbReadSaveMBC5(file);
|
|
break;
|
|
case 0x22:
|
|
res = gbReadSaveMBC7(file);
|
|
break;
|
|
case 0xfd:
|
|
if(!gbReadSaveTAMA5(file)) {
|
|
u8 gbDaysinMonth [12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
|
|
time(&gbDataTAMA5.mapperLastTime);
|
|
struct tm *lt;
|
|
lt = localtime(&gbDataTAMA5.mapperLastTime);
|
|
gbDataTAMA5.mapperSeconds = lt->tm_sec;
|
|
gbDataTAMA5.mapperMinutes = lt->tm_min;
|
|
gbDataTAMA5.mapperHours = lt->tm_hour;
|
|
gbDataTAMA5.mapperDays = 1;
|
|
gbDataTAMA5.mapperMonths = 1;
|
|
gbDataTAMA5.mapperYears = 1970;
|
|
int days = lt->tm_yday+365*3;
|
|
while (days)
|
|
{
|
|
gbDataTAMA5.mapperDays++;
|
|
days--;
|
|
if (gbDataTAMA5.mapperDays>gbDaysinMonth[gbDataTAMA5.mapperMonths-1])
|
|
{
|
|
gbDataTAMA5.mapperDays = 1;
|
|
gbDataTAMA5.mapperMonths++;
|
|
if (gbDataTAMA5.mapperMonths>12)
|
|
{
|
|
gbDataTAMA5.mapperMonths = 1;
|
|
gbDataTAMA5.mapperYears++;
|
|
if ((gbDataTAMA5.mapperYears & 3) == 0)
|
|
gbDaysinMonth[1] = 29;
|
|
else
|
|
gbDaysinMonth[1] = 28;
|
|
}
|
|
}
|
|
}
|
|
gbDataTAMA5.mapperControl = (gbDataTAMA5.mapperControl & 0xfe) |
|
|
(lt->tm_yday > 255 ? 1: 0);
|
|
res = false;
|
|
break;
|
|
}
|
|
res = true;
|
|
break;
|
|
case 0xff:
|
|
res = gbReadSaveMBC1(file);
|
|
break;
|
|
}
|
|
}
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
return res;
|
|
}
|
|
|
|
bool gbReadGSASnapshot(const char *fileName)
|
|
{
|
|
FILE *file = fopen(fileName, "rb");
|
|
|
|
if(!file) {
|
|
systemMessage(MSG_CANNOT_OPEN_FILE, N_("Cannot open file %s"), fileName);
|
|
return false;
|
|
}
|
|
|
|
fseek(file, 0x4, SEEK_SET);
|
|
char buffer[16];
|
|
char buffer2[16];
|
|
fread(buffer, 1, 15, file);
|
|
buffer[15] = 0;
|
|
memcpy(buffer2, &gbRom[0x134], 15);
|
|
buffer2[15] = 0;
|
|
if(memcmp(buffer, buffer2, 15)) {
|
|
systemMessage(MSG_CANNOT_IMPORT_SNAPSHOT_FOR,
|
|
N_("Cannot import snapshot for %s. Current game is %s"),
|
|
buffer,
|
|
buffer2);
|
|
fclose(file);
|
|
return false;
|
|
}
|
|
fseek(file, 0x13, SEEK_SET);
|
|
size_t read = 0;
|
|
int toRead = 0;
|
|
switch(gbRomType) {
|
|
case 0x03:
|
|
case 0x0f:
|
|
case 0x10:
|
|
case 0x13:
|
|
case 0x1b:
|
|
case 0x1e:
|
|
case 0xff:
|
|
read = fread(gbRam, 1, (gbRamSizeMask+1), file);
|
|
toRead = (gbRamSizeMask+1);
|
|
break;
|
|
case 0x06:
|
|
case 0x22:
|
|
read = fread(&gbMemory[0xa000],1,256,file);
|
|
toRead = 256;
|
|
break;
|
|
default:
|
|
systemMessage(MSG_UNSUPPORTED_SNAPSHOT_FILE,
|
|
N_("Unsupported snapshot file %s"),
|
|
fileName);
|
|
fclose(file);
|
|
return false;
|
|
}
|
|
fclose(file);
|
|
gbReset();
|
|
return true;
|
|
}
|
|
|
|
variable_desc gbSaveGameStruct[] = {
|
|
{ &PC.W, sizeof(u16) },
|
|
{ &SP.W, sizeof(u16) },
|
|
{ &AF.W, sizeof(u16) },
|
|
{ &BC.W, sizeof(u16) },
|
|
{ &DE.W, sizeof(u16) },
|
|
{ &HL.W, sizeof(u16) },
|
|
{ &IFF, sizeof(u8) },
|
|
{ &GBLCD_MODE_0_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBLCD_MODE_1_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBLCD_MODE_2_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBLCD_MODE_3_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBDIV_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBLY_INCREMENT_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBTIMER_MODE_0_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBTIMER_MODE_1_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBTIMER_MODE_2_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBTIMER_MODE_3_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBSERIAL_CLOCK_TICKS, sizeof(int) },
|
|
{ &GBSYNCHRONIZE_CLOCK_TICKS, sizeof(int) },
|
|
{ &gbDivTicks, sizeof(int) },
|
|
{ &gbLcdMode, sizeof(int) },
|
|
{ &gbLcdTicks, sizeof(int) },
|
|
{ &gbLcdLYIncrementTicks, sizeof(int) },
|
|
{ &gbTimerTicks, sizeof(int) },
|
|
{ &gbTimerClockTicks, sizeof(int) },
|
|
{ &gbSerialTicks, sizeof(int) },
|
|
{ &gbSerialBits, sizeof(int) },
|
|
{ &gbInt48Signal, sizeof(int) },
|
|
{ &gbInterruptWait, sizeof(int) },
|
|
{ &gbSynchronizeTicks, sizeof(int) },
|
|
{ &gbTimerOn, sizeof(int) },
|
|
{ &gbTimerMode, sizeof(int) },
|
|
{ &gbSerialOn, sizeof(int) },
|
|
{ &gbWindowLine, sizeof(int) },
|
|
{ &gbCgbMode, sizeof(int) },
|
|
{ &gbVramBank, sizeof(int) },
|
|
{ &gbWramBank, sizeof(int) },
|
|
{ &gbHdmaSource, sizeof(int) },
|
|
{ &gbHdmaDestination, sizeof(int) },
|
|
{ &gbHdmaBytes, sizeof(int) },
|
|
{ &gbHdmaOn, sizeof(int) },
|
|
{ &gbSpeed, sizeof(int) },
|
|
{ &gbSgbMode, sizeof(int) },
|
|
{ ®ister_DIV, sizeof(u8) },
|
|
{ ®ister_TIMA, sizeof(u8) },
|
|
{ ®ister_TMA, sizeof(u8) },
|
|
{ ®ister_TAC, sizeof(u8) },
|
|
{ ®ister_IF, sizeof(u8) },
|
|
{ ®ister_LCDC, sizeof(u8) },
|
|
{ ®ister_STAT, sizeof(u8) },
|
|
{ ®ister_SCY, sizeof(u8) },
|
|
{ ®ister_SCX, sizeof(u8) },
|
|
{ ®ister_LY, sizeof(u8) },
|
|
{ ®ister_LYC, sizeof(u8) },
|
|
{ ®ister_DMA, sizeof(u8) },
|
|
{ ®ister_WY, sizeof(u8) },
|
|
{ ®ister_WX, sizeof(u8) },
|
|
{ ®ister_VBK, sizeof(u8) },
|
|
{ ®ister_HDMA1, sizeof(u8) },
|
|
{ ®ister_HDMA2, sizeof(u8) },
|
|
{ ®ister_HDMA3, sizeof(u8) },
|
|
{ ®ister_HDMA4, sizeof(u8) },
|
|
{ ®ister_HDMA5, sizeof(u8) },
|
|
{ ®ister_SVBK, sizeof(u8) },
|
|
{ ®ister_IE , sizeof(u8) },
|
|
{ &gbBgp[0], sizeof(u8) },
|
|
{ &gbBgp[1], sizeof(u8) },
|
|
{ &gbBgp[2], sizeof(u8) },
|
|
{ &gbBgp[3], sizeof(u8) },
|
|
{ &gbObp0[0], sizeof(u8) },
|
|
{ &gbObp0[1], sizeof(u8) },
|
|
{ &gbObp0[2], sizeof(u8) },
|
|
{ &gbObp0[3], sizeof(u8) },
|
|
{ &gbObp1[0], sizeof(u8) },
|
|
{ &gbObp1[1], sizeof(u8) },
|
|
{ &gbObp1[2], sizeof(u8) },
|
|
{ &gbObp1[3], sizeof(u8) },
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
|
|
static bool gbWriteSaveState(gzFile gzFile)
|
|
{
|
|
|
|
utilWriteInt(gzFile, GBSAVE_GAME_VERSION);
|
|
|
|
utilGzWrite(gzFile, &gbRom[0x134], 15);
|
|
|
|
utilWriteInt(gzFile, useBios);
|
|
utilWriteInt(gzFile, inBios);
|
|
|
|
utilWriteData(gzFile, gbSaveGameStruct);
|
|
|
|
utilGzWrite(gzFile, &IFF, 2);
|
|
|
|
if(gbSgbMode) {
|
|
gbSgbSaveGame(gzFile);
|
|
}
|
|
|
|
utilGzWrite(gzFile, &gbDataMBC1, sizeof(gbDataMBC1));
|
|
utilGzWrite(gzFile, &gbDataMBC2, sizeof(gbDataMBC2));
|
|
utilGzWrite(gzFile, &gbDataMBC3, sizeof(gbDataMBC3));
|
|
utilGzWrite(gzFile, &gbDataMBC5, sizeof(gbDataMBC5));
|
|
utilGzWrite(gzFile, &gbDataHuC1, sizeof(gbDataHuC1));
|
|
utilGzWrite(gzFile, &gbDataHuC3, sizeof(gbDataHuC3));
|
|
utilGzWrite(gzFile, &gbDataTAMA5, sizeof(gbDataTAMA5));
|
|
if (gbTAMA5ram != NULL)
|
|
utilGzWrite(gzFile, gbTAMA5ram, gbTAMA5ramSize);
|
|
utilGzWrite(gzFile, &gbDataMMM01, sizeof(gbDataMMM01));
|
|
|
|
utilGzWrite(gzFile, gbPalette, 128 * sizeof(u16));
|
|
|
|
utilGzWrite(gzFile, &gbMemory[0x8000], 0x8000);
|
|
|
|
if(gbRamSize && gbRam) {
|
|
utilWriteInt(gzFile, gbRamSize);
|
|
utilGzWrite(gzFile, gbRam, gbRamSize);
|
|
}
|
|
|
|
if(gbCgbMode) {
|
|
utilGzWrite(gzFile, gbVram, 0x4000);
|
|
utilGzWrite(gzFile, gbWram, 0x8000);
|
|
}
|
|
|
|
gbSoundSaveGame(gzFile);
|
|
|
|
gbCheatsSaveGame(gzFile);
|
|
|
|
utilWriteInt(gzFile, gbLcdModeDelayed);
|
|
utilWriteInt(gzFile, gbLcdTicksDelayed);
|
|
utilWriteInt(gzFile, gbLcdLYIncrementTicksDelayed);
|
|
utilWriteInt(gzFile, gbSpritesTicks[299]);
|
|
utilWriteInt(gzFile, gbTimerModeChange);
|
|
utilWriteInt(gzFile, gbTimerOnChange);
|
|
utilWriteInt(gzFile, gbHardware);
|
|
utilWriteInt(gzFile, gbBlackScreen);
|
|
utilWriteInt(gzFile, oldRegister_WY);
|
|
utilWriteInt(gzFile, gbWindowLine);
|
|
utilWriteInt(gzFile, inUseRegister_WY);
|
|
utilWriteInt(gzFile, gbScreenOn);
|
|
utilWriteInt(gzFile, 0x12345678); // end marker
|
|
return true;
|
|
}
|
|
|
|
bool gbWriteMemSaveState(char *memory, int available)
|
|
{
|
|
gzFile gzFile = utilMemGzOpen(memory, available, "w");
|
|
|
|
if(gzFile == NULL) {
|
|
return false;
|
|
}
|
|
|
|
bool res = gbWriteSaveState(gzFile);
|
|
|
|
long pos = utilGzMemTell(gzFile)+8;
|
|
|
|
if(pos >= (available))
|
|
res = false;
|
|
|
|
utilGzClose(gzFile);
|
|
|
|
return res;
|
|
}
|
|
|
|
bool gbWriteSaveState(const char *name)
|
|
{
|
|
gzFile gzFile = utilGzOpen(name,"wb");
|
|
|
|
if(gzFile == NULL)
|
|
return false;
|
|
|
|
bool res = gbWriteSaveState(gzFile);
|
|
|
|
utilGzClose(gzFile);
|
|
return res;
|
|
}
|
|
|
|
static bool gbReadSaveState(gzFile gzFile)
|
|
{
|
|
int version = utilReadInt(gzFile);
|
|
|
|
if(version > GBSAVE_GAME_VERSION || version < 0) {
|
|
systemMessage(MSG_UNSUPPORTED_VB_SGM,
|
|
N_("Unsupported VisualBoy save game version %d"), version);
|
|
return false;
|
|
}
|
|
|
|
u8 romname[20];
|
|
|
|
utilGzRead(gzFile, romname, 15);
|
|
|
|
if(memcmp(&gbRom[0x134], romname, 15) != 0) {
|
|
systemMessage(MSG_CANNOT_LOAD_SGM_FOR,
|
|
N_("Cannot load save game for %s. Playing %s"),
|
|
romname, &gbRom[0x134]);
|
|
return false;
|
|
}
|
|
|
|
|
|
bool ub = false;
|
|
bool ib = false;
|
|
|
|
if (version >= 11)
|
|
{
|
|
ub = utilReadInt(gzFile) ? true : false;
|
|
ib = utilReadInt(gzFile) ? true : false;
|
|
|
|
if((ub != useBios) && (ib)) {
|
|
if(useBios)
|
|
systemMessage(MSG_SAVE_GAME_NOT_USING_BIOS,
|
|
N_("Save game is not using the BIOS files"));
|
|
else
|
|
systemMessage(MSG_SAVE_GAME_USING_BIOS,
|
|
N_("Save game is using the BIOS file"));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
gbReset();
|
|
|
|
inBios = ib;
|
|
|
|
utilReadData(gzFile, gbSaveGameStruct);
|
|
|
|
|
|
// Correct crash when loading color gameboy save in regular gameboy type.
|
|
if (!gbCgbMode)
|
|
{
|
|
if(gbVram != NULL) {
|
|
free(gbVram);
|
|
gbVram = NULL;
|
|
}
|
|
if(gbWram != NULL) {
|
|
free(gbWram);
|
|
gbWram = NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(gbVram == NULL)
|
|
gbVram = (u8 *)malloc(0x4000);
|
|
if(gbWram == NULL)
|
|
gbWram = (u8 *)malloc(0x8000);
|
|
memset(gbVram,0,0x4000);
|
|
memset(gbPalette,0, 2*128);
|
|
}
|
|
|
|
|
|
|
|
if(version >= GBSAVE_GAME_VERSION_7) {
|
|
utilGzRead(gzFile, &IFF, 2);
|
|
}
|
|
|
|
if(gbSgbMode) {
|
|
gbSgbReadGame(gzFile, version);
|
|
} else {
|
|
gbSgbMask = 0; // loading a game at the wrong time causes no display
|
|
}
|
|
if (version<11)
|
|
utilGzRead(gzFile, &gbDataMBC1, sizeof(gbDataMBC1) - sizeof(int));
|
|
else
|
|
utilGzRead(gzFile, &gbDataMBC1, sizeof(gbDataMBC1));
|
|
utilGzRead(gzFile, &gbDataMBC2, sizeof(gbDataMBC2));
|
|
if(version < GBSAVE_GAME_VERSION_4)
|
|
// prior to version 4, there was no adjustment for the time the game
|
|
// was last played, so we have less to read. This needs update if the
|
|
// structure changes again.
|
|
utilGzRead(gzFile, &gbDataMBC3, sizeof(gbDataMBC3)-sizeof(time_t));
|
|
else
|
|
utilGzRead(gzFile, &gbDataMBC3, sizeof(gbDataMBC3));
|
|
utilGzRead(gzFile, &gbDataMBC5, sizeof(gbDataMBC5));
|
|
utilGzRead(gzFile, &gbDataHuC1, sizeof(gbDataHuC1));
|
|
utilGzRead(gzFile, &gbDataHuC3, sizeof(gbDataHuC3));
|
|
if(version>=11)
|
|
{
|
|
utilGzRead(gzFile, &gbDataTAMA5, sizeof(gbDataTAMA5));
|
|
if(gbTAMA5ram != NULL) {
|
|
if(skipSaveGameBattery) {
|
|
utilGzSeek(gzFile, gbTAMA5ramSize, SEEK_CUR);
|
|
} else {
|
|
utilGzRead(gzFile, gbTAMA5ram, gbTAMA5ramSize);
|
|
}
|
|
}
|
|
utilGzRead(gzFile, &gbDataMMM01, sizeof(gbDataMMM01));
|
|
}
|
|
|
|
if(version < GBSAVE_GAME_VERSION_5) {
|
|
utilGzRead(gzFile, pix, 256*224*sizeof(u16));
|
|
}
|
|
memset(pix, 0, 257*226*sizeof(u32));
|
|
|
|
if(version < GBSAVE_GAME_VERSION_6) {
|
|
utilGzRead(gzFile, gbPalette, 64 * sizeof(u16));
|
|
} else
|
|
utilGzRead(gzFile, gbPalette, 128 * sizeof(u16));
|
|
|
|
if (version < 11)
|
|
utilGzRead(gzFile, gbPalette, 128 * sizeof(u16));
|
|
|
|
if(version < GBSAVE_GAME_VERSION_10) {
|
|
if(!gbCgbMode && !gbSgbMode) {
|
|
for(int i = 0; i < 8; i++)
|
|
gbPalette[i] = systemGbPalette[gbPaletteOption*8+i];
|
|
}
|
|
}
|
|
|
|
utilGzRead(gzFile, &gbMemory[0x8000], 0x8000);
|
|
|
|
if(gbRamSize && gbRam) {
|
|
if(version < 11)
|
|
if(skipSaveGameBattery) {
|
|
utilGzSeek(gzFile, gbRamSize, SEEK_CUR); //skip
|
|
} else {
|
|
utilGzRead(gzFile, gbRam, gbRamSize); //read
|
|
}
|
|
else
|
|
{
|
|
int ramSize = utilReadInt(gzFile);
|
|
if(skipSaveGameBattery) {
|
|
utilGzSeek(gzFile, (gbRamSize>ramSize) ? ramSize : gbRamSize, SEEK_CUR); //skip
|
|
} else {
|
|
utilGzRead(gzFile, gbRam, (gbRamSize>ramSize) ? ramSize : gbRamSize); //read
|
|
}
|
|
if(ramSize>gbRamSize)
|
|
utilGzSeek(gzFile,ramSize-gbRamSize,SEEK_CUR);
|
|
}
|
|
}
|
|
|
|
memset(gbSCYLine, register_SCY, sizeof(gbSCYLine));
|
|
memset(gbSCXLine, register_SCX, sizeof(gbSCXLine));
|
|
memset(gbBgpLine, (gbBgp[0] | (gbBgp[1]<<2) | (gbBgp[2]<<4) |
|
|
(gbBgp[3]<<6)), sizeof(gbBgpLine));
|
|
memset(gbObp0Line, (gbObp0[0] | (gbObp0[1]<<2) | (gbObp0[2]<<4) |
|
|
(gbObp0[3]<<6)), sizeof(gbObp0Line));
|
|
memset(gbObp1Line, (gbObp1[0] | (gbObp1[1]<<2) | (gbObp1[2]<<4) |
|
|
(gbObp1[3]<<6)), sizeof(gbObp1Line));
|
|
memset(gbSpritesTicks, 0x0, sizeof(gbSpritesTicks));
|
|
|
|
if (inBios)
|
|
{
|
|
gbMemoryMap[0x00] = &gbMemory[0x0000];
|
|
memcpy ((u8 *)(gbMemory), (u8 *)(gbRom), 0x1000);
|
|
memcpy ((u8 *)(gbMemory), (u8 *)(bios), 0x100);
|
|
}
|
|
else
|
|
gbMemoryMap[0x00] = &gbRom[0x0000];
|
|
gbMemoryMap[0x01] = &gbRom[0x1000];
|
|
gbMemoryMap[0x02] = &gbRom[0x2000];
|
|
gbMemoryMap[0x03] = &gbRom[0x3000];
|
|
gbMemoryMap[0x04] = &gbRom[0x4000];
|
|
gbMemoryMap[0x05] = &gbRom[0x5000];
|
|
gbMemoryMap[0x06] = &gbRom[0x6000];
|
|
gbMemoryMap[0x07] = &gbRom[0x7000];
|
|
gbMemoryMap[0x08] = &gbMemory[0x8000];
|
|
gbMemoryMap[0x09] = &gbMemory[0x9000];
|
|
gbMemoryMap[0x0a] = &gbMemory[0xa000];
|
|
gbMemoryMap[0x0b] = &gbMemory[0xb000];
|
|
gbMemoryMap[0x0c] = &gbMemory[0xc000];
|
|
gbMemoryMap[0x0d] = &gbMemory[0xd000];
|
|
gbMemoryMap[0x0e] = &gbMemory[0xe000];
|
|
gbMemoryMap[0x0f] = &gbMemory[0xf000];
|
|
|
|
switch(gbRomType) {
|
|
case 0x00:
|
|
case 0x01:
|
|
case 0x02:
|
|
case 0x03:
|
|
// MBC 1
|
|
memoryUpdateMapMBC1();
|
|
break;
|
|
case 0x05:
|
|
case 0x06:
|
|
// MBC2
|
|
memoryUpdateMapMBC2();
|
|
break;
|
|
case 0x0b:
|
|
case 0x0c:
|
|
case 0x0d:
|
|
// MMM01
|
|
memoryUpdateMapMMM01();
|
|
break;
|
|
case 0x0f:
|
|
case 0x10:
|
|
case 0x11:
|
|
case 0x12:
|
|
case 0x13:
|
|
// MBC 3
|
|
memoryUpdateMapMBC3();
|
|
break;
|
|
case 0x19:
|
|
case 0x1a:
|
|
case 0x1b:
|
|
// MBC5
|
|
memoryUpdateMapMBC5();
|
|
break;
|
|
case 0x1c:
|
|
case 0x1d:
|
|
case 0x1e:
|
|
// MBC 5 Rumble
|
|
memoryUpdateMapMBC5();
|
|
break;
|
|
case 0x22:
|
|
// MBC 7
|
|
memoryUpdateMapMBC7();
|
|
break;
|
|
case 0x56:
|
|
// GS3
|
|
memoryUpdateMapGS3();
|
|
break;
|
|
case 0xfd:
|
|
// TAMA5
|
|
memoryUpdateMapTAMA5();
|
|
break;
|
|
case 0xfe:
|
|
// HuC3
|
|
memoryUpdateMapHuC3();
|
|
break;
|
|
case 0xff:
|
|
// HuC1
|
|
memoryUpdateMapHuC1();
|
|
break;
|
|
}
|
|
|
|
if(gbCgbMode) {
|
|
utilGzRead(gzFile, gbVram, 0x4000);
|
|
utilGzRead(gzFile, gbWram, 0x8000);
|
|
|
|
int value = register_SVBK;
|
|
if(value == 0)
|
|
value = 1;
|
|
|
|
gbMemoryMap[0x08] = &gbVram[register_VBK * 0x2000];
|
|
gbMemoryMap[0x09] = &gbVram[register_VBK * 0x2000 + 0x1000];
|
|
gbMemoryMap[0x0d] = &gbWram[value * 0x1000];
|
|
}
|
|
|
|
gbSoundReadGame(version, gzFile);
|
|
|
|
if (gbCgbMode && gbSgbMode) {
|
|
gbSgbMode = 0;
|
|
}
|
|
|
|
if(gbBorderOn && !gbSgbMask) {
|
|
gbSgbRenderBorder();
|
|
}
|
|
|
|
systemDrawScreen();
|
|
|
|
if(version > GBSAVE_GAME_VERSION_1)
|
|
{
|
|
if( skipSaveGameCheats ) {
|
|
gbCheatsReadGameSkip(gzFile, version);
|
|
} else {
|
|
gbCheatsReadGame(gzFile, version);
|
|
}
|
|
}
|
|
|
|
if (version<11)
|
|
{
|
|
gbWriteMemory(0xff00, 0);
|
|
gbMemory[0xff04] = register_DIV;
|
|
gbMemory[0xff05] = register_TIMA;
|
|
gbMemory[0xff06] = register_TMA;
|
|
gbMemory[0xff07] = register_TAC;
|
|
gbMemory[0xff40] = register_LCDC;
|
|
gbMemory[0xff42] = register_SCY;
|
|
gbMemory[0xff43] = register_SCX;
|
|
gbMemory[0xff44] = register_LY;
|
|
gbMemory[0xff45] = register_LYC;
|
|
gbMemory[0xff46] = register_DMA;
|
|
gbMemory[0xff4a] = register_WY;
|
|
gbMemory[0xff4b] = register_WX;
|
|
gbMemory[0xff4f] = register_VBK;
|
|
gbMemory[0xff51] = register_HDMA1;
|
|
gbMemory[0xff52] = register_HDMA2;
|
|
gbMemory[0xff53] = register_HDMA3;
|
|
gbMemory[0xff54] = register_HDMA4;
|
|
gbMemory[0xff55] = register_HDMA5;
|
|
gbMemory[0xff70] = register_SVBK;
|
|
gbMemory[0xffff] = register_IE;
|
|
GBDIV_CLOCK_TICKS = 64;
|
|
|
|
if (gbSpeed)
|
|
gbDivTicks /=2;
|
|
|
|
if ((gbLcdMode == 0) && (register_STAT & 8))
|
|
gbInt48Signal |= 1;
|
|
if ((gbLcdMode == 1) && (register_STAT & 0x10))
|
|
gbInt48Signal |= 2;
|
|
if ((gbLcdMode == 2) && (register_STAT & 0x20))
|
|
gbInt48Signal |= 4;
|
|
if ((register_LY==register_LYC) && (register_STAT & 0x40))
|
|
gbInt48Signal |= 8;
|
|
|
|
gbLcdLYIncrementTicks = GBLY_INCREMENT_CLOCK_TICKS;
|
|
|
|
if (gbLcdMode == 2)
|
|
gbLcdLYIncrementTicks-=GBLCD_MODE_2_CLOCK_TICKS-gbLcdTicks;
|
|
else if (gbLcdMode == 3)
|
|
gbLcdLYIncrementTicks -=GBLCD_MODE_2_CLOCK_TICKS+GBLCD_MODE_3_CLOCK_TICKS-gbLcdTicks;
|
|
else if (gbLcdMode == 0)
|
|
gbLcdLYIncrementTicks =gbLcdTicks;
|
|
else if (gbLcdMode == 1)
|
|
{
|
|
gbLcdLYIncrementTicks = gbLcdTicks % GBLY_INCREMENT_CLOCK_TICKS;
|
|
if (register_LY == 0x99)
|
|
gbLcdLYIncrementTicks =gbLine99Ticks;
|
|
else if (register_LY == 0)
|
|
gbLcdLYIncrementTicks += GBLY_INCREMENT_CLOCK_TICKS;
|
|
}
|
|
|
|
gbLcdModeDelayed = gbLcdMode;
|
|
gbLcdTicksDelayed = gbLcdTicks--;
|
|
gbLcdLYIncrementTicksDelayed = gbLcdLYIncrementTicks--;
|
|
gbInterruptWait = 0;
|
|
memset(gbSpritesTicks,0,sizeof(gbSpritesTicks));
|
|
}
|
|
else
|
|
{
|
|
gbLcdModeDelayed = utilReadInt(gzFile);
|
|
gbLcdTicksDelayed = utilReadInt(gzFile);
|
|
gbLcdLYIncrementTicksDelayed = utilReadInt(gzFile);
|
|
gbSpritesTicks[299] = utilReadInt(gzFile) & 0xff;
|
|
gbTimerModeChange = (utilReadInt(gzFile) ? true : false);
|
|
gbTimerOnChange = (utilReadInt(gzFile) ? true : false);
|
|
gbHardware = utilReadInt(gzFile);
|
|
gbBlackScreen = (utilReadInt(gzFile) ? true : false);
|
|
oldRegister_WY = utilReadInt(gzFile);
|
|
gbWindowLine = utilReadInt(gzFile);
|
|
inUseRegister_WY = utilReadInt(gzFile);
|
|
gbScreenOn = (utilReadInt(gzFile) ? true : false);
|
|
}
|
|
|
|
if (gbSpeed)
|
|
gbLine99Ticks *= 2;
|
|
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
|
|
if ( version >= 12 && utilReadInt( gzFile ) != 0x12345678 )
|
|
assert( false ); // fails if something read too much/little from file
|
|
|
|
return true;
|
|
}
|
|
|
|
bool gbReadMemSaveState(char *memory, int available)
|
|
{
|
|
gzFile gzFile = utilMemGzOpen(memory, available, "r");
|
|
|
|
bool res = gbReadSaveState(gzFile);
|
|
|
|
utilGzClose(gzFile);
|
|
|
|
return res;
|
|
}
|
|
|
|
bool gbReadSaveState(const char *name)
|
|
{
|
|
gzFile gzFile = utilGzOpen(name,"rb");
|
|
|
|
if(gzFile == NULL) {
|
|
return false;
|
|
}
|
|
|
|
bool res = gbReadSaveState(gzFile);
|
|
|
|
utilGzClose(gzFile);
|
|
|
|
return res;
|
|
}
|
|
|
|
bool gbWritePNGFile(const char *fileName)
|
|
{
|
|
/* if(gbBorderOn)
|
|
return utilWritePNGFile(fileName, 256, 224, pix);
|
|
return utilWritePNGFile(fileName, 160, 144, pix);*/
|
|
return false;
|
|
}
|
|
|
|
bool gbWriteBMPFile(const char *fileName)
|
|
{
|
|
/* if(gbBorderOn)
|
|
return utilWriteBMPFile(fileName, 256, 224, pix);
|
|
return utilWriteBMPFile(fileName, 160, 144, pix);*/
|
|
return false;
|
|
}
|
|
|
|
void gbCleanUp()
|
|
{
|
|
if(gbRam != NULL) {
|
|
free(gbRam);
|
|
gbRam = NULL;
|
|
}
|
|
|
|
if(gbRom != NULL) {
|
|
free(gbRom);
|
|
gbRom = NULL;
|
|
}
|
|
|
|
if(bios != NULL) {
|
|
free(bios);
|
|
bios = NULL;
|
|
}
|
|
|
|
if(gbMemory != NULL) {
|
|
free(gbMemory);
|
|
gbMemory = NULL;
|
|
}
|
|
|
|
if(gbLineBuffer != NULL) {
|
|
free(gbLineBuffer);
|
|
gbLineBuffer = NULL;
|
|
}
|
|
|
|
if(pix != NULL) {
|
|
free(pix);
|
|
pix = NULL;
|
|
}
|
|
|
|
gbSgbShutdown();
|
|
|
|
if(gbVram != NULL) {
|
|
free(gbVram);
|
|
gbVram = NULL;
|
|
}
|
|
|
|
if(gbWram != NULL) {
|
|
free(gbWram);
|
|
gbWram = NULL;
|
|
}
|
|
|
|
if(gbTAMA5ram != NULL) {
|
|
free(gbTAMA5ram);
|
|
gbTAMA5ram = NULL;
|
|
}
|
|
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
}
|
|
|
|
bool gbLoadRom(const char *szFile)
|
|
{
|
|
int size = 0;
|
|
|
|
if(gbRom != NULL) {
|
|
gbCleanUp();
|
|
}
|
|
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
|
|
/* gbRom = utilLoad(szFile,
|
|
utilIsGBImage,
|
|
NULL,
|
|
size);*/
|
|
if(!gbRom)
|
|
return false;
|
|
|
|
gbRomSize = size;
|
|
|
|
gbBatteryError = false;
|
|
|
|
if(bios != NULL) {
|
|
free(bios);
|
|
bios = NULL;
|
|
}
|
|
bios = (u8 *)calloc(1,0x100);
|
|
|
|
return gbUpdateSizes();
|
|
}
|
|
|
|
bool gbUpdateSizes()
|
|
{
|
|
if(gbRom[0x148] > 8) {
|
|
systemMessage(MSG_UNSUPPORTED_ROM_SIZE,
|
|
N_("Unsupported rom size %02x"), gbRom[0x148]);
|
|
return false;
|
|
}
|
|
|
|
if(gbRomSize < gbRomSizes[gbRom[0x148]]) {
|
|
gbRom = (u8 *)realloc(gbRom, gbRomSizes[gbRom[0x148]]);
|
|
for (int i = gbRomSize; i<gbRomSizes[gbRom[0x148]]; i++)
|
|
gbRom[i] = 0x00; // Not sure if it's 0x00, 0xff or random data...
|
|
}
|
|
// (it's in the case a cart is 'lying' on its size.
|
|
else if ((gbRomSize>gbRomSizes[gbRom[0x148]]) && (genericflashcardEnable))
|
|
{
|
|
gbRomSize = gbRomSize>>16;
|
|
gbRom[0x148] = 0;
|
|
if (gbRomSize)
|
|
{
|
|
while (!((gbRomSize & 1) || (gbRom[0x148] == 7)))
|
|
{
|
|
gbRom[0x148]++;
|
|
gbRomSize>>=1;
|
|
}
|
|
gbRom[0x148]++;
|
|
}
|
|
gbRom = (u8 *)realloc(gbRom, gbRomSizes[gbRom[0x148]]);
|
|
}
|
|
gbRomSize = gbRomSizes[gbRom[0x148]];
|
|
gbRomSizeMask = gbRomSizesMasks[gbRom[0x148]];
|
|
|
|
|
|
// The 'genericflashcard' option allows some PD to work.
|
|
// However, the setting is dangerous (if you let in enabled
|
|
// and play a normal game, it might just break everything).
|
|
// That's why it is not saved in the emulator options.
|
|
// Also I added some checks in VBA to make sure your saves will not be
|
|
// overwritten if you wrongly enable this option for a game
|
|
// you already played (and vice-versa, ie. if you forgot to
|
|
// enable the option for a game you played with it enabled, like Shawu Story).
|
|
u8 ramsize = genericflashcardEnable ? 5 : gbRom[0x149];
|
|
gbRom[0x149] = ramsize;
|
|
|
|
if ((gbRom[2] == 0x6D) && (gbRom[5] == 0x47) && (gbRom[6] == 0x65) && (gbRom[7] == 0x6E) &&
|
|
(gbRom[8] == 0x69) && (gbRom[9] == 0x65) && (gbRom[0xA] == 0x28) && (gbRom[0xB] == 0x54))
|
|
{
|
|
gbCheatingDevice = 1; // GameGenie
|
|
for (int i = 0; i < 0x20; i++) // Cleans GG hardware registers
|
|
gbRom[0x4000+i] = 0;
|
|
}
|
|
else if (((gbRom[0x104] == 0x44) && (gbRom[0x156] == 0xEA) && (gbRom[0x158] == 0x7F) &&
|
|
(gbRom[0x159] == 0xEA) && (gbRom[0x15B] == 0x7F)) || ((gbRom[0x165] == 0x3E) &&
|
|
(gbRom[0x166] == 0xD9) && (gbRom[0x16D] == 0xE1) && (gbRom[0x16E] == 0x7F)))
|
|
gbCheatingDevice = 2; // GameShark
|
|
else gbCheatingDevice = 0;
|
|
|
|
if(ramsize > 5) {
|
|
systemMessage(MSG_UNSUPPORTED_RAM_SIZE,
|
|
N_("Unsupported ram size %02x"), gbRom[0x149]);
|
|
return false;
|
|
}
|
|
|
|
gbRamSize = gbRamSizes[ramsize];
|
|
gbRamSizeMask = gbRamSizesMasks[ramsize];
|
|
|
|
gbRomType = gbRom[0x147];
|
|
if (genericflashcardEnable)
|
|
{
|
|
/*if (gbRomType<2)
|
|
gbRomType =3;
|
|
else if ((gbRomType == 0xc) || (gbRomType == 0xf) || (gbRomType == 0x12) ||
|
|
(gbRomType == 0x16) || (gbRomType == 0x1a) || (gbRomType == 0x1d))
|
|
gbRomType++;
|
|
else if ((gbRomType == 0xb) || (gbRomType == 0x11) || (gbRomType == 0x15) ||
|
|
(gbRomType == 0x19) || (gbRomType == 0x1c))
|
|
gbRomType+=2;
|
|
else if ((gbRomType == 0x5) || (gbRomType == 0x6))
|
|
gbRomType = 0x1a;*/
|
|
gbRomType = 0x1b;
|
|
}
|
|
else if (gbCheatingDevice == 1)
|
|
gbRomType = 0x55;
|
|
else if (gbCheatingDevice == 2)
|
|
gbRomType = 0x56;
|
|
|
|
gbRom[0x147] = gbRomType;
|
|
|
|
mapperReadRAM = NULL;
|
|
|
|
switch(gbRomType) {
|
|
case 0x00:
|
|
case 0x01:
|
|
case 0x02:
|
|
case 0x03:
|
|
case 0x08:
|
|
case 0x09:
|
|
// MBC 1
|
|
mapper = mapperMBC1ROM;
|
|
mapperRAM = mapperMBC1RAM;
|
|
mapperReadRAM = mapperMBC1ReadRAM;
|
|
break;
|
|
case 0x05:
|
|
case 0x06:
|
|
// MBC2
|
|
mapper = mapperMBC2ROM;
|
|
mapperRAM = mapperMBC2RAM;
|
|
gbRamSize = 0x200;
|
|
gbRamSizeMask = 0x1ff;
|
|
break;
|
|
case 0x0b:
|
|
case 0x0c:
|
|
case 0x0d:
|
|
// MMM01
|
|
mapper = mapperMMM01ROM;
|
|
mapperRAM = mapperMMM01RAM;
|
|
break;
|
|
case 0x0f:
|
|
case 0x10:
|
|
case 0x11:
|
|
case 0x12:
|
|
case 0x13:
|
|
case 0xfc:
|
|
// MBC 3
|
|
mapper = mapperMBC3ROM;
|
|
mapperRAM = mapperMBC3RAM;
|
|
mapperReadRAM = mapperMBC3ReadRAM;
|
|
break;
|
|
case 0x19:
|
|
case 0x1a:
|
|
case 0x1b:
|
|
// MBC5
|
|
mapper = mapperMBC5ROM;
|
|
mapperRAM = mapperMBC5RAM;
|
|
mapperReadRAM = mapperMBC5ReadRAM;
|
|
break;
|
|
case 0x1c:
|
|
case 0x1d:
|
|
case 0x1e:
|
|
// MBC 5 Rumble
|
|
mapper = mapperMBC5ROM;
|
|
mapperRAM = mapperMBC5RAM;
|
|
mapperReadRAM = mapperMBC5ReadRAM;
|
|
break;
|
|
case 0x22:
|
|
// MBC 7
|
|
mapper = mapperMBC7ROM;
|
|
mapperRAM = mapperMBC7RAM;
|
|
mapperReadRAM = mapperMBC7ReadRAM;
|
|
gbRamSize = 0x200;
|
|
gbRamSizeMask = 0x1ff;
|
|
break;
|
|
// GG (GameGenie)
|
|
case 0x55:
|
|
mapper = mapperGGROM;
|
|
break;
|
|
case 0x56:
|
|
// GS (GameShark)
|
|
mapper = mapperGS3ROM;
|
|
break;
|
|
case 0xfd:
|
|
// TAMA5
|
|
if (gbRam!= NULL)
|
|
{
|
|
free(gbRam);
|
|
gbRam = NULL;
|
|
}
|
|
|
|
ramsize = 3;
|
|
gbRamSize = gbRamSizes[3];
|
|
gbRamSizeMask = gbRamSizesMasks[3];
|
|
gbRamFill = 0x0;
|
|
|
|
gbTAMA5ramSize = 0x100;
|
|
|
|
if (gbTAMA5ram == NULL)
|
|
gbTAMA5ram = (u8 *)malloc(gbTAMA5ramSize);
|
|
memset(gbTAMA5ram, 0x0, gbTAMA5ramSize);
|
|
|
|
mapperRAM = mapperTAMA5RAM;
|
|
mapperReadRAM = mapperTAMA5ReadRAM;
|
|
mapperUpdateClock = memoryUpdateTAMA5Clock;
|
|
break;
|
|
case 0xfe:
|
|
// HuC3
|
|
mapper = mapperHuC3ROM;
|
|
mapperRAM = mapperHuC3RAM;
|
|
mapperReadRAM = mapperHuC3ReadRAM;
|
|
break;
|
|
case 0xff:
|
|
// HuC1
|
|
mapper = mapperHuC1ROM;
|
|
mapperRAM = mapperHuC1RAM;
|
|
break;
|
|
default:
|
|
systemMessage(MSG_UNKNOWN_CARTRIDGE_TYPE,
|
|
N_("Unknown cartridge type %02x"), gbRomType);
|
|
return false;
|
|
}
|
|
|
|
if(gbRamSize) {
|
|
gbRam = (u8 *)malloc(gbRamSize);
|
|
memset(gbRam, gbRamFill, gbRamSize);
|
|
}
|
|
|
|
switch(gbRomType) {
|
|
case 0x03:
|
|
case 0x06:
|
|
case 0x0f:
|
|
case 0x10:
|
|
case 0x13:
|
|
case 0x1b:
|
|
case 0x1d:
|
|
case 0x1e:
|
|
case 0x22:
|
|
case 0xfd:
|
|
case 0xff:
|
|
gbBattery = 1;
|
|
break;
|
|
}
|
|
|
|
gbInit();
|
|
|
|
//gbReset();
|
|
|
|
switch(gbRomType) {
|
|
case 0x1c:
|
|
case 0x1d:
|
|
case 0x1e:
|
|
gbDataMBC5.isRumbleCartridge = 1;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int gbGetNextEvent (int clockTicks)
|
|
{
|
|
if (register_LCDC & 0x80)
|
|
{
|
|
if(gbLcdTicks < clockTicks)
|
|
clockTicks = gbLcdTicks;
|
|
|
|
if(gbLcdTicksDelayed < clockTicks)
|
|
clockTicks = gbLcdTicksDelayed;
|
|
|
|
if(gbLcdLYIncrementTicksDelayed < clockTicks)
|
|
clockTicks = gbLcdLYIncrementTicksDelayed;
|
|
}
|
|
|
|
if(gbLcdLYIncrementTicks < clockTicks)
|
|
clockTicks = gbLcdLYIncrementTicks;
|
|
|
|
if(gbSerialOn && (gbSerialTicks < clockTicks))
|
|
clockTicks = gbSerialTicks;
|
|
|
|
if(gbTimerOn && (((gbInternalTimer) & gbTimerMask[gbTimerMode])+1 < clockTicks))
|
|
clockTicks = ((gbInternalTimer) & gbTimerMask[gbTimerMode])+1;
|
|
|
|
//if(soundTicks && (soundTicks < clockTicks))
|
|
// clockTicks = soundTicks;
|
|
|
|
if ((clockTicks<=0) || (gbInterruptWait))
|
|
clockTicks = 1;
|
|
|
|
return clockTicks;
|
|
}
|
|
|
|
void gbDrawLine()
|
|
{
|
|
switch(systemColorDepth) {
|
|
case 16:
|
|
{
|
|
u16 * dest = (u16 *)pix +
|
|
(gbBorderLineSkip+2) * (register_LY + gbBorderRowSkip+1)
|
|
+ gbBorderColumnSkip;
|
|
for(int x = 0; x < 160; ) {
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
*dest++ = systemColorMap16[gbLineMix[x++]];
|
|
}
|
|
if(gbBorderOn)
|
|
dest += gbBorderColumnSkip;
|
|
*dest++ = 0; // for filters that read one pixel more
|
|
}
|
|
break;
|
|
|
|
case 24:
|
|
{
|
|
u8 *dest = (u8 *)pix +
|
|
3*(gbBorderLineSkip * (register_LY + gbBorderRowSkip) +
|
|
gbBorderColumnSkip);
|
|
for(int x = 0; x < 160;) {
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
*((u32 *)dest) = systemColorMap32[gbLineMix[x++]];
|
|
dest+= 3;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 32:
|
|
{
|
|
u32 * dest = (u32 *)pix +
|
|
(gbBorderLineSkip+1) * (register_LY + gbBorderRowSkip+1)
|
|
+ gbBorderColumnSkip;
|
|
for(int x = 0; x < 160;) {
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
*dest++ = systemColorMap32[gbLineMix[x++]];
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void gbEmulate(int ticksToStop)
|
|
{
|
|
gbRegister tempRegister;
|
|
u8 tempValue;
|
|
s8 offset;
|
|
|
|
clockTicks = 0;
|
|
gbDmaTicks = 0;
|
|
|
|
register int opcode = 0;
|
|
|
|
int opcode1 = 0;
|
|
int opcode2 = 0;
|
|
bool execute = false;
|
|
|
|
while(1) {
|
|
#ifndef FINAL_VERSION
|
|
if(systemDebug) {
|
|
if(!(IFF & 0x80)) {
|
|
if(systemDebug > 1) {
|
|
sprintf(gbBuffer,"PC=%04x AF=%04x BC=%04x DE=%04x HL=%04x SP=%04x I=%04x\n",
|
|
PC.W, AF.W, BC.W, DE.W,HL.W,SP.W,IFF);
|
|
} else {
|
|
sprintf(gbBuffer,"PC=%04x I=%02x\n", PC.W, IFF);
|
|
}
|
|
log(gbBuffer);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
u16 oldPCW = PC.W;
|
|
|
|
if(IFF & 0x80) {
|
|
if(register_LCDC & 0x80) {
|
|
clockTicks = gbLcdTicks;
|
|
} else
|
|
clockTicks = 1000;
|
|
|
|
clockTicks = gbGetNextEvent(clockTicks);
|
|
|
|
/*if(gbLcdTicksDelayed < clockTicks)
|
|
clockTicks = gbLcdTicksDelayed;
|
|
|
|
if(gbLcdLYIncrementTicksDelayed < clockTicks)
|
|
clockTicks = gbLcdLYIncrementTicksDelayed;
|
|
|
|
if(gbLcdLYIncrementTicks < clockTicks)
|
|
clockTicks = gbLcdLYIncrementTicks;
|
|
|
|
if(gbSerialOn && (gbSerialTicks < clockTicks))
|
|
clockTicks = gbSerialTicks;
|
|
|
|
if(gbTimerOn && (((gbInternalTimer) & gbTimerMask[gbTimerMode])+1 < clockTicks))
|
|
clockTicks = ((gbInternalTimer) & gbTimerMask[gbTimerMode])+1;
|
|
|
|
if(soundTicks && (soundTicks < clockTicks))
|
|
clockTicks = soundTicks;
|
|
|
|
if ((clockTicks<=0) || (gbInterruptWait))
|
|
clockTicks = 1;*/
|
|
|
|
} else {
|
|
|
|
// First we apply the clockTicks, then we execute the opcodes.
|
|
opcode1 = 0;
|
|
opcode2 = 0;
|
|
execute = true;
|
|
|
|
opcode2 = opcode1 = opcode = gbReadOpcode(PC.W++);
|
|
|
|
// If HALT state was launched while IME = 0 and (register_IF & register_IE & 0x1F),
|
|
// PC.W is not incremented for the first byte of the next instruction.
|
|
if (IFF & 2)
|
|
{
|
|
PC.W--;
|
|
IFF &= ~2;
|
|
}
|
|
|
|
clockTicks = gbCycles[opcode];
|
|
|
|
switch(opcode) {
|
|
case 0xCB:
|
|
// extended opcode
|
|
opcode2 = opcode = gbReadOpcode(PC.W++);
|
|
clockTicks = gbCyclesCB[opcode];
|
|
break;
|
|
}
|
|
gbOldClockTicks = clockTicks-1;
|
|
gbIntBreak = 1;
|
|
}
|
|
|
|
|
|
if(!emulating)
|
|
return;
|
|
|
|
// For 'breakpoint' support (opcode 0xFC is considered as a breakpoint)
|
|
if ((clockTicks==0) && execute)
|
|
{
|
|
PC.W = oldPCW;
|
|
return;
|
|
}
|
|
|
|
|
|
if (!(IFF & 0x80))
|
|
clockTicks = 1;
|
|
|
|
gbRedoLoop:
|
|
|
|
|
|
|
|
if (gbInterruptWait)
|
|
gbInterruptWait = 0;
|
|
else
|
|
gbInterruptLaunched = 0;
|
|
|
|
|
|
// Used for the EI/DI instruction's delay.
|
|
if (IFF & 0x38)
|
|
{
|
|
int tempIFF = (IFF >> 4) & 3;
|
|
|
|
if (tempIFF <=clockTicks)
|
|
{
|
|
tempIFF = 0;
|
|
IFF |=1;
|
|
}
|
|
else
|
|
tempIFF -= clockTicks;
|
|
IFF = (IFF & 0xCF) | (tempIFF <<4);
|
|
|
|
if (IFF & 0x08)
|
|
IFF &= 0x82;
|
|
}
|
|
|
|
|
|
if (register_LCDCBusy)
|
|
{
|
|
register_LCDCBusy-=clockTicks;
|
|
if (register_LCDCBusy<0)
|
|
register_LCDCBusy = 0;
|
|
}
|
|
|
|
|
|
if(gbSgbMode) {
|
|
if(gbSgbPacketTimeout) {
|
|
gbSgbPacketTimeout -= clockTicks;
|
|
|
|
if(gbSgbPacketTimeout <= 0)
|
|
gbSgbResetPacketState();
|
|
}
|
|
}
|
|
|
|
ticksToStop -= clockTicks;
|
|
|
|
// DIV register emulation
|
|
gbDivTicks -= clockTicks;
|
|
while(gbDivTicks <= 0) {
|
|
gbMemory[0xff04] = ++register_DIV;
|
|
gbDivTicks += GBDIV_CLOCK_TICKS;
|
|
}
|
|
|
|
if(register_LCDC & 0x80) {
|
|
// LCD stuff
|
|
|
|
gbLcdTicks -= clockTicks;
|
|
gbLcdTicksDelayed -= clockTicks;
|
|
gbLcdLYIncrementTicks -= clockTicks;
|
|
gbLcdLYIncrementTicksDelayed -= clockTicks;
|
|
|
|
|
|
// our counters are off, see what we need to do
|
|
|
|
// This looks (and kinda is) complicated, however this
|
|
// is the only way I found to emulate properly the way
|
|
// the real hardware operates...
|
|
while(((gbLcdTicks <= 0) && (gbLCDChangeHappened == false)) ||
|
|
((gbLcdTicksDelayed <= 0) && (gbLCDChangeHappened == true)) ||
|
|
((gbLcdLYIncrementTicks <= 0) && (gbLYChangeHappened == false)) ||
|
|
((gbLcdLYIncrementTicksDelayed<=0) && (gbLYChangeHappened == true)))
|
|
{
|
|
|
|
if ((gbLcdLYIncrementTicks <= 0) && (!gbLYChangeHappened))
|
|
{
|
|
gbLYChangeHappened = true;
|
|
gbMemory[0xff44] = register_LY = (register_LY + 1) % 154;
|
|
|
|
if (register_LY == 0x91)
|
|
{
|
|
/* if (IFF & 0x80)
|
|
gbScreenOn = !gbScreenOn;
|
|
else*/ if (register_LCDC & 0x80)
|
|
gbScreenOn = true;
|
|
}
|
|
|
|
gbLcdLYIncrementTicks += GBLY_INCREMENT_CLOCK_TICKS;
|
|
|
|
if (gbLcdMode == 1)
|
|
{
|
|
|
|
if(register_LY == 153)
|
|
gbLcdLYIncrementTicks -= GBLY_INCREMENT_CLOCK_TICKS - gbLine99Ticks;
|
|
else if(register_LY == 0)
|
|
gbLcdLYIncrementTicks += GBLY_INCREMENT_CLOCK_TICKS - gbLine99Ticks;
|
|
}
|
|
|
|
// GB only 'bug' : Halt state is broken one tick before LY==LYC interrupt
|
|
// is reflected in the registers.
|
|
if ((gbHardware & 5) && (IFF & 0x80) && (register_LY == register_LYC)
|
|
&& (register_STAT & 0x40) && (register_LY != 0))
|
|
{
|
|
if (!((gbLcdModeDelayed != 1) && (register_LY==0)))
|
|
{
|
|
gbInt48Signal &= ~9;
|
|
gbCompareLYToLYC();
|
|
gbLYChangeHappened = false;
|
|
gbMemory[0xff41] = register_STAT;
|
|
gbMemory[0xff0f] = register_IF;
|
|
}
|
|
|
|
gbLcdLYIncrementTicksDelayed += GBLY_INCREMENT_CLOCK_TICKS - gbLine99Ticks+1;
|
|
}
|
|
}
|
|
|
|
|
|
if ((gbLcdTicks <= 0) && (!gbLCDChangeHappened))
|
|
{
|
|
gbLCDChangeHappened = true;
|
|
|
|
switch(gbLcdMode)
|
|
{
|
|
case 0:
|
|
{
|
|
// H-Blank
|
|
// check if we reached the V-Blank period
|
|
if(register_LY == 144) {
|
|
// Yes, V-Blank
|
|
// set the LY increment counter
|
|
if (gbHardware & 0x5)
|
|
{
|
|
register_IF |= 1; // V-Blank interrupt
|
|
}
|
|
|
|
gbInt48Signal &= ~6;
|
|
if(register_STAT & 0x10)
|
|
{
|
|
// send LCD interrupt only if no interrupt 48h signal...
|
|
if ((!(gbInt48Signal & 1)) && ((!(gbInt48Signal & 8)) || (gbHardware & 0x0a)))
|
|
{
|
|
register_IF |=2;
|
|
gbInterruptLaunched |= 2;
|
|
if (gbHardware & 0xa)
|
|
gbInterruptWait = 1;
|
|
}
|
|
gbInt48Signal |= 2;
|
|
}
|
|
gbInt48Signal &= ~1;
|
|
|
|
gbLcdTicks += GBLCD_MODE_1_CLOCK_TICKS;
|
|
gbLcdMode = 1;
|
|
|
|
} else {
|
|
// go the the OAM being accessed mode
|
|
gbLcdTicks += GBLCD_MODE_2_CLOCK_TICKS;
|
|
gbLcdMode = 2;
|
|
|
|
gbInt48Signal &= ~6;
|
|
if(register_STAT & 0x20)
|
|
{
|
|
// send LCD interrupt only if no interrupt 48h signal...
|
|
if (!gbInt48Signal)
|
|
{
|
|
register_IF |= 2;
|
|
gbInterruptLaunched |= 2;
|
|
}
|
|
gbInt48Signal |= 4;
|
|
}
|
|
gbInt48Signal &= ~1;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
{
|
|
// V-Blank
|
|
// next mode is OAM being accessed mode
|
|
gbInt48Signal &= ~5;
|
|
if(register_STAT & 0x20)
|
|
{
|
|
// send LCD interrupt only if no interrupt 48h signal...
|
|
if (!gbInt48Signal)
|
|
{
|
|
register_IF |= 2;
|
|
gbInterruptLaunched |= 2;
|
|
if ((gbHardware & 0xa) && (IFF & 0x80))
|
|
gbInterruptWait = 1;
|
|
}
|
|
gbInt48Signal |= 4;
|
|
}
|
|
gbInt48Signal &= ~2;
|
|
|
|
gbLcdTicks += GBLCD_MODE_2_CLOCK_TICKS;
|
|
|
|
gbLcdMode = 2;
|
|
register_LY = 0x00;
|
|
|
|
}
|
|
break;
|
|
case 2:
|
|
{
|
|
|
|
// OAM being accessed mode
|
|
// next mode is OAM and VRAM in use
|
|
if ((gbScreenOn) && (register_LCDC & 0x80))
|
|
{
|
|
gbDrawSprites(false);
|
|
// Used to add a one tick delay when a window line is drawn.
|
|
//(fixes a part of Carmaggedon problem)
|
|
if((register_LCDC & 0x01 || gbCgbMode) && (register_LCDC & 0x20) &&
|
|
(gbWindowLine != -2)) {
|
|
|
|
int inUseRegister_WY = 0;
|
|
int tempgbWindowLine = gbWindowLine;
|
|
|
|
if ((tempgbWindowLine == -1) || (tempgbWindowLine>144))
|
|
{
|
|
inUseRegister_WY = oldRegister_WY;
|
|
if (register_LY>oldRegister_WY)
|
|
tempgbWindowLine = 146;
|
|
}
|
|
|
|
if(register_LY >= inUseRegister_WY) {
|
|
|
|
if (tempgbWindowLine == -1)
|
|
tempgbWindowLine = 0;
|
|
|
|
int wx = register_WX;
|
|
wx -= 7;
|
|
if (wx<0)
|
|
wx = 0;
|
|
|
|
if((wx <= 159) && (tempgbWindowLine <= 143))
|
|
for (int i = wx; i<300; i++)
|
|
if (gbSpeed)
|
|
gbSpritesTicks[i]+=3;
|
|
else
|
|
gbSpritesTicks[i]+=1;
|
|
}
|
|
}
|
|
}
|
|
|
|
gbInt48Signal &= ~7;
|
|
|
|
gbLcdTicks += GBLCD_MODE_3_CLOCK_TICKS+gbSpritesTicks[299];
|
|
gbLcdMode = 3;
|
|
}
|
|
break;
|
|
case 3:
|
|
{
|
|
// OAM and VRAM in use
|
|
// next mode is H-Blank
|
|
|
|
|
|
gbInt48Signal &= ~7;
|
|
if(register_STAT & 0x08)
|
|
{
|
|
// send LCD interrupt only if no interrupt 48h signal...
|
|
if (!(gbInt48Signal & 8))
|
|
{
|
|
register_IF |= 2;
|
|
if ((gbHardware & 0xa) && (IFF & 0x80))
|
|
gbInterruptWait = 1;
|
|
}
|
|
gbInt48Signal |= 1;
|
|
}
|
|
|
|
gbLcdTicks += GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299];
|
|
|
|
gbLcdMode = 0;
|
|
|
|
// No HDMA during HALT !
|
|
if(gbHdmaOn && (!(IFF & 0x80) || (register_IE & register_IF & 0x1f))) {
|
|
gbDoHdma();
|
|
}
|
|
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
if ((gbLcdTicksDelayed <= 0) && (gbLCDChangeHappened)) {
|
|
int framesToSkip = systemFrameSkip;
|
|
if(speedup)
|
|
framesToSkip = 9; // try 6 FPS during speedup
|
|
//gbLcdTicksDelayed = gbLcdTicks+1;
|
|
gbLCDChangeHappened = false;
|
|
switch(gbLcdModeDelayed) {
|
|
case 0:
|
|
{
|
|
// H-Blank
|
|
|
|
memset(gbSCYLine,gbSCYLine[299],sizeof(gbSCYLine));
|
|
memset(gbSCXLine,gbSCXLine[299],sizeof(gbSCXLine));
|
|
memset(gbBgpLine,gbBgpLine[299],sizeof(gbBgpLine));
|
|
memset(gbObp0Line,gbObp0Line[299],sizeof(gbObp0Line));
|
|
memset(gbObp1Line,gbObp1Line[299],sizeof(gbObp1Line));
|
|
memset(gbSpritesTicks,gbSpritesTicks[299],sizeof(gbSpritesTicks));
|
|
|
|
if (gbWindowLine <0)
|
|
oldRegister_WY = register_WY;
|
|
// check if we reached the V-Blank period
|
|
if(register_LY == 144) {
|
|
// Yes, V-Blank
|
|
// set the LY increment counter
|
|
|
|
if(register_LCDC & 0x80) {
|
|
if (gbHardware & 0xa)
|
|
{
|
|
|
|
register_IF |= 1; // V-Blank interrupt
|
|
gbInterruptLaunched |=1;
|
|
}
|
|
|
|
|
|
}
|
|
|
|
gbLcdTicksDelayed += GBLCD_MODE_1_CLOCK_TICKS;
|
|
gbLcdModeDelayed = 1;
|
|
|
|
gbFrameCount++;
|
|
systemFrame();
|
|
|
|
if((gbFrameCount % 10) == 0)
|
|
system10Frames(60);
|
|
|
|
if(gbFrameCount >= 60) {
|
|
u32 currentTime = systemGetClock();
|
|
if(currentTime != gbLastTime)
|
|
systemShowSpeed(100000/(currentTime - gbLastTime));
|
|
else
|
|
systemShowSpeed(0);
|
|
gbLastTime = currentTime;
|
|
gbFrameCount = 0;
|
|
}
|
|
|
|
if(systemReadJoypads()) {
|
|
// read joystick
|
|
if(gbSgbMode && gbSgbMultiplayer) {
|
|
if(gbSgbFourPlayers) {
|
|
gbJoymask[0] = systemReadJoypad(0);
|
|
gbJoymask[1] = systemReadJoypad(1);
|
|
gbJoymask[2] = systemReadJoypad(2);
|
|
gbJoymask[3] = systemReadJoypad(3);
|
|
} else {
|
|
gbJoymask[0] = systemReadJoypad(0);
|
|
gbJoymask[1] = systemReadJoypad(1);
|
|
}
|
|
} else {
|
|
gbJoymask[0] = systemReadJoypad(-1);
|
|
}
|
|
}
|
|
int newmask = gbJoymask[0] & 255;
|
|
|
|
if(gbRomType == 0x22) {
|
|
systemUpdateMotionSensor();
|
|
}
|
|
|
|
if(newmask)
|
|
{
|
|
gbMemory[0xff0f] = register_IF |= 16;
|
|
}
|
|
|
|
|
|
newmask = (gbJoymask[0] >> 10);
|
|
|
|
speedup = (newmask & 1) ? true : false;
|
|
gbCapture = (newmask & 2) ? true : false;
|
|
|
|
if(gbCapture && !gbCapturePrevious) {
|
|
gbCaptureNumber++;
|
|
systemScreenCapture(gbCaptureNumber);
|
|
}
|
|
gbCapturePrevious = gbCapture;
|
|
|
|
if(gbFrameSkipCount >= framesToSkip) {
|
|
|
|
if(!gbSgbMask)
|
|
{
|
|
if (gbBorderOn)
|
|
gbSgbRenderBorder();
|
|
//if (gbScreenOn)
|
|
systemDrawScreen();
|
|
}
|
|
gbFrameSkipCount = 0;
|
|
} else
|
|
gbFrameSkipCount++;
|
|
|
|
} else {
|
|
// go the the OAM being accessed mode
|
|
gbLcdTicksDelayed += GBLCD_MODE_2_CLOCK_TICKS;
|
|
gbLcdModeDelayed = 2;
|
|
gbInt48Signal &= ~3;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
{
|
|
// V-Blank
|
|
// next mode is OAM being accessed mode
|
|
|
|
// gbScreenOn = true;
|
|
|
|
oldRegister_WY = register_WY;
|
|
|
|
gbLcdTicksDelayed += GBLCD_MODE_2_CLOCK_TICKS;
|
|
gbLcdModeDelayed = 2;
|
|
|
|
// reset the window line
|
|
gbWindowLine = -1;
|
|
}
|
|
break;
|
|
case 2:
|
|
{
|
|
// OAM being accessed mode
|
|
// next mode is OAM and VRAM in use
|
|
gbLcdTicksDelayed += GBLCD_MODE_3_CLOCK_TICKS+gbSpritesTicks[299];
|
|
gbLcdModeDelayed = 3;
|
|
}
|
|
break;
|
|
case 3:
|
|
{
|
|
|
|
// OAM and VRAM in use
|
|
// next mode is H-Blank
|
|
if((register_LY < 144) && (register_LCDC & 0x80) && gbScreenOn) {
|
|
if(!gbSgbMask) {
|
|
if(gbFrameSkipCount >= framesToSkip) {
|
|
if (!gbBlackScreen)
|
|
{
|
|
gbRenderLine();
|
|
gbDrawSprites(true);
|
|
}
|
|
else if (gbBlackScreen)
|
|
{
|
|
u16 color = gbColorOption ? gbColorFilter[0] : 0;
|
|
if (!gbCgbMode)
|
|
color = gbColorOption ? gbColorFilter[gbPalette[3] & 0x7FFF] :
|
|
gbPalette[3] & 0x7FFF;
|
|
for(int i = 0; i < 160; i++)
|
|
{
|
|
gbLineMix[i] = color;
|
|
gbLineBuffer[i] = 0;
|
|
}
|
|
}
|
|
gbDrawLine();
|
|
}
|
|
}
|
|
}
|
|
gbLcdTicksDelayed += GBLCD_MODE_0_CLOCK_TICKS-gbSpritesTicks[299];
|
|
gbLcdModeDelayed = 0;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((gbLcdLYIncrementTicksDelayed <= 0) && (gbLYChangeHappened == true))
|
|
{
|
|
|
|
gbLYChangeHappened = false;
|
|
|
|
if (!((gbLcdMode != 1) && (register_LY==0)))
|
|
{
|
|
{
|
|
gbInt48Signal &= ~8;
|
|
gbCompareLYToLYC();
|
|
if ((gbInt48Signal == 8) && (!((register_LY == 0) && (gbHardware & 1))))
|
|
gbInterruptLaunched |= 2;
|
|
if ((gbHardware & (gbSpeed ? 8 : 2)) && (register_LY==0) && ((register_STAT & 0x44) == 0x44) && (gbLcdLYIncrementTicksDelayed==0))
|
|
{
|
|
gbInterruptWait = 1;
|
|
|
|
}
|
|
}
|
|
}
|
|
gbLcdLYIncrementTicksDelayed += GBLY_INCREMENT_CLOCK_TICKS;
|
|
|
|
if (gbLcdModeDelayed == 1)
|
|
{
|
|
|
|
if(register_LY == 153)
|
|
gbLcdLYIncrementTicksDelayed -= GBLY_INCREMENT_CLOCK_TICKS - gbLine99Ticks;
|
|
else if(register_LY == 0)
|
|
gbLcdLYIncrementTicksDelayed += GBLY_INCREMENT_CLOCK_TICKS - gbLine99Ticks;
|
|
}
|
|
gbMemory[0xff0f] = register_IF;
|
|
gbMemory[0xff41] = register_STAT;
|
|
}
|
|
}
|
|
gbMemory[0xff0f] = register_IF;
|
|
gbMemory[0xff41] = register_STAT = (register_STAT & 0xfc) | gbLcdModeDelayed;
|
|
}
|
|
else
|
|
{
|
|
|
|
// Used to update the screen with white lines when it's off.
|
|
// (it looks strange, but it's kinda accurate :p)
|
|
// You can try the Mario Demo Vx.x for exemple
|
|
// (check the bottom 2 lines while moving)
|
|
if (!gbWhiteScreen)
|
|
{
|
|
gbScreenTicks -= clockTicks;
|
|
gbLcdLYIncrementTicks -= clockTicks;
|
|
while (gbLcdLYIncrementTicks <=0)
|
|
{
|
|
register_LY = ((register_LY+1)%154);
|
|
gbLcdLYIncrementTicks+=GBLY_INCREMENT_CLOCK_TICKS;
|
|
}
|
|
if (gbScreenTicks <= 0)
|
|
{
|
|
gbWhiteScreen = 1;
|
|
u8 register_LYLcdOff = ((register_LY+154)%154);
|
|
for (register_LY=0;register_LY <= 0x90;register_LY++)
|
|
{
|
|
u16 color = gbColorOption ? gbColorFilter[0x7FFF] :
|
|
0x7FFF;
|
|
if (!gbCgbMode)
|
|
color = gbColorOption ? gbColorFilter[gbPalette[0] & 0x7FFF] :
|
|
gbPalette[0] & 0x7FFF;
|
|
for(int i = 0; i < 160; i++)
|
|
{
|
|
gbLineMix[i] = color;
|
|
gbLineBuffer[i] = 0;
|
|
}
|
|
gbDrawLine();
|
|
}
|
|
register_LY = register_LYLcdOff;
|
|
}
|
|
}
|
|
|
|
if (gbWhiteScreen)
|
|
{
|
|
gbLcdLYIncrementTicks -= clockTicks;
|
|
|
|
while (gbLcdLYIncrementTicks <=0)
|
|
{
|
|
register_LY = ((register_LY+1)%154);
|
|
gbLcdLYIncrementTicks+=GBLY_INCREMENT_CLOCK_TICKS;
|
|
if (register_LY<144)
|
|
{
|
|
|
|
u16 color = gbColorOption ? gbColorFilter[0x7FFF] :
|
|
0x7FFF;
|
|
if (!gbCgbMode)
|
|
color = gbColorOption ? gbColorFilter[gbPalette[0] & 0x7FFF] :
|
|
gbPalette[0] & 0x7FFF;
|
|
for(int i = 0; i < 160; i++)
|
|
{
|
|
gbLineMix[i] = color;
|
|
gbLineBuffer[i] = 0;
|
|
}
|
|
gbDrawLine();
|
|
}
|
|
else if ((register_LY==144) && (!systemFrameSkip))
|
|
{
|
|
int framesToSkip = systemFrameSkip;
|
|
if(speedup)
|
|
framesToSkip = 9; // try 6 FPS during speedup
|
|
if((gbFrameSkipCount >= framesToSkip) || (gbWhiteScreen == 1)) {
|
|
gbWhiteScreen = 2;
|
|
|
|
if(!gbSgbMask)
|
|
{
|
|
if (gbBorderOn)
|
|
gbSgbRenderBorder();
|
|
//if (gbScreenOn)
|
|
systemDrawScreen();
|
|
}
|
|
}
|
|
if(systemReadJoypads()) {
|
|
// read joystick
|
|
if(gbSgbMode && gbSgbMultiplayer) {
|
|
if(gbSgbFourPlayers) {
|
|
gbJoymask[0] = systemReadJoypad(0);
|
|
gbJoymask[1] = systemReadJoypad(1);
|
|
gbJoymask[2] = systemReadJoypad(2);
|
|
gbJoymask[3] = systemReadJoypad(3);
|
|
} else {
|
|
gbJoymask[0] = systemReadJoypad(0);
|
|
gbJoymask[1] = systemReadJoypad(1);
|
|
}
|
|
} else {
|
|
gbJoymask[0] = systemReadJoypad(-1);
|
|
}
|
|
}
|
|
gbFrameCount++;
|
|
|
|
systemFrame();
|
|
|
|
if((gbFrameCount % 10) == 0)
|
|
system10Frames(60);
|
|
|
|
if(gbFrameCount >= 60) {
|
|
u32 currentTime = systemGetClock();
|
|
if(currentTime != gbLastTime)
|
|
systemShowSpeed(100000/(currentTime - gbLastTime));
|
|
else
|
|
systemShowSpeed(0);
|
|
gbLastTime = currentTime;
|
|
gbFrameCount = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
gbMemory[0xff41] = register_STAT;
|
|
|
|
// serial emulation
|
|
if(gbSerialOn) {
|
|
#ifdef LINK_EMULATION
|
|
if(linkConnected) {
|
|
gbSerialTicks -= clockTicks;
|
|
|
|
while(gbSerialTicks <= 0) {
|
|
// increment number of shifted bits
|
|
gbSerialBits++;
|
|
linkProc();
|
|
if(gbSerialOn && (gbMemory[0xff02] & 1)) {
|
|
if(gbSerialBits == 8) {
|
|
gbSerialBits = 0;
|
|
gbMemory[0xff01] = 0xff;
|
|
gbMemory[0xff02] &= 0x7f;
|
|
gbSerialOn = 0;
|
|
gbMemory[0xff0f] = register_IF |= 8;
|
|
gbSerialTicks = 0;
|
|
}
|
|
}
|
|
gbSerialTicks += GBSERIAL_CLOCK_TICKS;
|
|
}
|
|
} else {
|
|
#endif
|
|
if(gbMemory[0xff02] & 1) {
|
|
gbSerialTicks -= clockTicks;
|
|
|
|
// overflow
|
|
while(gbSerialTicks <= 0) {
|
|
// shift serial byte to right and put a 1 bit in its place
|
|
// gbMemory[0xff01] = 0x80 | (gbMemory[0xff01]>>1);
|
|
// increment number of shifted bits
|
|
gbSerialBits++;
|
|
if(gbSerialBits == 8) {
|
|
// end of transmission
|
|
if(gbSerialFunction) // external device
|
|
gbMemory[0xff01] = gbSerialFunction(gbMemory[0xff01]);
|
|
else
|
|
gbMemory[0xff01] = 0xff;
|
|
gbSerialTicks = 0;
|
|
gbMemory[0xff02] &= 0x7f;
|
|
gbSerialOn = 0;
|
|
gbMemory[0xff0f] = register_IF |= 8;
|
|
gbSerialBits = 0;
|
|
} else
|
|
gbSerialTicks += GBSERIAL_CLOCK_TICKS;
|
|
}
|
|
}
|
|
#ifdef LINK_EMULATION
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
soundTicks -= clockTicks;
|
|
if ( !gbSpeed )
|
|
soundTicks -= clockTicks;
|
|
|
|
while(soundTicks < 0) {
|
|
soundTicks += SOUND_CLOCK_TICKS;
|
|
|
|
gbSoundTick();
|
|
}
|
|
|
|
|
|
// timer emulation
|
|
|
|
if(gbTimerOn) {
|
|
gbTimerTicks= ((gbInternalTimer) & gbTimerMask[gbTimerMode])+1-clockTicks;
|
|
|
|
while(gbTimerTicks <= 0) {
|
|
register_TIMA++;
|
|
// timer overflow!
|
|
if((register_TIMA & 0xff) == 0) {
|
|
// reload timer modulo
|
|
register_TIMA = register_TMA;
|
|
// flag interrupt
|
|
gbMemory[0xff0f] = register_IF |= 4;
|
|
}
|
|
gbTimerTicks += gbTimerClockTicks;
|
|
}
|
|
gbTimerOnChange = false;
|
|
gbTimerModeChange = false;
|
|
|
|
gbMemory[0xff05] = register_TIMA;
|
|
|
|
}
|
|
|
|
gbInternalTimer -= clockTicks;
|
|
while (gbInternalTimer<0)
|
|
gbInternalTimer+=0x100;
|
|
|
|
clockTicks = 0;
|
|
|
|
if (gbIntBreak == 1)
|
|
{
|
|
gbIntBreak = 0;
|
|
if ((register_IE & register_IF & gbInterruptLaunched & 0x3) &&
|
|
((IFF & 0x81) == 1) && (!gbInterruptWait) && (execute))
|
|
{
|
|
gbIntBreak = 2;
|
|
PC.W = oldPCW;
|
|
execute = false;
|
|
gbOldClockTicks = 0;
|
|
}
|
|
if (gbOldClockTicks)
|
|
{
|
|
clockTicks = gbOldClockTicks;
|
|
gbOldClockTicks = 0;
|
|
goto gbRedoLoop;
|
|
}
|
|
}
|
|
|
|
// Executes the opcode(s), and apply the instruction's remaining clockTicks (if any).
|
|
if (execute)
|
|
{
|
|
switch(opcode1) {
|
|
case 0xCB:
|
|
// extended opcode
|
|
switch(opcode2) {
|
|
#include "gbCodesCB.h"
|
|
}
|
|
break;
|
|
#include "gbCodes.h"
|
|
}
|
|
execute = false;
|
|
|
|
if (clockTicks)
|
|
{
|
|
gbDmaTicks += clockTicks;
|
|
clockTicks = 0;
|
|
}
|
|
}
|
|
|
|
if (gbDmaTicks)
|
|
{
|
|
clockTicks = gbGetNextEvent(gbDmaTicks);
|
|
|
|
if (clockTicks<=gbDmaTicks)
|
|
gbDmaTicks -= clockTicks;
|
|
else
|
|
{
|
|
clockTicks = gbDmaTicks;
|
|
gbDmaTicks = 0;
|
|
}
|
|
|
|
goto gbRedoLoop;
|
|
}
|
|
|
|
|
|
// Remove the 'if an IE is pending' flag if IE has finished being executed.
|
|
if ((IFF & 0x40) && !(IFF & 0x30))
|
|
IFF &= 0x81;
|
|
|
|
|
|
|
|
if ((register_IE & register_IF & 0x1f) && (IFF & 0x81) && (!gbInterruptWait))
|
|
{
|
|
|
|
if (IFF & 1)
|
|
{
|
|
// Add 5 ticks for the interrupt execution time
|
|
gbDmaTicks += 5;
|
|
|
|
if (gbIntBreak == 2)
|
|
{
|
|
gbDmaTicks--;
|
|
gbIntBreak = 0;
|
|
}
|
|
|
|
|
|
if(register_IF & register_IE & 1)
|
|
gbVblank_interrupt();
|
|
else if(register_IF & register_IE & 2)
|
|
gbLcd_interrupt();
|
|
else if(register_IF & register_IE & 4)
|
|
gbTimer_interrupt();
|
|
else if(register_IF & register_IE & 8)
|
|
gbSerial_interrupt();
|
|
else if(register_IF & register_IE & 16)
|
|
gbJoypad_interrupt();
|
|
}
|
|
|
|
IFF &= ~0x81;
|
|
}
|
|
|
|
if (IFF & 0x08)
|
|
IFF &=~0x79;
|
|
|
|
// Used to apply the interrupt's execution time.
|
|
if (gbDmaTicks)
|
|
{
|
|
clockTicks = gbGetNextEvent(gbDmaTicks);
|
|
|
|
if (clockTicks<=gbDmaTicks)
|
|
gbDmaTicks -= clockTicks;
|
|
else
|
|
{
|
|
clockTicks = gbDmaTicks;
|
|
gbDmaTicks = 0;
|
|
}
|
|
goto gbRedoLoop;
|
|
}
|
|
|
|
|
|
gbBlackScreen = false;
|
|
|
|
if((ticksToStop <= 0)) {
|
|
if(!(register_LCDC & 0x80)) {
|
|
if(systemReadJoypads()) {
|
|
// read joystick
|
|
if(gbSgbMode && gbSgbMultiplayer) {
|
|
if(gbSgbFourPlayers) {
|
|
gbJoymask[0] = systemReadJoypad(0);
|
|
gbJoymask[1] = systemReadJoypad(1);
|
|
gbJoymask[2] = systemReadJoypad(2);
|
|
gbJoymask[3] = systemReadJoypad(3);
|
|
} else {
|
|
gbJoymask[0] = systemReadJoypad(0);
|
|
gbJoymask[1] = systemReadJoypad(1);
|
|
}
|
|
} else {
|
|
gbJoymask[0] = systemReadJoypad(-1);
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
struct EmulatedSystem GBSystem = {
|
|
// emuMain
|
|
gbEmulate,
|
|
// emuReset
|
|
gbReset,
|
|
// emuCleanUp
|
|
gbCleanUp,
|
|
// emuReadBattery
|
|
gbReadBatteryFile,
|
|
// emuWriteBattery
|
|
gbWriteBatteryFile,
|
|
// emuReadState
|
|
gbReadSaveState,
|
|
// emuWriteState
|
|
gbWriteSaveState,
|
|
// emuReadMemState
|
|
gbReadMemSaveState,
|
|
// emuWriteMemState
|
|
gbWriteMemSaveState,
|
|
// emuWritePNG
|
|
gbWritePNGFile,
|
|
// emuWriteBMP
|
|
gbWriteBMPFile,
|
|
// emuUpdateCPSR
|
|
NULL,
|
|
// emuHasDebugger
|
|
false,
|
|
// emuCount
|
|
#ifdef FINAL_VERSION
|
|
70000/4,
|
|
#else
|
|
1000,
|
|
#endif
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Nintendo Wii/Gamecube Port Additions
|
|
*
|
|
* Duplicate versions of save functions above, using memory
|
|
* I want to kill whoever wrote so many stupid functions, and did so without
|
|
* doing it memory-based
|
|
* Tantric - October 2008
|
|
***************************************************************************/
|
|
|
|
int MemgbWriteSaveMBC1(char * membuffer) {
|
|
if (gbRam) {
|
|
memcpy(membuffer, gbRam, (gbRamSizeMask + 1));
|
|
return (gbRamSizeMask + 1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int MemgbWriteSaveMBC2(char * membuffer) {
|
|
if (gbRam) {
|
|
memcpy(membuffer, &gbMemory[0xa000], 256);
|
|
return 256;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int MemgbWriteSaveMBC3(char * membuffer, bool extendedSave) {
|
|
int offset = 0;
|
|
if (gbRam || extendedSave) {
|
|
if (gbRam) {
|
|
memcpy(membuffer, gbRam, (gbRamSizeMask + 1));
|
|
offset += (gbRamSizeMask + 1);
|
|
}
|
|
|
|
if (extendedSave)
|
|
{
|
|
memcpy(membuffer+offset, &gbDataMBC3.mapperSeconds, (10 * sizeof(int)
|
|
+ sizeof(time_t)));
|
|
offset += (10 * sizeof(int) + sizeof(time_t));
|
|
}
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
int MemgbWriteSaveMBC5(char * membuffer) {
|
|
if (gbRam) {
|
|
memcpy(membuffer, gbRam, (gbRamSizeMask + 1));
|
|
return (gbRamSizeMask + 1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int MemgbWriteSaveMBC7(char * membuffer) {
|
|
if (gbRam) {
|
|
memcpy(membuffer, &gbMemory[0xa000], 256);
|
|
return 256;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int MemgbWriteSaveTAMA5(char * membuffer, bool extendedSave) {
|
|
int offset = 0;
|
|
|
|
if (gbRam)
|
|
{
|
|
memcpy(membuffer, gbRam, (gbRamSizeMask + 1));
|
|
offset += (gbRamSizeMask + 1);
|
|
}
|
|
|
|
memcpy(membuffer+offset, gbTAMA5ram, (gbTAMA5ramSize));
|
|
offset += (gbTAMA5ramSize);
|
|
|
|
if (extendedSave)
|
|
{
|
|
memcpy(membuffer+offset, &gbDataTAMA5.mapperSeconds, (14 * sizeof(int) + sizeof(time_t)));
|
|
offset += (14 * sizeof(int) + sizeof(time_t));
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
int MemgbWriteSaveMMM01(char * membuffer) {
|
|
if (gbRam) {
|
|
memcpy(membuffer, gbRam, (gbRamSizeMask + 1));
|
|
return (gbRamSizeMask + 1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool MemgbReadSaveMBC1(char * membuffer, int read) {
|
|
if (gbRam)
|
|
{
|
|
if (read != (gbRamSizeMask + 1))
|
|
return false;
|
|
else
|
|
memcpy(gbRam, membuffer, read);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool MemgbReadSaveMBC2(char * membuffer, int read) {
|
|
if (gbRam)
|
|
{
|
|
if (read != 256)
|
|
return false;
|
|
else
|
|
memcpy(&gbMemory[0xa000], membuffer, read);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool MemgbReadSaveMBC3(char * membuffer, int read) {
|
|
int offset = 0;
|
|
|
|
if (gbRam)
|
|
{
|
|
if(read < (gbRamSizeMask + 1))
|
|
return false;
|
|
memcpy(gbRam, membuffer, (gbRamSizeMask + 1));
|
|
offset += (gbRamSizeMask + 1);
|
|
}
|
|
|
|
int gbRomType = gbRom[0x147];
|
|
|
|
if ((gbRomType == 0xf) || (gbRomType == 0x10))
|
|
{
|
|
if((uint)read < (offset + sizeof(int) * 10 + sizeof(time_t)))
|
|
return false;
|
|
memcpy(&gbDataMBC3.mapperSeconds, membuffer+offset, sizeof(int) * 10 + sizeof(time_t));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool MemgbReadSaveMBC5(char * membuffer, int read) {
|
|
if (gbRam)
|
|
{
|
|
if (read != (gbRamSizeMask + 1))
|
|
return false;
|
|
else
|
|
memcpy(gbRam, membuffer, read);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool MemgbReadSaveMBC7(char * membuffer, int read) {
|
|
if (gbRam)
|
|
{
|
|
if (read != 256)
|
|
return false;
|
|
else
|
|
memcpy(&gbMemory[0xa000], membuffer, read);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool MemgbReadSaveTAMA5(char * membuffer, int read) {
|
|
if (gbRam)
|
|
{
|
|
if (gbRamSizeMask + gbTAMA5ramSize + 1)
|
|
return false;
|
|
|
|
memcpy(gbRam, membuffer, (gbRamSizeMask + 1));
|
|
int offset = (gbRamSizeMask + 1);
|
|
memcpy(&gbDataTAMA5.mapperSeconds, membuffer+offset, sizeof(int) * 14 + sizeof(time_t));
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool MemgbReadSaveMMM01(char * membuffer, int read) {
|
|
if (gbRam)
|
|
{
|
|
if (read != (gbRamSizeMask + 1))
|
|
return false;
|
|
else
|
|
memcpy(gbRam, membuffer, read);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
int MemgbWriteBatteryFile(char * membuffer)
|
|
{
|
|
int result = 0;
|
|
if(gbBattery)
|
|
{
|
|
int type = gbRom[0x147];
|
|
bool extendedSave = true;
|
|
|
|
switch(type)
|
|
{
|
|
case 0x03:
|
|
result = MemgbWriteSaveMBC1(membuffer);
|
|
break;
|
|
case 0x06:
|
|
result = MemgbWriteSaveMBC2(membuffer);
|
|
break;
|
|
case 0x0d:
|
|
result = MemgbWriteSaveMMM01(membuffer);
|
|
break;
|
|
case 0x0f:
|
|
case 0x10:
|
|
result = MemgbWriteSaveMBC3(membuffer, extendedSave);
|
|
break;
|
|
case 0x13:
|
|
case 0xfc:
|
|
result = MemgbWriteSaveMBC3(membuffer, false);
|
|
case 0x1b:
|
|
case 0x1e:
|
|
result = MemgbWriteSaveMBC5(membuffer);
|
|
break;
|
|
case 0x22:
|
|
result = MemgbWriteSaveMBC7(membuffer);
|
|
break;
|
|
case 0xfd:
|
|
result = MemgbWriteSaveTAMA5(membuffer, extendedSave);
|
|
break;
|
|
case 0xff:
|
|
result = MemgbWriteSaveMBC1(membuffer);
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool MemgbReadBatteryFile(char * membuffer, int read)
|
|
{
|
|
bool res = false;
|
|
if (gbBattery) {
|
|
int type = gbRom[0x147];
|
|
switch (type) {
|
|
case 0x03:
|
|
res = MemgbReadSaveMBC1(membuffer, read);
|
|
break;
|
|
case 0x06:
|
|
res = MemgbReadSaveMBC2(membuffer, read);
|
|
break;
|
|
case 0x0d:
|
|
res = MemgbReadSaveMMM01(membuffer, read);
|
|
break;
|
|
case 0x0f:
|
|
case 0x10:
|
|
res = MemgbReadSaveMBC3(membuffer, read);
|
|
if (!res) {
|
|
time(&gbDataMBC3.mapperLastTime);
|
|
struct tm *lt;
|
|
lt = localtime(&gbDataMBC3.mapperLastTime);
|
|
gbDataMBC3.mapperSeconds = lt->tm_sec;
|
|
gbDataMBC3.mapperMinutes = lt->tm_min;
|
|
gbDataMBC3.mapperHours = lt->tm_hour;
|
|
gbDataMBC3.mapperDays = lt->tm_yday & 255;
|
|
gbDataMBC3.mapperControl = (gbDataMBC3.mapperControl & 0xfe)
|
|
| (lt->tm_yday > 255 ? 1 : 0);
|
|
res = 0;
|
|
break;
|
|
}
|
|
break;
|
|
case 0x13:
|
|
case 0xfc:
|
|
res = MemgbReadSaveMBC3(membuffer, read);
|
|
break;
|
|
case 0x1b:
|
|
case 0x1e:
|
|
res = MemgbReadSaveMBC5(membuffer, read);
|
|
break;
|
|
case 0x22:
|
|
res = MemgbReadSaveMBC7(membuffer, read);
|
|
break;
|
|
case 0xfd:
|
|
res = MemgbReadSaveTAMA5(membuffer, read);
|
|
if (!res) {
|
|
u8 gbDaysinMonth[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30,
|
|
31, 30, 31 };
|
|
time(&gbDataTAMA5.mapperLastTime);
|
|
struct tm *lt;
|
|
lt = localtime(&gbDataTAMA5.mapperLastTime);
|
|
gbDataTAMA5.mapperSeconds = lt->tm_sec;
|
|
gbDataTAMA5.mapperMinutes = lt->tm_min;
|
|
gbDataTAMA5.mapperHours = lt->tm_hour;
|
|
gbDataTAMA5.mapperDays = 1;
|
|
gbDataTAMA5.mapperMonths = 1;
|
|
gbDataTAMA5.mapperYears = 1970;
|
|
int days = lt->tm_yday + 365 * 3;
|
|
while (days) {
|
|
gbDataTAMA5.mapperDays++;
|
|
days--;
|
|
if (gbDataTAMA5.mapperDays
|
|
> gbDaysinMonth[gbDataTAMA5.mapperMonths - 1]) {
|
|
gbDataTAMA5.mapperDays = 1;
|
|
gbDataTAMA5.mapperMonths++;
|
|
if (gbDataTAMA5.mapperMonths > 12) {
|
|
gbDataTAMA5.mapperMonths = 1;
|
|
gbDataTAMA5.mapperYears++;
|
|
if ((gbDataTAMA5.mapperYears & 3) == 0)
|
|
gbDaysinMonth[1] = 29;
|
|
else
|
|
gbDaysinMonth[1] = 28;
|
|
}
|
|
}
|
|
}
|
|
gbDataTAMA5.mapperControl = (gbDataTAMA5.mapperControl & 0xfe)
|
|
| (lt->tm_yday > 255 ? 1 : 0);
|
|
res = false;
|
|
break;
|
|
}
|
|
break;
|
|
case 0xff:
|
|
res = MemgbReadSaveMBC1(membuffer, read);
|
|
break;
|
|
}
|
|
}
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
return res;
|
|
}
|