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vbagx/source/vba/dmg/GB.cpp

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upgrade sound core and GB engine
2008-10-18 08:49:04 +02:00
// VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
// Copyright (C) 1999-2003 Forgotten
// Copyright (C) 2005-2006 Forgotten and the VBA development team
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or(at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "../System.h"
#include "../NLS.h"
#include "gb.h"
#include "gbCheats.h"
#include "gbGlobals.h"
#include "gbMemory.h"
#include "gbSGB.h"
#include "gbSound.h"
#include "../Util.h"
#ifdef __GNUC__
#define _stricmp strcasecmp
#endif
extern u8 *pix;
extern bool speedup;
bool gbUpdateSizes();
bool inBios = false;
// debugging
bool memorydebug = false;
char gbBuffer[2048];
extern u16 gbLineMix[160];
// mappers
void (*mapper)(u16,u8) = NULL;
void (*mapperRAM)(u16,u8) = NULL;
u8 (*mapperReadRAM)(u16) = NULL;
void (*mapperUpdateClock)() = NULL;
// registers
gbRegister PC;
gbRegister SP;
gbRegister AF;
gbRegister BC;
gbRegister DE;
gbRegister HL;
u16 IFF = 0;
// 0xff04
u8 register_DIV = 0;
// 0xff05
u8 register_TIMA = 0;
// 0xff06
u8 register_TMA = 0;
// 0xff07
u8 register_TAC = 0;
// 0xff0f
u8 register_IF = 0;
// 0xff40
u8 register_LCDC = 0;
// 0xff41
u8 register_STAT = 0;
// 0xff42
u8 register_SCY = 0;
// 0xff43
u8 register_SCX = 0;
// 0xff44
u8 register_LY = 0;
// 0xff45
u8 register_LYC = 0;
// 0xff46
u8 register_DMA = 0;
// 0xff4a
u8 register_WY = 0;
// 0xff4b
u8 register_WX = 0;
// 0xff4f
u8 register_VBK = 0;
// 0xff51
u8 register_HDMA1 = 0;
// 0xff52
u8 register_HDMA2 = 0;
// 0xff53
u8 register_HDMA3 = 0;
// 0xff54
u8 register_HDMA4 = 0;
// 0xff55
u8 register_HDMA5 = 0;
// 0xff70
u8 register_SVBK = 0;
// 0xffff
u8 register_IE = 0;
// ticks definition
int GBDIV_CLOCK_TICKS = 64;
int GBLCD_MODE_0_CLOCK_TICKS = 51;
int GBLCD_MODE_1_CLOCK_TICKS = 1140;
int GBLCD_MODE_2_CLOCK_TICKS = 20;
int GBLCD_MODE_3_CLOCK_TICKS = 43;
int GBLY_INCREMENT_CLOCK_TICKS = 114;
int GBTIMER_MODE_0_CLOCK_TICKS = 256;
int GBTIMER_MODE_1_CLOCK_TICKS = 4;
int GBTIMER_MODE_2_CLOCK_TICKS = 16;
int GBTIMER_MODE_3_CLOCK_TICKS = 64;
int GBSERIAL_CLOCK_TICKS = 128;
int GBSYNCHRONIZE_CLOCK_TICKS = 52920;
// state variables
// general
int clockTicks = 0;
bool gbSystemMessage = false;
int gbGBCColorType = 0;
int gbHardware = 0;
int gbRomType = 0;
int gbRemainingClockTicks = 0;
int gbOldClockTicks = 0;
int gbIntBreak = 0;
int gbInterruptLaunched = 0;
u8 gbCheatingDevice = 0; // 1 = GS, 2 = GG
// breakpoint
bool breakpoint = false;
// interrupt
int gbInt48Signal = 0;
int gbInterruptWait = 0;
// serial
int gbSerialOn = 0;
int gbSerialTicks = 0;
int gbSerialBits = 0;
// timer
bool gbTimerOn = false;
int gbTimerTicks = GBTIMER_MODE_0_CLOCK_TICKS;
int gbTimerClockTicks = GBTIMER_MODE_0_CLOCK_TICKS;
int gbTimerMode = 0;
bool gbIncreased = false;
// The internal timer is always active, and it is
// not reset by writing to register_TIMA/TMA, but by
// writing to register_DIV...
int gbInternalTimer = 0x55;
const u8 gbTimerMask [4] = {0xff, 0x3, 0xf, 0x3f};
const u8 gbTimerBug [8] = {0x80, 0x80, 0x02, 0x02, 0x0, 0xff, 0x0, 0xff};
bool gbTimerModeChange = false;
bool gbTimerOnChange = false;
// lcd
bool gbScreenOn = true;
int gbLcdMode = 2;
int gbLcdModeDelayed = 2;
int gbLcdTicks = GBLCD_MODE_2_CLOCK_TICKS-1;
int gbLcdTicksDelayed = GBLCD_MODE_2_CLOCK_TICKS;
int gbLcdLYIncrementTicks = 114;
int gbLcdLYIncrementTicksDelayed = 115;
int gbScreenTicks = 0;
u8 gbSCYLine[300];
u8 gbSCXLine[300];
u8 gbBgpLine[300];
u8 gbObp0Line [300];
u8 gbObp1Line [300];
u8 gbSpritesTicks [300];
u8 oldRegister_WY;
bool gbLYChangeHappened = false;
bool gbLCDChangeHappened = false;
int gbLine99Ticks = 1;
int gbRegisterLYLCDCOffOn = 0;
int inUseRegister_WY = 0;
// Used to keep track of the line that ellapse
// when screen is off
int gbWhiteScreen = 0;
bool gbBlackScreen = false;
int register_LCDCBusy = 0;
// div
int gbDivTicks = GBDIV_CLOCK_TICKS;
// cgb
int gbVramBank = 0;
int gbWramBank = 1;
//sgb
bool gbSgbResetFlag = false;
// gbHdmaDestination is 0x99d0 on startup (tested on HW)
// but I'm not sure what gbHdmaSource is...
int gbHdmaSource = 0x99d0;
int gbHdmaDestination = 0x99d0;
int gbHdmaBytes = 0x0000;
int gbHdmaOn = 0;
int gbSpeed = 0;
// frame counting
int gbFrameCount = 0;
int gbFrameSkip = 0;
int gbFrameSkipCount = 0;
// timing
u32 gbLastTime = 0;
u32 gbElapsedTime = 0;
u32 gbTimeNow = 0;
int gbSynchronizeTicks = GBSYNCHRONIZE_CLOCK_TICKS;
// emulator features
int gbBattery = 0;
bool gbBatteryError = false;
int gbCaptureNumber = 0;
bool gbCapture = false;
bool gbCapturePrevious = false;
int gbJoymask[4] = { 0, 0, 0, 0 };
u8 gbRamFill = 0xff;
int gbRomSizes[] = { 0x00008000, // 32K
0x00010000, // 64K
0x00020000, // 128K
0x00040000, // 256K
0x00080000, // 512K
0x00100000, // 1024K
0x00200000, // 2048K
0x00400000, // 4096K
0x00800000 // 8192K
};
int gbRomSizesMasks[] = { 0x00007fff,
0x0000ffff,
0x0001ffff,
0x0003ffff,
0x0007ffff,
0x000fffff,
0x001fffff,
0x003fffff,
0x007fffff
};
int gbRamSizes[6] = { 0x00000000, // 0K
0x00002000, // 2K // Changed to 2000 to avoid problems with gbMemoryMap...
0x00002000, // 8K
0x00008000, // 32K
0x00020000, // 128K
0x00010000 // 64K
};
int gbRamSizesMasks[6] = { 0x00000000,
0x000007ff,
0x00001fff,
0x00007fff,
0x0001ffff,
0x0000ffff
};
int gbCycles[] = {
// 0 1 2 3 4 5 6 7 8 9 a b c d e f
1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, // 0
1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, // 1
2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, // 2
2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, // 3
1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 4
1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 5
1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 6
2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, // 7
1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 8
1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 9
1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // a
1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // b
2, 3, 3, 4, 3, 4, 2, 4, 2, 4, 3, 2, 3, 6, 2, 4, // c
2, 3, 3, 1, 3, 4, 2, 4, 2, 4, 3, 1, 3, 1, 2, 4, // d
3, 3, 2, 1, 1, 4, 2, 4, 4, 1, 4, 1, 1, 1, 2, 4, // e
3, 3, 2, 1, 1, 4, 2, 4, 3, 2, 4, 1, 0, 1, 2, 4 // f
};
int gbCyclesCB[] = {
// 0 1 2 3 4 5 6 7 8 9 a b c d e f
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 0
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 1
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 2
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 3
2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 4
2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 5
2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 6
2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 7
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 8
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 9
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // a
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // b
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // c
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // d
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // e
2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2 // f
};
u16 DAATable[] = {
0x0080,0x0100,0x0200,0x0300,0x0400,0x0500,0x0600,0x0700,
0x0800,0x0900,0x1020,0x1120,0x1220,0x1320,0x1420,0x1520,
0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700,
0x1800,0x1900,0x2020,0x2120,0x2220,0x2320,0x2420,0x2520,
0x2000,0x2100,0x2200,0x2300,0x2400,0x2500,0x2600,0x2700,
0x2800,0x2900,0x3020,0x3120,0x3220,0x3320,0x3420,0x3520,
0x3000,0x3100,0x3200,0x3300,0x3400,0x3500,0x3600,0x3700,
0x3800,0x3900,0x4020,0x4120,0x4220,0x4320,0x4420,0x4520,
0x4000,0x4100,0x4200,0x4300,0x4400,0x4500,0x4600,0x4700,
0x4800,0x4900,0x5020,0x5120,0x5220,0x5320,0x5420,0x5520,
0x5000,0x5100,0x5200,0x5300,0x5400,0x5500,0x5600,0x5700,
0x5800,0x5900,0x6020,0x6120,0x6220,0x6320,0x6420,0x6520,
0x6000,0x6100,0x6200,0x6300,0x6400,0x6500,0x6600,0x6700,
0x6800,0x6900,0x7020,0x7120,0x7220,0x7320,0x7420,0x7520,
0x7000,0x7100,0x7200,0x7300,0x7400,0x7500,0x7600,0x7700,
0x7800,0x7900,0x8020,0x8120,0x8220,0x8320,0x8420,0x8520,
0x8000,0x8100,0x8200,0x8300,0x8400,0x8500,0x8600,0x8700,
0x8800,0x8900,0x9020,0x9120,0x9220,0x9320,0x9420,0x9520,
0x9000,0x9100,0x9200,0x9300,0x9400,0x9500,0x9600,0x9700,
0x9800,0x9900,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530,
0x0090,0x0110,0x0210,0x0310,0x0410,0x0510,0x0610,0x0710,
0x0810,0x0910,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530,
0x1010,0x1110,0x1210,0x1310,0x1410,0x1510,0x1610,0x1710,
0x1810,0x1910,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530,
0x2010,0x2110,0x2210,0x2310,0x2410,0x2510,0x2610,0x2710,
0x2810,0x2910,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530,
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,
0x6010,0x6110,0x6210,0x6310,0x6410,0x6510,0x6610,0x6710,
0x6810,0x6910,0x7030,0x7130,0x7230,0x7330,0x7430,0x7530,
0x7010,0x7110,0x7210,0x7310,0x7410,0x7510,0x7610,0x7710,
0x7810,0x7910,0x8030,0x8130,0x8230,0x8330,0x8430,0x8530,
0x8010,0x8110,0x8210,0x8310,0x8410,0x8510,0x8610,0x8710,
0x8810,0x8910,0x9030,0x9130,0x9230,0x9330,0x9430,0x9530,
0x9010,0x9110,0x9210,0x9310,0x9410,0x9510,0x9610,0x9710,
0x9810,0x9910,0xA030,0xA130,0xA230,0xA330,0xA430,0xA530,
0xA010,0xA110,0xA210,0xA310,0xA410,0xA510,0xA610,0xA710,
0xA810,0xA910,0xB030,0xB130,0xB230,0xB330,0xB430,0xB530,
0xB010,0xB110,0xB210,0xB310,0xB410,0xB510,0xB610,0xB710,
0xB810,0xB910,0xC030,0xC130,0xC230,0xC330,0xC430,0xC530,
0xC010,0xC110,0xC210,0xC310,0xC410,0xC510,0xC610,0xC710,
0xC810,0xC910,0xD030,0xD130,0xD230,0xD330,0xD430,0xD530,
0xD010,0xD110,0xD210,0xD310,0xD410,0xD510,0xD610,0xD710,
0xD810,0xD910,0xE030,0xE130,0xE230,0xE330,0xE430,0xE530,
0xE010,0xE110,0xE210,0xE310,0xE410,0xE510,0xE610,0xE710,
0xE810,0xE910,0xF030,0xF130,0xF230,0xF330,0xF430,0xF530,
0xF010,0xF110,0xF210,0xF310,0xF410,0xF510,0xF610,0xF710,
0xF810,0xF910,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530,
0x0090,0x0110,0x0210,0x0310,0x0410,0x0510,0x0610,0x0710,
0x0810,0x0910,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530,
0x1010,0x1110,0x1210,0x1310,0x1410,0x1510,0x1610,0x1710,
0x1810,0x1910,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530,
0x2010,0x2110,0x2210,0x2310,0x2410,0x2510,0x2610,0x2710,
0x2810,0x2910,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530,
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));
gbBgp[0] = value & 0x03;
gbBgp[1] = (value & 0x0c)>>2;
gbBgp[2] = (value & 0x30)>>4;
gbBgp[3] = (value & 0xc0)>>6;
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));
gbObp0[0] = value & 0x03;
gbObp0[1] = (value & 0x0c)>>2;
gbObp0[2] = (value & 0x30)>>4;
gbObp0[3] = (value & 0xc0)>>6;
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));
gbObp1[0] = value & 0x03;
gbObp1[1] = (value & 0x0c)>>2;
gbObp1[2] = (value & 0x30)>>4;
gbObp1[3] = (value & 0xc0)>>6;
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)
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)
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()
{
gbGetHardwareType();
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 < 8; i++)
gbPalette[i] = systemGbPalette[gbPaletteOption*8+i];
}
for(int i = 0; i < 8; i++)
gbPalette[i] = systemGbPalette[gbPaletteOption*8+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;
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(&gbMemory[0xa000],
1,
256,
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(&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 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) },
{ &register_DIV, sizeof(u8) },
{ &register_TIMA, sizeof(u8) },
{ &register_TMA, sizeof(u8) },
{ &register_TAC, sizeof(u8) },
{ &register_IF, sizeof(u8) },
{ &register_LCDC, sizeof(u8) },
{ &register_STAT, sizeof(u8) },
{ &register_SCY, sizeof(u8) },
{ &register_SCX, sizeof(u8) },
{ &register_LY, sizeof(u8) },
{ &register_LYC, sizeof(u8) },
{ &register_DMA, sizeof(u8) },
{ &register_WY, sizeof(u8) },
{ &register_WX, sizeof(u8) },
{ &register_VBK, sizeof(u8) },
{ &register_HDMA1, sizeof(u8) },
{ &register_HDMA2, sizeof(u8) },
{ &register_HDMA3, sizeof(u8) },
{ &register_HDMA4, sizeof(u8) },
{ &register_HDMA5, sizeof(u8) },
{ &register_SVBK, sizeof(u8) },
{ &register_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)
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);
}
bool gbWriteBMPFile(const char *fileName)
{
if(gbBorderOn)
return utilWriteBMPFile(fileName, 256, 224, pix);
return utilWriteBMPFile(fileName, 160, 144, pix);
}
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) {
frameskipping changes, fix GB crash
2008-10-18 10:54:23 +02:00
// this causes system to CRASH when switching from GB to GBA and then back to GB
//free(pix);
upgrade sound core and GB engine
2008-10-18 08:49:04 +02:00
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;
}
int wy = inUseRegister_WY;
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;
}
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