mirror of
https://github.com/dborth/vbagx.git
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4362 lines
113 KiB
C++
4362 lines
113 KiB
C++
// VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
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// Copyright (C) 1999-2003 Forgotten
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// Copyright (C) 2004 Forgotten and the VBA development team
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2, or(at your option)
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// any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#include "sdfileio.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <string.h>
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#include "GBA.h"
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#include "GBAinline.h"
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#include "Globals.h"
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#include "Gfx.h"
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#include "EEprom.h"
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#include "Flash.h"
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#include "Sound.h"
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#include "Sram.h"
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#include "bios.h"
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#include "unzip.h"
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#include "Cheats.h"
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#include "NLS.h"
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#include "elf.h"
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#include "Util.h"
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#include "Port.h"
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#include "agbprint.h"
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#ifdef PROFILING
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#include "prof/prof.h"
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#endif
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#define UPDATE_REG(address, value) WRITE16LE(((u16 *)&ioMem[address]),value)
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#ifdef __GNUC__
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#define _stricmp strcasecmp
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#endif
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#define CPU_BREAK_LOOP \
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cpuSavedTicks = cpuSavedTicks - *extCpuLoopTicks;\
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*extCpuLoopTicks = *extClockTicks;
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#define CPU_BREAK_LOOP_2 \
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cpuSavedTicks = cpuSavedTicks - *extCpuLoopTicks;\
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*extCpuLoopTicks = *extClockTicks;\
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*extTicks = *extClockTicks;
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extern int emulating;
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int cpuDmaTicksToUpdate = 0;
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int cpuDmaCount = 0;
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bool cpuDmaHack = 0;
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u32 cpuDmaLast = 0;
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int dummyAddress = 0;
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int *extCpuLoopTicks = NULL;
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int *extClockTicks = NULL;
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int *extTicks = NULL;
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int gbaSaveType = 0; // used to remember the save type on reset
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bool intState = false;
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bool stopState = false;
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bool holdState = false;
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int holdType = 0;
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bool cpuSramEnabled = true;
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bool cpuFlashEnabled = true;
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bool cpuEEPROMEnabled = true;
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bool cpuEEPROMSensorEnabled = false;
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#ifdef PROFILING
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int profilingTicks = 0;
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int profilingTicksReload = 0;
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static char *profilBuffer = NULL;
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static int profilSize = 0;
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static u32 profilLowPC = 0;
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static int profilScale = 0;
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#endif
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bool freezeWorkRAM[0x40000];
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bool freezeInternalRAM[0x8000];
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int lcdTicks = 960;
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bool timer0On = false;
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int timer0Ticks = 0;
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int timer0Reload = 0;
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int timer0ClockReload = 0;
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bool timer1On = false;
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int timer1Ticks = 0;
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int timer1Reload = 0;
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int timer1ClockReload = 0;
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bool timer2On = false;
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int timer2Ticks = 0;
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int timer2Reload = 0;
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int timer2ClockReload = 0;
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bool timer3On = false;
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int timer3Ticks = 0;
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int timer3Reload = 0;
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int timer3ClockReload = 0;
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u32 dma0Source = 0;
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u32 dma0Dest = 0;
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u32 dma1Source = 0;
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u32 dma1Dest = 0;
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u32 dma2Source = 0;
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u32 dma2Dest = 0;
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u32 dma3Source = 0;
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u32 dma3Dest = 0;
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void (*cpuSaveGameFunc)(u32,u8) = flashSaveDecide;
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void (*renderLine)() = mode0RenderLine;
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bool fxOn = false;
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bool windowOn = false;
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int frameCount = 0;
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char buffer[1024];
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FILE* out = NULL;
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u32 lastTime = 0;
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int count = 0;
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int capture = 0;
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int capturePrevious = 0;
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int captureNumber = 0;
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const int TIMER_TICKS[4] =
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{
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1,
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64,
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256,
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1024
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};
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const int thumbCycles[] =
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{
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// 0 1 2 3 4 5 6 7 8 9 a b c d e f
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 1
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 2
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 3
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1, 1, 1, 1, 1, 1, 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, // 4
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2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, // 5
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2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, // 6
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2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, // 7
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2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, // 8
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2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, // 9
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, // a
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1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 2, 4, 1, 1, // b
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // c
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, // d
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, // e
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 // f
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};
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const int gamepakRamWaitState[4] =
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{
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4, 3, 2, 8
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};
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const int gamepakWaitState[8] =
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{
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4, 3, 2, 8, 4, 3, 2, 8
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};
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const int gamepakWaitState0[8] =
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{
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2, 2, 2, 2, 1, 1, 1, 1
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};
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const int gamepakWaitState1[8] =
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{
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4, 4, 4, 4, 1, 1, 1, 1
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};
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const int gamepakWaitState2[8] =
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{
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8, 8, 8, 8, 1, 1, 1, 1
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};
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int memoryWait[16] =
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{ 0, 0, 2, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 0 };
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int memoryWait32[16] =
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{ 0, 0, 9, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 0 };
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int memoryWaitSeq[16] =
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{ 0, 0, 2, 0, 0, 0, 0, 0, 2, 2, 4, 4, 8, 8, 4, 0 };
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int memoryWaitSeq32[16] =
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{ 2, 0, 3, 0, 0, 2, 2, 0, 4, 4, 8, 8, 16, 16, 8, 0 };
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int memoryWaitFetch[16] =
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{ 3, 0, 3, 0, 0, 1, 1, 0, 4, 4, 4, 4, 4, 4, 4, 0 };
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int memoryWaitFetch32[16] =
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{ 6, 0, 6, 0, 0, 2, 2, 0, 8, 8, 8, 8, 8, 8, 8, 0 };
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const int cpuMemoryWait[16] =
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{
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0, 0, 2, 0, 0, 0, 0, 0,
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2, 2, 2, 2, 2, 2, 0, 0
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};
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const int cpuMemoryWait32[16] =
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{
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0, 0, 3, 0, 0, 0, 0, 0,
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3, 3, 3, 3, 3, 3, 0, 0
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};
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const bool memory32[16] =
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{
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true, false, false, true, true, false, false, true, false, false, false, false, false, false, true, false
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};
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u8 biosProtected[4];
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#ifdef WORDS_BIGENDIAN
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bool cpuBiosSwapped = false;
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#endif
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u32 myROM[] = {
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0xEA000006,
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0xEA000093,
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0xEA000006,
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0x00000000,
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0x00000000,
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0x00000000,
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0xEA000088,
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0x00000000,
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0xE3A00302,
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0xE1A0F000,
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0xE92D5800,
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0xE55EC002,
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0xE28FB03C,
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0xE79BC10C,
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0xE14FB000,
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0xE92D0800,
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0xE20BB080,
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0xE38BB01F,
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0xE129F00B,
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0xE92D4004,
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0xE1A0E00F,
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0xE12FFF1C,
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0xE8BD4004,
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0xE3A0C0D3,
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0xE129F00C,
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0xE8BD0800,
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0xE169F00B,
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0xE8BD5800,
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0xE1B0F00E,
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0x0000009C,
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0x0000009C,
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0x0000009C,
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0x0000009C,
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0x000001F8,
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0x000001F0,
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0x000000AC,
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0x000000A0,
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0x000000FC,
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0x00000168,
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0xE12FFF1E,
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0xE1A03000,
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0xE1A00001,
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0xE1A01003,
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0xE2113102,
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0x42611000,
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0xE033C040,
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0x22600000,
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0xE1B02001,
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0xE15200A0,
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0x91A02082,
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0x3AFFFFFC,
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0xE1500002,
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0xE0A33003,
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0x20400002,
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0xE1320001,
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0x11A020A2,
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0x1AFFFFF9,
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0xE1A01000,
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0xE1A00003,
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0xE1B0C08C,
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0x22600000,
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0x42611000,
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0xE12FFF1E,
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0xE92D0010,
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0xE1A0C000,
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0xE3A01001,
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0xE1500001,
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0x81A000A0,
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0x81A01081,
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0x8AFFFFFB,
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0xE1A0000C,
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0xE1A04001,
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0xE3A03000,
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0xE1A02001,
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0xE15200A0,
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0x91A02082,
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0x3AFFFFFC,
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0xE1500002,
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0xE0A33003,
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0x20400002,
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0xE1320001,
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0x11A020A2,
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0x1AFFFFF9,
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0xE0811003,
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0xE1B010A1,
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0xE1510004,
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0x3AFFFFEE,
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0xE1A00004,
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0xE8BD0010,
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0xE12FFF1E,
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0xE0010090,
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0xE1A01741,
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0xE2611000,
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0xE3A030A9,
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0xE0030391,
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0xE1A03743,
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0xE2833E39,
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0xE0030391,
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0xE1A03743,
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0xE2833C09,
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0xE283301C,
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0xE0030391,
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0xE1A03743,
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0xE2833C0F,
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0xE28330B6,
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0xE0030391,
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0xE1A03743,
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0xE2833C16,
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0xE28330AA,
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0xE0030391,
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0xE1A03743,
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0xE2833A02,
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0xE2833081,
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0xE0030391,
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0xE1A03743,
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0xE2833C36,
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0xE2833051,
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0xE0030391,
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0xE1A03743,
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0xE2833CA2,
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0xE28330F9,
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0xE0000093,
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0xE1A00840,
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0xE12FFF1E,
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0xE3A00001,
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0xE3A01001,
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0xE92D4010,
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0xE3A0C301,
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0xE3A03000,
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0xE3A04001,
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0xE3500000,
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0x1B000004,
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0xE5CC3301,
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0xEB000002,
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0x0AFFFFFC,
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0xE8BD4010,
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0xE12FFF1E,
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0xE5CC3208,
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0xE15C20B8,
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0xE0110002,
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0x10200002,
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0x114C00B8,
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0xE5CC4208,
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0xE12FFF1E,
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0xE92D500F,
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0xE3A00301,
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0xE1A0E00F,
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0xE510F004,
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0xE8BD500F,
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0xE25EF004,
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0xE59FD044,
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0xE92D5000,
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0xE14FC000,
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0xE10FE000,
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0xE92D5000,
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0xE3A0C302,
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0xE5DCE09C,
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0xE35E00A5,
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0x1A000004,
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0x05DCE0B4,
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0x021EE080,
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0xE28FE004,
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0x159FF018,
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0x059FF018,
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0xE59FD018,
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0xE8BD5000,
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0xE169F00C,
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0xE8BD5000,
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0xE25EF004,
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0x03007FF0,
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0x09FE2000,
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0x09FFC000,
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0x03007FE0
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};
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variable_desc saveGameStruct[] = {
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{ &DISPCNT , sizeof(u16) },
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{ &DISPSTAT , sizeof(u16) },
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{ &VCOUNT , sizeof(u16) },
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{ &BG0CNT , sizeof(u16) },
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{ &BG1CNT , sizeof(u16) },
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{ &BG2CNT , sizeof(u16) },
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{ &BG3CNT , sizeof(u16) },
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{ &BG0HOFS , sizeof(u16) },
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{ &BG0VOFS , sizeof(u16) },
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{ &BG1HOFS , sizeof(u16) },
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{ &BG1VOFS , sizeof(u16) },
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{ &BG2HOFS , sizeof(u16) },
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{ &BG2VOFS , sizeof(u16) },
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{ &BG3HOFS , sizeof(u16) },
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{ &BG3VOFS , sizeof(u16) },
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{ &BG2PA , sizeof(u16) },
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{ &BG2PB , sizeof(u16) },
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{ &BG2PC , sizeof(u16) },
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{ &BG2PD , sizeof(u16) },
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{ &BG2X_L , sizeof(u16) },
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{ &BG2X_H , sizeof(u16) },
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{ &BG2Y_L , sizeof(u16) },
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{ &BG2Y_H , sizeof(u16) },
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{ &BG3PA , sizeof(u16) },
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{ &BG3PB , sizeof(u16) },
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{ &BG3PC , sizeof(u16) },
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{ &BG3PD , sizeof(u16) },
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{ &BG3X_L , sizeof(u16) },
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{ &BG3X_H , sizeof(u16) },
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{ &BG3Y_L , sizeof(u16) },
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{ &BG3Y_H , sizeof(u16) },
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{ &WIN0H , sizeof(u16) },
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{ &WIN1H , sizeof(u16) },
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{ &WIN0V , sizeof(u16) },
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{ &WIN1V , sizeof(u16) },
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{ &WININ , sizeof(u16) },
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{ &WINOUT , sizeof(u16) },
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{ &MOSAIC , sizeof(u16) },
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{ &BLDMOD , sizeof(u16) },
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{ &COLEV , sizeof(u16) },
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{ &COLY , sizeof(u16) },
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{ &DM0SAD_L , sizeof(u16) },
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{ &DM0SAD_H , sizeof(u16) },
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{ &DM0DAD_L , sizeof(u16) },
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{ &DM0DAD_H , sizeof(u16) },
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{ &DM0CNT_L , sizeof(u16) },
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{ &DM0CNT_H , sizeof(u16) },
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{ &DM1SAD_L , sizeof(u16) },
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{ &DM1SAD_H , sizeof(u16) },
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{ &DM1DAD_L , sizeof(u16) },
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{ &DM1DAD_H , sizeof(u16) },
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{ &DM1CNT_L , sizeof(u16) },
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{ &DM1CNT_H , sizeof(u16) },
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{ &DM2SAD_L , sizeof(u16) },
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{ &DM2SAD_H , sizeof(u16) },
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{ &DM2DAD_L , sizeof(u16) },
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{ &DM2DAD_H , sizeof(u16) },
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{ &DM2CNT_L , sizeof(u16) },
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{ &DM2CNT_H , sizeof(u16) },
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{ &DM3SAD_L , sizeof(u16) },
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{ &DM3SAD_H , sizeof(u16) },
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{ &DM3DAD_L , sizeof(u16) },
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{ &DM3DAD_H , sizeof(u16) },
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{ &DM3CNT_L , sizeof(u16) },
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{ &DM3CNT_H , sizeof(u16) },
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{ &TM0D , sizeof(u16) },
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{ &TM0CNT , sizeof(u16) },
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{ &TM1D , sizeof(u16) },
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{ &TM1CNT , sizeof(u16) },
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{ &TM2D , sizeof(u16) },
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{ &TM2CNT , sizeof(u16) },
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{ &TM3D , sizeof(u16) },
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{ &TM3CNT , sizeof(u16) },
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{ &P1 , sizeof(u16) },
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{ &IE , sizeof(u16) },
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{ &IF , sizeof(u16) },
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{ &IME , sizeof(u16) },
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{ &holdState, sizeof(bool) },
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{ &holdType, sizeof(int) },
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{ &lcdTicks, sizeof(int) },
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|
{ &timer0On , sizeof(bool) },
|
|
{ &timer0Ticks , sizeof(int) },
|
|
{ &timer0Reload , sizeof(int) },
|
|
{ &timer0ClockReload , sizeof(int) },
|
|
{ &timer1On , sizeof(bool) },
|
|
{ &timer1Ticks , sizeof(int) },
|
|
{ &timer1Reload , sizeof(int) },
|
|
{ &timer1ClockReload , sizeof(int) },
|
|
{ &timer2On , sizeof(bool) },
|
|
{ &timer2Ticks , sizeof(int) },
|
|
{ &timer2Reload , sizeof(int) },
|
|
{ &timer2ClockReload , sizeof(int) },
|
|
{ &timer3On , sizeof(bool) },
|
|
{ &timer3Ticks , sizeof(int) },
|
|
{ &timer3Reload , sizeof(int) },
|
|
{ &timer3ClockReload , sizeof(int) },
|
|
{ &dma0Source , sizeof(u32) },
|
|
{ &dma0Dest , sizeof(u32) },
|
|
{ &dma1Source , sizeof(u32) },
|
|
{ &dma1Dest , sizeof(u32) },
|
|
{ &dma2Source , sizeof(u32) },
|
|
{ &dma2Dest , sizeof(u32) },
|
|
{ &dma3Source , sizeof(u32) },
|
|
{ &dma3Dest , sizeof(u32) },
|
|
{ &fxOn, sizeof(bool) },
|
|
{ &windowOn, sizeof(bool) },
|
|
{ &N_FLAG , sizeof(bool) },
|
|
{ &C_FLAG , sizeof(bool) },
|
|
{ &Z_FLAG , sizeof(bool) },
|
|
{ &V_FLAG , sizeof(bool) },
|
|
{ &armState , sizeof(bool) },
|
|
{ &armIrqEnable , sizeof(bool) },
|
|
{ &armNextPC , sizeof(u32) },
|
|
{ &armMode , sizeof(int) },
|
|
{ &saveType , sizeof(int) },
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
//int cpuLoopTicks = 0;
|
|
int cpuSavedTicks = 0;
|
|
|
|
#ifdef PROFILING
|
|
void cpuProfil(char *buf, int size, u32 lowPC, int scale)
|
|
{
|
|
profilBuffer = buf;
|
|
profilSize = size;
|
|
profilLowPC = lowPC;
|
|
profilScale = scale;
|
|
}
|
|
|
|
void cpuEnableProfiling(int hz)
|
|
{
|
|
if(hz == 0)
|
|
hz = 100;
|
|
profilingTicks = profilingTicksReload = 16777216 / hz;
|
|
profSetHertz(hz);
|
|
}
|
|
#endif
|
|
|
|
inline int CPUUpdateTicksAccess32(u32 address)
|
|
{
|
|
return memoryWait32[(address>>24)&15];
|
|
}
|
|
|
|
inline int CPUUpdateTicksAccess16(u32 address)
|
|
{
|
|
return memoryWait[(address>>24)&15];
|
|
}
|
|
|
|
inline int CPUUpdateTicksAccessSeq32(u32 address)
|
|
{
|
|
return memoryWaitSeq32[(address>>24)&15];
|
|
}
|
|
|
|
inline int CPUUpdateTicksAccessSeq16(u32 address)
|
|
{
|
|
return memoryWaitSeq[(address>>24)&15];
|
|
}
|
|
|
|
inline int CPUUpdateTicks()
|
|
{
|
|
int cpuLoopTicks = lcdTicks;
|
|
|
|
if(soundTicks < cpuLoopTicks)
|
|
cpuLoopTicks = soundTicks;
|
|
|
|
if(timer0On && !(TM0CNT & 4) && (timer0Ticks < cpuLoopTicks))
|
|
{
|
|
cpuLoopTicks = timer0Ticks;
|
|
}
|
|
if(timer1On && !(TM1CNT & 4) && (timer1Ticks < cpuLoopTicks))
|
|
{
|
|
cpuLoopTicks = timer1Ticks;
|
|
}
|
|
if(timer2On && !(TM2CNT & 4) && (timer2Ticks < cpuLoopTicks))
|
|
{
|
|
cpuLoopTicks = timer2Ticks;
|
|
}
|
|
if(timer3On && !(TM3CNT & 4) && (timer3Ticks < cpuLoopTicks))
|
|
{
|
|
cpuLoopTicks = timer3Ticks;
|
|
}
|
|
#ifdef PROFILING
|
|
if(profilingTicksReload != 0)
|
|
{
|
|
if(profilingTicks < cpuLoopTicks)
|
|
{
|
|
cpuLoopTicks = profilingTicks;
|
|
}
|
|
}
|
|
#endif
|
|
cpuSavedTicks = cpuLoopTicks;
|
|
return cpuLoopTicks;
|
|
}
|
|
|
|
void CPUUpdateWindow0()
|
|
{
|
|
int x00 = WIN0H>>8;
|
|
int x01 = WIN0H & 255;
|
|
|
|
if(x00 <= x01)
|
|
{
|
|
for(int i = 0; i < 240; i++)
|
|
{
|
|
gfxInWin0[i] = (i >= x00 && i < x01);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(int i = 0; i < 240; i++)
|
|
{
|
|
gfxInWin0[i] = (i >= x00 || i < x01);
|
|
}
|
|
}
|
|
}
|
|
|
|
void CPUUpdateWindow1()
|
|
{
|
|
int x00 = WIN1H>>8;
|
|
int x01 = WIN1H & 255;
|
|
|
|
if(x00 <= x01)
|
|
{
|
|
for(int i = 0; i < 240; i++)
|
|
{
|
|
gfxInWin1[i] = (i >= x00 && i < x01);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for(int i = 0; i < 240; i++)
|
|
{
|
|
gfxInWin1[i] = (i >= x00 || i < x01);
|
|
}
|
|
}
|
|
}
|
|
|
|
extern u32 line0[240];
|
|
extern u32 line1[240];
|
|
extern u32 line2[240];
|
|
extern u32 line3[240];
|
|
|
|
#define CLEAR_ARRAY(a) \
|
|
{\
|
|
u32 *array = (a);\
|
|
for(int i = 0; i < 240; i++) {\
|
|
*array++ = 0x80000000;\
|
|
}\
|
|
}\
|
|
|
|
void CPUUpdateRenderBuffers(bool force)
|
|
{
|
|
if(!(layerEnable & 0x0100) || force)
|
|
{
|
|
CLEAR_ARRAY(line0);
|
|
}
|
|
if(!(layerEnable & 0x0200) || force)
|
|
{
|
|
CLEAR_ARRAY(line1);
|
|
}
|
|
if(!(layerEnable & 0x0400) || force)
|
|
{
|
|
CLEAR_ARRAY(line2);
|
|
}
|
|
if(!(layerEnable & 0x0800) || force)
|
|
{
|
|
CLEAR_ARRAY(line3);
|
|
}
|
|
}
|
|
|
|
static bool CPUWriteState(gzFile gzFile)
|
|
{
|
|
utilWriteInt(gzFile, SAVE_GAME_VERSION);
|
|
|
|
utilGzWrite(gzFile, &rom[0xa0], 16);
|
|
|
|
utilWriteInt(gzFile, useBios);
|
|
|
|
utilGzWrite(gzFile, ®[0], sizeof(reg));
|
|
|
|
utilWriteData(gzFile, saveGameStruct);
|
|
|
|
// new to version 0.7.1
|
|
utilWriteInt(gzFile, stopState);
|
|
// new to version 0.8
|
|
utilWriteInt(gzFile, intState);
|
|
|
|
utilGzWrite(gzFile, internalRAM, 0x8000);
|
|
utilGzWrite(gzFile, paletteRAM, 0x400);
|
|
utilGzWrite(gzFile, workRAM, 0x40000);
|
|
utilGzWrite(gzFile, vram, 0x20000);
|
|
utilGzWrite(gzFile, oam, 0x400);
|
|
utilGzWrite(gzFile, pix, 4*241*162);
|
|
utilGzWrite(gzFile, ioMem, 0x400);
|
|
|
|
eepromSaveGame(gzFile);
|
|
flashSaveGame(gzFile);
|
|
soundSaveGame(gzFile);
|
|
|
|
cheatsSaveGame(gzFile);
|
|
|
|
// version 1.5
|
|
rtcSaveGame(gzFile);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CPUWriteState(const char *file)
|
|
{
|
|
gzFile gzFile = utilGzOpen(file, "wb");
|
|
|
|
if(gzFile == NULL)
|
|
{
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), file);
|
|
return false;
|
|
}
|
|
|
|
bool res = CPUWriteState(gzFile);
|
|
|
|
utilGzClose(gzFile);
|
|
|
|
return res;
|
|
}
|
|
|
|
bool CPUWriteMemState(char *memory, int available)
|
|
{
|
|
gzFile gzFile = utilMemGzOpen(memory, available, "w");
|
|
|
|
if(gzFile == NULL)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool res = CPUWriteState(gzFile);
|
|
|
|
long pos = utilGzMemTell(gzFile)+8;
|
|
|
|
if(pos >= (available))
|
|
res = false;
|
|
|
|
utilGzClose(gzFile);
|
|
|
|
return res;
|
|
}
|
|
|
|
static bool CPUReadState(gzFile gzFile)
|
|
{
|
|
int version = utilReadInt(gzFile);
|
|
|
|
if(version > SAVE_GAME_VERSION || version < SAVE_GAME_VERSION_1)
|
|
{
|
|
systemMessage(MSG_UNSUPPORTED_VBA_SGM,
|
|
N_("Unsupported VisualBoyAdvance save game version %d"),
|
|
version);
|
|
return false;
|
|
}
|
|
|
|
u8 romname[17];
|
|
|
|
utilGzRead(gzFile, romname, 16);
|
|
|
|
if(memcmp(&rom[0xa0], romname, 16) != 0)
|
|
{
|
|
romname[16]=0;
|
|
for(int i = 0; i < 16; i++)
|
|
if(romname[i] < 32)
|
|
romname[i] = 32;
|
|
systemMessage(MSG_CANNOT_LOAD_SGM, N_("Cannot load save game for %s"), romname);
|
|
return false;
|
|
}
|
|
|
|
bool ub = utilReadInt(gzFile) ? true : false;
|
|
|
|
if(ub != useBios)
|
|
{
|
|
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;
|
|
}
|
|
|
|
utilGzRead(gzFile, ®[0], sizeof(reg));
|
|
|
|
utilReadData(gzFile, saveGameStruct);
|
|
|
|
if(version < SAVE_GAME_VERSION_3)
|
|
stopState = false;
|
|
else
|
|
stopState = utilReadInt(gzFile) ? true : false;
|
|
|
|
if(version < SAVE_GAME_VERSION_4)
|
|
intState = false;
|
|
else
|
|
intState = utilReadInt(gzFile) ? true : false;
|
|
|
|
utilGzRead(gzFile, internalRAM, 0x8000);
|
|
utilGzRead(gzFile, paletteRAM, 0x400);
|
|
utilGzRead(gzFile, workRAM, 0x40000);
|
|
utilGzRead(gzFile, vram, 0x20000);
|
|
utilGzRead(gzFile, oam, 0x400);
|
|
if(version < SAVE_GAME_VERSION_6)
|
|
utilGzRead(gzFile, pix, 4*240*160);
|
|
else
|
|
utilGzRead(gzFile, pix, 4*241*162);
|
|
utilGzRead(gzFile, ioMem, 0x400);
|
|
|
|
eepromReadGame(gzFile, version);
|
|
flashReadGame(gzFile, version);
|
|
soundReadGame(gzFile, version);
|
|
|
|
if(version > SAVE_GAME_VERSION_1)
|
|
{
|
|
cheatsReadGame(gzFile);
|
|
}
|
|
if(version > SAVE_GAME_VERSION_6)
|
|
{
|
|
rtcReadGame(gzFile);
|
|
}
|
|
|
|
if(version <= SAVE_GAME_VERSION_7)
|
|
{
|
|
u32 temp;
|
|
#define SWAP(a,b,c) \
|
|
temp = (a);\
|
|
(a) = (b)<<16|(c);\
|
|
(b) = (temp) >> 16;\
|
|
(c) = (temp) & 0xFFFF;
|
|
|
|
SWAP(dma0Source, DM0SAD_H, DM0SAD_L);
|
|
SWAP(dma0Dest, DM0DAD_H, DM0DAD_L);
|
|
SWAP(dma1Source, DM1SAD_H, DM1SAD_L);
|
|
SWAP(dma1Dest, DM1DAD_H, DM1DAD_L);
|
|
SWAP(dma2Source, DM2SAD_H, DM2SAD_L);
|
|
SWAP(dma2Dest, DM2DAD_H, DM2DAD_L);
|
|
SWAP(dma3Source, DM3SAD_H, DM3SAD_L);
|
|
SWAP(dma3Dest, DM3DAD_H, DM3DAD_L);
|
|
}
|
|
|
|
// set pointers!
|
|
layerEnable = layerSettings & DISPCNT;
|
|
|
|
CPUUpdateRender();
|
|
CPUUpdateRenderBuffers(true);
|
|
CPUUpdateWindow0();
|
|
CPUUpdateWindow1();
|
|
gbaSaveType = 0;
|
|
switch(saveType)
|
|
{
|
|
case 0:
|
|
cpuSaveGameFunc = flashSaveDecide;
|
|
break;
|
|
case 1:
|
|
cpuSaveGameFunc = sramWrite;
|
|
gbaSaveType = 1;
|
|
break;
|
|
case 2:
|
|
cpuSaveGameFunc = flashWrite;
|
|
gbaSaveType = 2;
|
|
break;
|
|
default:
|
|
systemMessage(MSG_UNSUPPORTED_SAVE_TYPE,
|
|
N_("Unsupported save type %d"), saveType);
|
|
break;
|
|
}
|
|
if(eepromInUse)
|
|
gbaSaveType = 3;
|
|
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CPUReadMemState(char *memory, int available)
|
|
{
|
|
gzFile gzFile = utilMemGzOpen(memory, available, "r");
|
|
|
|
bool res = CPUReadState(gzFile);
|
|
|
|
utilGzClose(gzFile);
|
|
|
|
return res;
|
|
}
|
|
|
|
bool CPUReadState(const char * file)
|
|
{
|
|
gzFile gzFile = utilGzOpen(file, "rb");
|
|
|
|
if(gzFile == NULL)
|
|
return false;
|
|
|
|
bool res = CPUReadState(gzFile);
|
|
|
|
utilGzClose(gzFile);
|
|
|
|
return res;
|
|
}
|
|
|
|
bool CPUExportEepromFile(const char *fileName)
|
|
{
|
|
if(eepromInUse)
|
|
{
|
|
FILE* file = gen_fopen(fileName, "wb");
|
|
|
|
if(!file)
|
|
{
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"),
|
|
fileName);
|
|
return false;
|
|
}
|
|
|
|
for(int i = 0; i < eepromSize;)
|
|
{
|
|
for(int j = 0; j < 8; j++)
|
|
{
|
|
if(gen_fwrite(&eepromData[i+7-j], 1, 1, file) != 1)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
}
|
|
i += 8;
|
|
}
|
|
gen_fclose(file);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool CPUWriteBatteryFile(const char *fileName)
|
|
{
|
|
if(gbaSaveType == 0)
|
|
{
|
|
if(eepromInUse)
|
|
gbaSaveType = 3;
|
|
else switch(saveType)
|
|
{
|
|
case 1:
|
|
gbaSaveType = 1;
|
|
break;
|
|
case 2:
|
|
gbaSaveType = 2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(gbaSaveType)
|
|
{
|
|
FILE* file = gen_fopen(fileName, "wb");
|
|
|
|
if(!file)
|
|
{
|
|
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"),
|
|
fileName);
|
|
return false;
|
|
}
|
|
|
|
// only save if Flash/Sram in use or EEprom in use
|
|
if(gbaSaveType != 3)
|
|
{
|
|
if(gbaSaveType == 2)
|
|
{
|
|
if(gen_fwrite(flashSaveMemory, 1, flashSize, file) != (int)flashSize)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(gen_fwrite(flashSaveMemory, 1, 0x10000, file) != 0x10000)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(gen_fwrite(eepromData, 1, eepromSize, file) != (int)eepromSize)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
}
|
|
gen_fclose(file);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool CPUReadGSASnapshot(const char *fileName)
|
|
{
|
|
int i;
|
|
FILE* file = gen_fopen(fileName, "rb");
|
|
|
|
if(!file)
|
|
{
|
|
systemMessage(MSG_CANNOT_OPEN_FILE, N_("Cannot open file %s"), fileName);
|
|
return false;
|
|
}
|
|
|
|
// check file size to know what we should read
|
|
// gen_fseek(file, 0, SEEK_END);
|
|
|
|
// long size = ftell(file);
|
|
gen_fseek(file, 0x0, SEEK_SET);
|
|
gen_fread(&i, 1, 4, file);
|
|
gen_fseek(file, i, SEEK_CUR); // Skip SharkPortSave
|
|
gen_fseek(file, 4, SEEK_CUR); // skip some sort of flag
|
|
gen_fread(&i, 1, 4, file); // name length
|
|
gen_fseek(file, i, SEEK_CUR); // skip name
|
|
gen_fread(&i, 1, 4, file); // desc length
|
|
gen_fseek(file, i, SEEK_CUR); // skip desc
|
|
gen_fread(&i, 1, 4, file); // notes length
|
|
gen_fseek(file, i, SEEK_CUR); // skip notes
|
|
int saveSize;
|
|
gen_fread(&saveSize, 1, 4, file); // read length
|
|
saveSize -= 0x1c; // remove header size
|
|
char buffer[17];
|
|
char buffer2[17];
|
|
gen_fread(buffer, 1, 16, file);
|
|
buffer[16] = 0;
|
|
for(i = 0; i < 16; i++)
|
|
if(buffer[i] < 32)
|
|
buffer[i] = 32;
|
|
memcpy(buffer2, &rom[0xa0], 16);
|
|
buffer2[16] = 0;
|
|
for(i = 0; i < 16; i++)
|
|
if(buffer2[i] < 32)
|
|
buffer2[i] = 32;
|
|
if(memcmp(buffer, buffer2, 16))
|
|
{
|
|
systemMessage(MSG_CANNOT_IMPORT_SNAPSHOT_FOR,
|
|
N_("Cannot import snapshot for %s. Current game is %s"),
|
|
buffer,
|
|
buffer2);
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
gen_fseek(file, 12, SEEK_CUR); // skip some flags
|
|
if(saveSize >= 65536)
|
|
{
|
|
if(gen_fread(flashSaveMemory, 1, saveSize, file) != (int)saveSize)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
systemMessage(MSG_UNSUPPORTED_SNAPSHOT_FILE,
|
|
N_("Unsupported snapshot file %s"),
|
|
fileName);
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
gen_fclose(file);
|
|
CPUReset();
|
|
return true;
|
|
}
|
|
|
|
bool CPUWriteGSASnapshot(const char *fileName,
|
|
const char *title,
|
|
const char *desc,
|
|
const char *notes)
|
|
{
|
|
FILE* file = gen_fopen(fileName, "wb");
|
|
|
|
if(!file)
|
|
{
|
|
systemMessage(MSG_CANNOT_OPEN_FILE, N_("Cannot open file %s"), fileName);
|
|
return false;
|
|
}
|
|
|
|
u8 buffer[17];
|
|
|
|
utilPutDword(buffer, 0x0d); // SharkPortSave length
|
|
gen_fwrite(buffer, 1, 4, file);
|
|
gen_fwrite("SharkPortSave", 1, 0x0d, file);
|
|
utilPutDword(buffer, 0x000f0000);
|
|
gen_fwrite(buffer, 1, 4, file); // save type 0x000f0000 = GBA save
|
|
utilPutDword(buffer, strlen(title));
|
|
gen_fwrite(buffer, 1, 4, file); // title length
|
|
gen_fwrite(title, 1, strlen(title), file);
|
|
utilPutDword(buffer, strlen(desc));
|
|
gen_fwrite(buffer, 1, 4, file); // desc length
|
|
gen_fwrite(desc, 1, strlen(desc), file);
|
|
utilPutDword(buffer, strlen(notes));
|
|
gen_fwrite(buffer, 1, 4, file); // notes length
|
|
gen_fwrite(notes, 1, strlen(notes), file);
|
|
int saveSize = 0x10000;
|
|
if(gbaSaveType == 2)
|
|
saveSize = flashSize;
|
|
int totalSize = saveSize + 0x1c;
|
|
|
|
utilPutDword(buffer, totalSize); // length of remainder of save - CRC
|
|
gen_fwrite(buffer, 1, 4, file);
|
|
|
|
char temp[0x2001c];
|
|
memset(temp, 0, 28);
|
|
memcpy(temp, &rom[0xa0], 16); // copy internal name
|
|
temp[0x10] = rom[0xbe]; // reserved area (old checksum)
|
|
temp[0x11] = rom[0xbf]; // reserved area (old checksum)
|
|
temp[0x12] = rom[0xbd]; // complement check
|
|
temp[0x13] = rom[0xb0]; // maker
|
|
temp[0x14] = 1; // 1 save ?
|
|
memcpy(&temp[0x1c], flashSaveMemory, saveSize); // copy save
|
|
gen_fwrite(temp, 1, totalSize, file); // write save + header
|
|
u32 crc = 0;
|
|
|
|
for(int i = 0; i < totalSize; i++)
|
|
{
|
|
crc += ((u32)temp[i] << (crc % 0x18));
|
|
}
|
|
|
|
utilPutDword(buffer, crc);
|
|
gen_fwrite(buffer, 1, 4, file); // CRC?
|
|
|
|
gen_fclose(file);
|
|
return true;
|
|
}
|
|
|
|
bool CPUImportEepromFile(const char *fileName)
|
|
{
|
|
FILE* file = gen_fopen(fileName, "rb");
|
|
|
|
if(!file)
|
|
return false;
|
|
|
|
|
|
// check file size to know what we should read
|
|
gen_fseek(file, 0, SEEK_END);
|
|
|
|
long size = ftell(file);
|
|
|
|
gen_fseek(file, 0, SEEK_SET);
|
|
if(size == 512 || size == 0x2000)
|
|
{
|
|
if(gen_fread(eepromData, 1, size, file) != (int)size)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
for(int i = 0; i < size;)
|
|
{
|
|
u8 tmp = eepromData[i];
|
|
eepromData[i] = eepromData[7-i];
|
|
eepromData[7-i] = tmp;
|
|
i++;
|
|
tmp = eepromData[i];
|
|
eepromData[i] = eepromData[7-i];
|
|
eepromData[7-i] = tmp;
|
|
i++;
|
|
tmp = eepromData[i];
|
|
eepromData[i] = eepromData[7-i];
|
|
eepromData[7-i] = tmp;
|
|
i++;
|
|
tmp = eepromData[i];
|
|
eepromData[i] = eepromData[7-i];
|
|
eepromData[7-i] = tmp;
|
|
i++;
|
|
i += 4;
|
|
}
|
|
}
|
|
else
|
|
return false;
|
|
gen_fclose(file);
|
|
return true;
|
|
}
|
|
|
|
bool CPUReadBatteryFile(const char *fileName)
|
|
{
|
|
FILE* file = gen_fopen(fileName, "rb");
|
|
|
|
if(!file)
|
|
return false;
|
|
|
|
// check file size to know what we should read
|
|
gen_fseek(file, 0, SEEK_END);
|
|
|
|
long size = ftell(file);
|
|
|
|
|
|
gen_fseek(file, 0, SEEK_SET);
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
|
|
if(size == 512 || size == 0x2000)
|
|
{
|
|
if(gen_fread(eepromData, 1, size, file) != (int)size)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(size == 0x20000)
|
|
{
|
|
if(gen_fread(flashSaveMemory, 1, 0x20000, file) != 0x20000)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
flashSetSize(0x20000);
|
|
}
|
|
else
|
|
{
|
|
if(gen_fread(flashSaveMemory, 1, 0x10000, file) != 0x10000)
|
|
{
|
|
gen_fclose(file);
|
|
return false;
|
|
}
|
|
flashSetSize(0x10000);
|
|
}
|
|
}
|
|
gen_fclose(file);
|
|
return true;
|
|
}
|
|
|
|
bool CPUWritePNGFile(const char *fileName)
|
|
{
|
|
return utilWritePNGFile(fileName, 240, 160, pix);
|
|
}
|
|
|
|
bool CPUWriteBMPFile(const char *fileName)
|
|
{
|
|
return utilWriteBMPFile(fileName, 240, 160, pix);
|
|
}
|
|
|
|
bool CPUIsZipFile(const char * file)
|
|
{
|
|
if(strlen(file) > 4)
|
|
{
|
|
char * p = strrchr(file,'.');
|
|
|
|
if(p != NULL)
|
|
{
|
|
if(_stricmp(p, ".zip") == 0)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool CPUIsGBAImage(const char * file)
|
|
{
|
|
cpuIsMultiBoot = false;
|
|
if(strlen(file) > 4)
|
|
{
|
|
char * p = strrchr(file,'.');
|
|
|
|
if(p != NULL)
|
|
{
|
|
if(_stricmp(p, ".gba") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".agb") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".bin") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".elf") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".mb") == 0)
|
|
{
|
|
cpuIsMultiBoot = true;
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool CPUIsGBABios(const char * file)
|
|
{
|
|
if(strlen(file) > 4)
|
|
{
|
|
char * p = strrchr(file,'.');
|
|
|
|
if(p != NULL)
|
|
{
|
|
if(_stricmp(p, ".gba") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".agb") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".bin") == 0)
|
|
return true;
|
|
if(_stricmp(p, ".bios") == 0)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool CPUIsELF(const char *file)
|
|
{
|
|
if(strlen(file) > 4)
|
|
{
|
|
char * p = strrchr(file,'.');
|
|
|
|
if(p != NULL)
|
|
{
|
|
if(_stricmp(p, ".elf") == 0)
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void CPUCleanUp()
|
|
{
|
|
#ifdef PROFILING
|
|
if(profilingTicksReload)
|
|
{
|
|
profCleanup();
|
|
}
|
|
#endif
|
|
|
|
if(rom != NULL)
|
|
{
|
|
free(rom);
|
|
rom = NULL;
|
|
}
|
|
|
|
if(vram != NULL)
|
|
{
|
|
free(vram);
|
|
vram = NULL;
|
|
}
|
|
|
|
if(paletteRAM != NULL)
|
|
{
|
|
free(paletteRAM);
|
|
paletteRAM = NULL;
|
|
}
|
|
|
|
if(internalRAM != NULL)
|
|
{
|
|
free(internalRAM);
|
|
internalRAM = NULL;
|
|
}
|
|
|
|
if(workRAM != NULL)
|
|
{
|
|
free(workRAM);
|
|
workRAM = NULL;
|
|
}
|
|
|
|
if(bios != NULL)
|
|
{
|
|
free(bios);
|
|
bios = NULL;
|
|
}
|
|
|
|
if(pix != NULL)
|
|
{
|
|
// this causes system to CRASH when switching from GBA to GB and then back to GBA
|
|
//free(pix);
|
|
pix = NULL;
|
|
}
|
|
|
|
if(oam != NULL)
|
|
{
|
|
free(oam);
|
|
oam = NULL;
|
|
}
|
|
|
|
if(ioMem != NULL)
|
|
{
|
|
free(ioMem);
|
|
ioMem = NULL;
|
|
}
|
|
|
|
elfCleanUp();
|
|
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
|
|
emulating = 0;
|
|
}
|
|
|
|
int CPULoadRom(const char *szFile)
|
|
{
|
|
int size = 0x2000000;
|
|
|
|
if(rom != NULL)
|
|
{
|
|
CPUCleanUp();
|
|
}
|
|
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
|
|
rom = (u8 *)malloc(0x2000000);
|
|
if(rom == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"ROM");
|
|
return 0;
|
|
}
|
|
workRAM = (u8 *)calloc(1, 0x40000);
|
|
if(workRAM == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"WRAM");
|
|
return 0;
|
|
}
|
|
|
|
u8 *whereToLoad = rom;
|
|
if(cpuIsMultiBoot)
|
|
whereToLoad = workRAM;
|
|
|
|
if(CPUIsELF(szFile))
|
|
{
|
|
FILE* f = gen_fopen(szFile, "rb");
|
|
if(!f)
|
|
{
|
|
systemMessage(MSG_ERROR_OPENING_IMAGE, N_("Error opening image %s"),
|
|
szFile);
|
|
free(rom);
|
|
rom = NULL;
|
|
free(workRAM);
|
|
workRAM = NULL;
|
|
return 0;
|
|
}
|
|
bool res = elfRead(szFile, size, f);
|
|
if(!res || size == 0)
|
|
{
|
|
free(rom);
|
|
rom = NULL;
|
|
free(workRAM);
|
|
workRAM = NULL;
|
|
elfCleanUp();
|
|
return 0;
|
|
}
|
|
}
|
|
else if(!utilLoad(szFile,
|
|
utilIsGBAImage,
|
|
whereToLoad,
|
|
size))
|
|
{
|
|
free(rom);
|
|
rom = NULL;
|
|
free(workRAM);
|
|
workRAM = NULL;
|
|
return 0;
|
|
}
|
|
|
|
u16 *temp = (u16 *)(rom+((size+1)&~1));
|
|
int i;
|
|
for(i = (size+1)&~1; i < 0x2000000; i+=2)
|
|
{
|
|
WRITE16LE(temp, (i >> 1) & 0xFFFF);
|
|
temp++;
|
|
}
|
|
|
|
bios = (u8 *)calloc(1,0x4000);
|
|
if(bios == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"BIOS");
|
|
CPUCleanUp();
|
|
return 0;
|
|
}
|
|
internalRAM = (u8 *)calloc(1,0x8000);
|
|
if(internalRAM == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"IRAM");
|
|
CPUCleanUp();
|
|
return 0;
|
|
}
|
|
paletteRAM = (u8 *)calloc(1,0x400);
|
|
if(paletteRAM == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"PRAM");
|
|
CPUCleanUp();
|
|
return 0;
|
|
}
|
|
vram = (u8 *)calloc(1, 0x20000);
|
|
if(vram == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"VRAM");
|
|
CPUCleanUp();
|
|
return 0;
|
|
}
|
|
oam = (u8 *)calloc(1, 0x400);
|
|
if(oam == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"OAM");
|
|
CPUCleanUp();
|
|
return 0;
|
|
}
|
|
pix = (u8 *)calloc(1, 4 * 241 * 162);
|
|
if(pix == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"PIX");
|
|
CPUCleanUp();
|
|
return 0;
|
|
}
|
|
ioMem = (u8 *)calloc(1, 0x400);
|
|
if(ioMem == NULL)
|
|
{
|
|
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
|
|
"IO");
|
|
CPUCleanUp();
|
|
return 0;
|
|
}
|
|
|
|
CPUUpdateRenderBuffers(true);
|
|
|
|
return size;
|
|
}
|
|
|
|
void CPUUpdateRender()
|
|
{
|
|
switch(DISPCNT & 7)
|
|
{
|
|
case 0:
|
|
if((!fxOn && !windowOn && !(layerEnable & 0x8000)) ||
|
|
cpuDisableSfx)
|
|
renderLine = mode0RenderLine;
|
|
else if(fxOn && !windowOn && !(layerEnable & 0x8000))
|
|
renderLine = mode0RenderLineNoWindow;
|
|
else
|
|
renderLine = mode0RenderLineAll;
|
|
break;
|
|
case 1:
|
|
if((!fxOn && !windowOn && !(layerEnable & 0x8000)) ||
|
|
cpuDisableSfx)
|
|
renderLine = mode1RenderLine;
|
|
else if(fxOn && !windowOn && !(layerEnable & 0x8000))
|
|
renderLine = mode1RenderLineNoWindow;
|
|
else
|
|
renderLine = mode1RenderLineAll;
|
|
break;
|
|
case 2:
|
|
if((!fxOn && !windowOn && !(layerEnable & 0x8000)) ||
|
|
cpuDisableSfx)
|
|
renderLine = mode2RenderLine;
|
|
else if(fxOn && !windowOn && !(layerEnable & 0x8000))
|
|
renderLine = mode2RenderLineNoWindow;
|
|
else
|
|
renderLine = mode2RenderLineAll;
|
|
break;
|
|
case 3:
|
|
if((!fxOn && !windowOn && !(layerEnable & 0x8000)) ||
|
|
cpuDisableSfx)
|
|
renderLine = mode3RenderLine;
|
|
else if(fxOn && !windowOn && !(layerEnable & 0x8000))
|
|
renderLine = mode3RenderLineNoWindow;
|
|
else
|
|
renderLine = mode3RenderLineAll;
|
|
break;
|
|
case 4:
|
|
if((!fxOn && !windowOn && !(layerEnable & 0x8000)) ||
|
|
cpuDisableSfx)
|
|
renderLine = mode4RenderLine;
|
|
else if(fxOn && !windowOn && !(layerEnable & 0x8000))
|
|
renderLine = mode4RenderLineNoWindow;
|
|
else
|
|
renderLine = mode4RenderLineAll;
|
|
break;
|
|
case 5:
|
|
if((!fxOn && !windowOn && !(layerEnable & 0x8000)) ||
|
|
cpuDisableSfx)
|
|
renderLine = mode5RenderLine;
|
|
else if(fxOn && !windowOn && !(layerEnable & 0x8000))
|
|
renderLine = mode5RenderLineNoWindow;
|
|
else
|
|
renderLine = mode5RenderLineAll;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void CPUUpdateCPSR()
|
|
{
|
|
u32 CPSR = reg[16].I & 0x40;
|
|
if(N_FLAG)
|
|
CPSR |= 0x80000000;
|
|
if(Z_FLAG)
|
|
CPSR |= 0x40000000;
|
|
if(C_FLAG)
|
|
CPSR |= 0x20000000;
|
|
if(V_FLAG)
|
|
CPSR |= 0x10000000;
|
|
if(!armState)
|
|
CPSR |= 0x00000020;
|
|
if(!armIrqEnable)
|
|
CPSR |= 0x80;
|
|
CPSR |= (armMode & 0x1F);
|
|
reg[16].I = CPSR;
|
|
}
|
|
|
|
void CPUUpdateFlags(bool breakLoop)
|
|
{
|
|
u32 CPSR = reg[16].I;
|
|
|
|
N_FLAG = (CPSR & 0x80000000) ? true: false;
|
|
Z_FLAG = (CPSR & 0x40000000) ? true: false;
|
|
C_FLAG = (CPSR & 0x20000000) ? true: false;
|
|
V_FLAG = (CPSR & 0x10000000) ? true: false;
|
|
armState = (CPSR & 0x20) ? false : true;
|
|
armIrqEnable = (CPSR & 0x80) ? false : true;
|
|
if(breakLoop)
|
|
{
|
|
if(armIrqEnable && (IF & IE) && (IME & 1))
|
|
{
|
|
CPU_BREAK_LOOP_2;
|
|
}
|
|
}
|
|
}
|
|
|
|
void CPUUpdateFlags()
|
|
{
|
|
CPUUpdateFlags(true);
|
|
}
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
static void CPUSwap(volatile u32 *a, volatile u32 *b)
|
|
{
|
|
volatile u32 c = *b;
|
|
*b = *a;
|
|
*a = c;
|
|
}
|
|
#else
|
|
static void CPUSwap(u32 *a, u32 *b)
|
|
{
|
|
u32 c = *b;
|
|
*b = *a;
|
|
*a = c;
|
|
}
|
|
#endif
|
|
|
|
void CPUSwitchMode(int mode, bool saveState, bool breakLoop)
|
|
{
|
|
// if(armMode == mode)
|
|
// return;
|
|
|
|
CPUUpdateCPSR();
|
|
|
|
switch(armMode)
|
|
{
|
|
case 0x10:
|
|
case 0x1F:
|
|
reg[R13_USR].I = reg[13].I;
|
|
reg[R14_USR].I = reg[14].I;
|
|
reg[17].I = reg[16].I;
|
|
break;
|
|
case 0x11:
|
|
CPUSwap(®[R8_FIQ].I, ®[8].I);
|
|
CPUSwap(®[R9_FIQ].I, ®[9].I);
|
|
CPUSwap(®[R10_FIQ].I, ®[10].I);
|
|
CPUSwap(®[R11_FIQ].I, ®[11].I);
|
|
CPUSwap(®[R12_FIQ].I, ®[12].I);
|
|
reg[R13_FIQ].I = reg[13].I;
|
|
reg[R14_FIQ].I = reg[14].I;
|
|
reg[SPSR_FIQ].I = reg[17].I;
|
|
break;
|
|
case 0x12:
|
|
reg[R13_IRQ].I = reg[13].I;
|
|
reg[R14_IRQ].I = reg[14].I;
|
|
reg[SPSR_IRQ].I = reg[17].I;
|
|
break;
|
|
case 0x13:
|
|
reg[R13_SVC].I = reg[13].I;
|
|
reg[R14_SVC].I = reg[14].I;
|
|
reg[SPSR_SVC].I = reg[17].I;
|
|
break;
|
|
case 0x17:
|
|
reg[R13_ABT].I = reg[13].I;
|
|
reg[R14_ABT].I = reg[14].I;
|
|
reg[SPSR_ABT].I = reg[17].I;
|
|
break;
|
|
case 0x1b:
|
|
reg[R13_UND].I = reg[13].I;
|
|
reg[R14_UND].I = reg[14].I;
|
|
reg[SPSR_UND].I = reg[17].I;
|
|
break;
|
|
}
|
|
|
|
u32 CPSR = reg[16].I;
|
|
u32 SPSR = reg[17].I;
|
|
|
|
switch(mode)
|
|
{
|
|
case 0x10:
|
|
case 0x1F:
|
|
reg[13].I = reg[R13_USR].I;
|
|
reg[14].I = reg[R14_USR].I;
|
|
reg[16].I = SPSR;
|
|
break;
|
|
case 0x11:
|
|
CPUSwap(®[8].I, ®[R8_FIQ].I);
|
|
CPUSwap(®[9].I, ®[R9_FIQ].I);
|
|
CPUSwap(®[10].I, ®[R10_FIQ].I);
|
|
CPUSwap(®[11].I, ®[R11_FIQ].I);
|
|
CPUSwap(®[12].I, ®[R12_FIQ].I);
|
|
reg[13].I = reg[R13_FIQ].I;
|
|
reg[14].I = reg[R14_FIQ].I;
|
|
if(saveState)
|
|
reg[17].I = CPSR;
|
|
else
|
|
reg[17].I = reg[SPSR_FIQ].I;
|
|
break;
|
|
case 0x12:
|
|
reg[13].I = reg[R13_IRQ].I;
|
|
reg[14].I = reg[R14_IRQ].I;
|
|
reg[16].I = SPSR;
|
|
if(saveState)
|
|
reg[17].I = CPSR;
|
|
else
|
|
reg[17].I = reg[SPSR_IRQ].I;
|
|
break;
|
|
case 0x13:
|
|
reg[13].I = reg[R13_SVC].I;
|
|
reg[14].I = reg[R14_SVC].I;
|
|
reg[16].I = SPSR;
|
|
if(saveState)
|
|
reg[17].I = CPSR;
|
|
else
|
|
reg[17].I = reg[SPSR_SVC].I;
|
|
break;
|
|
case 0x17:
|
|
reg[13].I = reg[R13_ABT].I;
|
|
reg[14].I = reg[R14_ABT].I;
|
|
reg[16].I = SPSR;
|
|
if(saveState)
|
|
reg[17].I = CPSR;
|
|
else
|
|
reg[17].I = reg[SPSR_ABT].I;
|
|
break;
|
|
case 0x1b:
|
|
reg[13].I = reg[R13_UND].I;
|
|
reg[14].I = reg[R14_UND].I;
|
|
reg[16].I = SPSR;
|
|
if(saveState)
|
|
reg[17].I = CPSR;
|
|
else
|
|
reg[17].I = reg[SPSR_UND].I;
|
|
break;
|
|
default:
|
|
systemMessage(MSG_UNSUPPORTED_ARM_MODE, N_("Unsupported ARM mode %02x"), mode);
|
|
break;
|
|
}
|
|
armMode = mode;
|
|
CPUUpdateFlags(breakLoop);
|
|
CPUUpdateCPSR();
|
|
}
|
|
|
|
void CPUSwitchMode(int mode, bool saveState)
|
|
{
|
|
CPUSwitchMode(mode, saveState, true);
|
|
}
|
|
|
|
void CPUUndefinedException()
|
|
{
|
|
u32 PC = reg[15].I;
|
|
bool savedArmState = armState;
|
|
CPUSwitchMode(0x1b, true, false);
|
|
reg[14].I = PC - (savedArmState ? 4 : 2);
|
|
reg[15].I = 0x04;
|
|
armState = true;
|
|
armIrqEnable = false;
|
|
armNextPC = 0x04;
|
|
reg[15].I += 4;
|
|
}
|
|
|
|
void CPUSoftwareInterrupt()
|
|
{
|
|
u32 PC = reg[15].I;
|
|
bool savedArmState = armState;
|
|
CPUSwitchMode(0x13, true, false);
|
|
reg[14].I = PC - (savedArmState ? 4 : 2);
|
|
reg[15].I = 0x08;
|
|
armState = true;
|
|
armIrqEnable = false;
|
|
armNextPC = 0x08;
|
|
reg[15].I += 4;
|
|
}
|
|
|
|
void CPUSoftwareInterrupt(int comment)
|
|
{
|
|
static bool disableMessage = false;
|
|
if(armState) comment >>= 16;
|
|
#ifdef BKPT_SUPPORT
|
|
if(comment == 0xff)
|
|
{
|
|
extern void (*dbgOutput)(char *, u32);
|
|
dbgOutput(NULL, reg[0].I);
|
|
return;
|
|
}
|
|
#endif
|
|
#ifdef PROFILING
|
|
if(comment == 0xfe)
|
|
{
|
|
profStartup(reg[0].I, reg[1].I);
|
|
return;
|
|
}
|
|
if(comment == 0xfd)
|
|
{
|
|
profControl(reg[0].I);
|
|
return;
|
|
}
|
|
if(comment == 0xfc)
|
|
{
|
|
profCleanup();
|
|
return;
|
|
}
|
|
if(comment == 0xfb)
|
|
{
|
|
profCount();
|
|
return;
|
|
}
|
|
#endif
|
|
if(comment == 0xfa)
|
|
{
|
|
agbPrintFlush();
|
|
return;
|
|
}
|
|
#ifdef SDL
|
|
if(comment == 0xf9)
|
|
{
|
|
emulating = 0;
|
|
CPU_BREAK_LOOP_2;
|
|
return;
|
|
}
|
|
#endif
|
|
if(useBios)
|
|
{
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_SWI)
|
|
{
|
|
log("SWI: %08x at %08x (0x%08x,0x%08x,0x%08x,VCOUNT = %2d)\n", comment,
|
|
armState ? armNextPC - 4: armNextPC -2,
|
|
reg[0].I,
|
|
reg[1].I,
|
|
reg[2].I,
|
|
VCOUNT);
|
|
}
|
|
#endif
|
|
CPUSoftwareInterrupt();
|
|
return;
|
|
}
|
|
// This would be correct, but it causes problems if uncommented
|
|
// else {
|
|
// biosProtected = 0xe3a02004;
|
|
// }
|
|
|
|
switch(comment)
|
|
{
|
|
case 0x00:
|
|
BIOS_SoftReset();
|
|
break;
|
|
case 0x01:
|
|
BIOS_RegisterRamReset();
|
|
break;
|
|
case 0x02:
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_SWI)
|
|
{
|
|
log("Halt: (VCOUNT = %2d)\n",
|
|
VCOUNT);
|
|
}
|
|
#endif
|
|
holdState = true;
|
|
holdType = -1;
|
|
break;
|
|
case 0x03:
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_SWI)
|
|
{
|
|
log("Stop: (VCOUNT = %2d)\n",
|
|
VCOUNT);
|
|
}
|
|
#endif
|
|
holdState = true;
|
|
holdType = -1;
|
|
stopState = true;
|
|
break;
|
|
case 0x04:
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_SWI)
|
|
{
|
|
log("IntrWait: 0x%08x,0x%08x (VCOUNT = %2d)\n",
|
|
reg[0].I,
|
|
reg[1].I,
|
|
VCOUNT);
|
|
}
|
|
#endif
|
|
CPUSoftwareInterrupt();
|
|
break;
|
|
case 0x05:
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_SWI)
|
|
{
|
|
log("VBlankIntrWait: (VCOUNT = %2d)\n",
|
|
VCOUNT);
|
|
}
|
|
#endif
|
|
CPUSoftwareInterrupt();
|
|
break;
|
|
case 0x06:
|
|
CPUSoftwareInterrupt();
|
|
break;
|
|
case 0x07:
|
|
CPUSoftwareInterrupt();
|
|
break;
|
|
case 0x08:
|
|
BIOS_Sqrt();
|
|
break;
|
|
case 0x09:
|
|
BIOS_ArcTan();
|
|
break;
|
|
case 0x0A:
|
|
BIOS_ArcTan2();
|
|
break;
|
|
case 0x0B:
|
|
BIOS_CpuSet();
|
|
break;
|
|
case 0x0C:
|
|
BIOS_CpuFastSet();
|
|
break;
|
|
case 0x0E:
|
|
BIOS_BgAffineSet();
|
|
break;
|
|
case 0x0F:
|
|
BIOS_ObjAffineSet();
|
|
break;
|
|
case 0x10:
|
|
BIOS_BitUnPack();
|
|
break;
|
|
case 0x11:
|
|
BIOS_LZ77UnCompWram();
|
|
break;
|
|
case 0x12:
|
|
BIOS_LZ77UnCompVram();
|
|
break;
|
|
case 0x13:
|
|
BIOS_HuffUnComp();
|
|
break;
|
|
case 0x14:
|
|
BIOS_RLUnCompWram();
|
|
break;
|
|
case 0x15:
|
|
BIOS_RLUnCompVram();
|
|
break;
|
|
case 0x16:
|
|
BIOS_Diff8bitUnFilterWram();
|
|
break;
|
|
case 0x17:
|
|
BIOS_Diff8bitUnFilterVram();
|
|
break;
|
|
case 0x18:
|
|
BIOS_Diff16bitUnFilter();
|
|
break;
|
|
case 0x19:
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_SWI)
|
|
{
|
|
log("SoundBiasSet: 0x%08x (VCOUNT = %2d)\n",
|
|
reg[0].I,
|
|
VCOUNT);
|
|
}
|
|
#endif
|
|
if(reg[0].I)
|
|
systemSoundPause();
|
|
else
|
|
systemSoundResume();
|
|
break;
|
|
case 0x1F:
|
|
BIOS_MidiKey2Freq();
|
|
break;
|
|
case 0x2A:
|
|
BIOS_SndDriverJmpTableCopy();
|
|
// let it go, because we don't really emulate this function
|
|
default:
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_SWI)
|
|
{
|
|
log("SWI: %08x at %08x (0x%08x,0x%08x,0x%08x,VCOUNT = %2d)\n", comment,
|
|
armState ? armNextPC - 4: armNextPC -2,
|
|
reg[0].I,
|
|
reg[1].I,
|
|
reg[2].I,
|
|
VCOUNT);
|
|
}
|
|
#endif
|
|
|
|
if(!disableMessage)
|
|
{
|
|
systemMessage(MSG_UNSUPPORTED_BIOS_FUNCTION,
|
|
N_("Unsupported BIOS function %02x called from %08x. A BIOS file is needed in order to get correct behaviour."),
|
|
comment,
|
|
armMode ? armNextPC - 4: armNextPC - 2);
|
|
disableMessage = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void CPUCompareVCOUNT()
|
|
{
|
|
if(VCOUNT == (DISPSTAT >> 8))
|
|
{
|
|
DISPSTAT |= 4;
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
|
|
if(DISPSTAT & 0x20)
|
|
{
|
|
IF |= 4;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
DISPSTAT &= 0xFFFB;
|
|
UPDATE_REG(0x4, DISPSTAT);
|
|
}
|
|
}
|
|
|
|
void doDMA(u32 &s, u32 &d, u32 si, u32 di, u32 c, int transfer32)
|
|
{
|
|
int sm = s >> 24;
|
|
int dm = d >> 24;
|
|
|
|
int sc = c;
|
|
|
|
cpuDmaCount = c;
|
|
|
|
if(transfer32)
|
|
{
|
|
s &= 0xFFFFFFFC;
|
|
if(s < 0x02000000 && (reg[15].I >> 24))
|
|
{
|
|
while(c != 0)
|
|
{
|
|
CPUWriteMemory(d, 0);
|
|
d += di;
|
|
c--;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while(c != 0)
|
|
{
|
|
CPUWriteMemory(d, CPUReadMemory(s));
|
|
d += di;
|
|
s += si;
|
|
c--;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
s &= 0xFFFFFFFE;
|
|
si = (int)si >> 1;
|
|
di = (int)di >> 1;
|
|
if(s < 0x02000000 && (reg[15].I >> 24))
|
|
{
|
|
while(c != 0)
|
|
{
|
|
CPUWriteHalfWord(d, 0);
|
|
d += di;
|
|
c--;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while(c != 0)
|
|
{
|
|
cpuDmaLast = CPUReadHalfWord(s);
|
|
CPUWriteHalfWord(d, cpuDmaLast);
|
|
d += di;
|
|
s += si;
|
|
c--;
|
|
}
|
|
}
|
|
}
|
|
|
|
cpuDmaCount = 0;
|
|
|
|
int sw = 1+memoryWaitSeq[sm & 15];
|
|
int dw = 1+memoryWaitSeq[dm & 15];
|
|
|
|
int totalTicks = 0;
|
|
|
|
if(transfer32)
|
|
{
|
|
if(!memory32[sm & 15])
|
|
sw <<= 1;
|
|
if(!memory32[dm & 15])
|
|
dw <<= 1;
|
|
}
|
|
|
|
totalTicks = (sw+dw)*sc;
|
|
|
|
cpuDmaTicksToUpdate += totalTicks;
|
|
|
|
if(*extCpuLoopTicks >= 0)
|
|
{
|
|
CPU_BREAK_LOOP;
|
|
}
|
|
}
|
|
|
|
void CPUCheckDMA(int reason, int dmamask)
|
|
{
|
|
cpuDmaHack = 0;
|
|
// DMA 0
|
|
if((DM0CNT_H & 0x8000) && (dmamask & 1))
|
|
{
|
|
if(((DM0CNT_H >> 12) & 3) == reason)
|
|
{
|
|
u32 sourceIncrement = 4;
|
|
u32 destIncrement = 4;
|
|
switch((DM0CNT_H >> 7) & 3)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
sourceIncrement = (u32)-4;
|
|
break;
|
|
case 2:
|
|
sourceIncrement = 0;
|
|
break;
|
|
}
|
|
switch((DM0CNT_H >> 5) & 3)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
destIncrement = (u32)-4;
|
|
break;
|
|
case 2:
|
|
destIncrement = 0;
|
|
break;
|
|
}
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_DMA0)
|
|
{
|
|
int count = (DM0CNT_L ? DM0CNT_L : 0x4000) << 1;
|
|
if(DM0CNT_H & 0x0400)
|
|
count <<= 1;
|
|
log("DMA0: s=%08x d=%08x c=%04x count=%08x\n", dma0Source, dma0Dest,
|
|
DM0CNT_H,
|
|
count);
|
|
}
|
|
#endif
|
|
doDMA(dma0Source, dma0Dest, sourceIncrement, destIncrement,
|
|
DM0CNT_L ? DM0CNT_L : 0x4000,
|
|
DM0CNT_H & 0x0400);
|
|
cpuDmaHack = 1;
|
|
if(DM0CNT_H & 0x4000)
|
|
{
|
|
IF |= 0x0100;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
|
|
if(((DM0CNT_H >> 5) & 3) == 3)
|
|
{
|
|
dma0Dest = DM0DAD_L | (DM0DAD_H << 16);
|
|
}
|
|
|
|
if(!(DM0CNT_H & 0x0200) || (reason == 0))
|
|
{
|
|
DM0CNT_H &= 0x7FFF;
|
|
UPDATE_REG(0xBA, DM0CNT_H);
|
|
}
|
|
}
|
|
}
|
|
|
|
// DMA 1
|
|
if((DM1CNT_H & 0x8000) && (dmamask & 2))
|
|
{
|
|
if(((DM1CNT_H >> 12) & 3) == reason)
|
|
{
|
|
u32 sourceIncrement = 4;
|
|
u32 destIncrement = 4;
|
|
switch((DM1CNT_H >> 7) & 3)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
sourceIncrement = (u32)-4;
|
|
break;
|
|
case 2:
|
|
sourceIncrement = 0;
|
|
break;
|
|
}
|
|
switch((DM1CNT_H >> 5) & 3)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
destIncrement = (u32)-4;
|
|
break;
|
|
case 2:
|
|
destIncrement = 0;
|
|
break;
|
|
}
|
|
if(reason == 3)
|
|
{
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_DMA1)
|
|
{
|
|
log("DMA1: s=%08x d=%08x c=%04x count=%08x\n", dma1Source, dma1Dest,
|
|
DM1CNT_H,
|
|
16);
|
|
}
|
|
#endif
|
|
doDMA(dma1Source, dma1Dest, sourceIncrement, 0, 4,
|
|
0x0400);
|
|
}
|
|
else
|
|
{
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_DMA1)
|
|
{
|
|
int count = (DM1CNT_L ? DM1CNT_L : 0x4000) << 1;
|
|
if(DM1CNT_H & 0x0400)
|
|
count <<= 1;
|
|
log("DMA1: s=%08x d=%08x c=%04x count=%08x\n", dma1Source, dma1Dest,
|
|
DM1CNT_H,
|
|
count);
|
|
}
|
|
#endif
|
|
doDMA(dma1Source, dma1Dest, sourceIncrement, destIncrement,
|
|
DM1CNT_L ? DM1CNT_L : 0x4000,
|
|
DM1CNT_H & 0x0400);
|
|
}
|
|
cpuDmaHack = 1;
|
|
|
|
if(DM1CNT_H & 0x4000)
|
|
{
|
|
IF |= 0x0200;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
|
|
if(((DM1CNT_H >> 5) & 3) == 3)
|
|
{
|
|
dma1Dest = DM1DAD_L | (DM1DAD_H << 16);
|
|
}
|
|
|
|
if(!(DM1CNT_H & 0x0200) || (reason == 0))
|
|
{
|
|
DM1CNT_H &= 0x7FFF;
|
|
UPDATE_REG(0xC6, DM1CNT_H);
|
|
}
|
|
}
|
|
}
|
|
|
|
// DMA 2
|
|
if((DM2CNT_H & 0x8000) && (dmamask & 4))
|
|
{
|
|
if(((DM2CNT_H >> 12) & 3) == reason)
|
|
{
|
|
u32 sourceIncrement = 4;
|
|
u32 destIncrement = 4;
|
|
switch((DM2CNT_H >> 7) & 3)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
sourceIncrement = (u32)-4;
|
|
break;
|
|
case 2:
|
|
sourceIncrement = 0;
|
|
break;
|
|
}
|
|
switch((DM2CNT_H >> 5) & 3)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
destIncrement = (u32)-4;
|
|
break;
|
|
case 2:
|
|
destIncrement = 0;
|
|
break;
|
|
}
|
|
if(reason == 3)
|
|
{
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_DMA2)
|
|
{
|
|
int count = (4) << 2;
|
|
log("DMA2: s=%08x d=%08x c=%04x count=%08x\n", dma2Source, dma2Dest,
|
|
DM2CNT_H,
|
|
count);
|
|
}
|
|
#endif
|
|
doDMA(dma2Source, dma2Dest, sourceIncrement, 0, 4,
|
|
0x0400);
|
|
}
|
|
else
|
|
{
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_DMA2)
|
|
{
|
|
int count = (DM2CNT_L ? DM2CNT_L : 0x4000) << 1;
|
|
if(DM2CNT_H & 0x0400)
|
|
count <<= 1;
|
|
log("DMA2: s=%08x d=%08x c=%04x count=%08x\n", dma2Source, dma2Dest,
|
|
DM2CNT_H,
|
|
count);
|
|
}
|
|
#endif
|
|
doDMA(dma2Source, dma2Dest, sourceIncrement, destIncrement,
|
|
DM2CNT_L ? DM2CNT_L : 0x4000,
|
|
DM2CNT_H & 0x0400);
|
|
}
|
|
cpuDmaHack = 1;
|
|
if(DM2CNT_H & 0x4000)
|
|
{
|
|
IF |= 0x0400;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
|
|
if(((DM2CNT_H >> 5) & 3) == 3)
|
|
{
|
|
dma2Dest = DM2DAD_L | (DM2DAD_H << 16);
|
|
}
|
|
|
|
if(!(DM2CNT_H & 0x0200) || (reason == 0))
|
|
{
|
|
DM2CNT_H &= 0x7FFF;
|
|
UPDATE_REG(0xD2, DM2CNT_H);
|
|
}
|
|
}
|
|
}
|
|
|
|
// DMA 3
|
|
if((DM3CNT_H & 0x8000) && (dmamask & 8))
|
|
{
|
|
if(((DM3CNT_H >> 12) & 3) == reason)
|
|
{
|
|
u32 sourceIncrement = 4;
|
|
u32 destIncrement = 4;
|
|
switch((DM3CNT_H >> 7) & 3)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
sourceIncrement = (u32)-4;
|
|
break;
|
|
case 2:
|
|
sourceIncrement = 0;
|
|
break;
|
|
}
|
|
switch((DM3CNT_H >> 5) & 3)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
destIncrement = (u32)-4;
|
|
break;
|
|
case 2:
|
|
destIncrement = 0;
|
|
break;
|
|
}
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_DMA3)
|
|
{
|
|
int count = (DM3CNT_L ? DM3CNT_L : 0x10000) << 1;
|
|
if(DM3CNT_H & 0x0400)
|
|
count <<= 1;
|
|
log("DMA3: s=%08x d=%08x c=%04x count=%08x\n", dma3Source, dma3Dest,
|
|
DM3CNT_H,
|
|
count);
|
|
}
|
|
#endif
|
|
doDMA(dma3Source, dma3Dest, sourceIncrement, destIncrement,
|
|
DM3CNT_L ? DM3CNT_L : 0x10000,
|
|
DM3CNT_H & 0x0400);
|
|
if(DM3CNT_H & 0x4000)
|
|
{
|
|
IF |= 0x0800;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
|
|
if(((DM3CNT_H >> 5) & 3) == 3)
|
|
{
|
|
dma3Dest = DM3DAD_L | (DM3DAD_H << 16);
|
|
}
|
|
|
|
if(!(DM3CNT_H & 0x0200) || (reason == 0))
|
|
{
|
|
DM3CNT_H &= 0x7FFF;
|
|
UPDATE_REG(0xDE, DM3CNT_H);
|
|
}
|
|
}
|
|
}
|
|
cpuDmaHack = 0;
|
|
}
|
|
|
|
void CPUUpdateRegister(u32 address, u16 value)
|
|
{
|
|
switch(address)
|
|
{
|
|
case 0x00:
|
|
{
|
|
bool change = ((DISPCNT ^ value) & 0x80) ? true : false;
|
|
bool changeBG = ((DISPCNT ^ value) & 0x0F00) ? true : false;
|
|
DISPCNT = (value & 0xFFF7);
|
|
UPDATE_REG(0x00, DISPCNT);
|
|
layerEnable = layerSettings & value;
|
|
windowOn = (layerEnable & 0x6000) ? true : false;
|
|
if(change && !((value & 0x80)))
|
|
{
|
|
if(!(DISPSTAT & 1))
|
|
{
|
|
lcdTicks = 960;
|
|
// VCOUNT = 0;
|
|
// UPDATE_REG(0x06, VCOUNT);
|
|
DISPSTAT &= 0xFFFC;
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
CPUCompareVCOUNT();
|
|
}
|
|
// (*renderLine)();
|
|
}
|
|
CPUUpdateRender();
|
|
// we only care about changes in BG0-BG3
|
|
if(changeBG)
|
|
CPUUpdateRenderBuffers(false);
|
|
// CPUUpdateTicks();
|
|
}
|
|
break;
|
|
case 0x04:
|
|
DISPSTAT = (value & 0xFF38) | (DISPSTAT & 7);
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
break;
|
|
case 0x06:
|
|
// not writable
|
|
break;
|
|
case 0x08:
|
|
BG0CNT = (value & 0xDFCF);
|
|
UPDATE_REG(0x08, BG0CNT);
|
|
break;
|
|
case 0x0A:
|
|
BG1CNT = (value & 0xDFCF);
|
|
UPDATE_REG(0x0A, BG1CNT);
|
|
break;
|
|
case 0x0C:
|
|
BG2CNT = (value & 0xFFCF);
|
|
UPDATE_REG(0x0C, BG2CNT);
|
|
break;
|
|
case 0x0E:
|
|
BG3CNT = (value & 0xFFCF);
|
|
UPDATE_REG(0x0E, BG3CNT);
|
|
break;
|
|
case 0x10:
|
|
BG0HOFS = value & 511;
|
|
UPDATE_REG(0x10, BG0HOFS);
|
|
break;
|
|
case 0x12:
|
|
BG0VOFS = value & 511;
|
|
UPDATE_REG(0x12, BG0VOFS);
|
|
break;
|
|
case 0x14:
|
|
BG1HOFS = value & 511;
|
|
UPDATE_REG(0x14, BG1HOFS);
|
|
break;
|
|
case 0x16:
|
|
BG1VOFS = value & 511;
|
|
UPDATE_REG(0x16, BG1VOFS);
|
|
break;
|
|
case 0x18:
|
|
BG2HOFS = value & 511;
|
|
UPDATE_REG(0x18, BG2HOFS);
|
|
break;
|
|
case 0x1A:
|
|
BG2VOFS = value & 511;
|
|
UPDATE_REG(0x1A, BG2VOFS);
|
|
break;
|
|
case 0x1C:
|
|
BG3HOFS = value & 511;
|
|
UPDATE_REG(0x1C, BG3HOFS);
|
|
break;
|
|
case 0x1E:
|
|
BG3VOFS = value & 511;
|
|
UPDATE_REG(0x1E, BG3VOFS);
|
|
break;
|
|
case 0x20:
|
|
BG2PA = value;
|
|
UPDATE_REG(0x20, BG2PA);
|
|
break;
|
|
case 0x22:
|
|
BG2PB = value;
|
|
UPDATE_REG(0x22, BG2PB);
|
|
break;
|
|
case 0x24:
|
|
BG2PC = value;
|
|
UPDATE_REG(0x24, BG2PC);
|
|
break;
|
|
case 0x26:
|
|
BG2PD = value;
|
|
UPDATE_REG(0x26, BG2PD);
|
|
break;
|
|
case 0x28:
|
|
BG2X_L = value;
|
|
UPDATE_REG(0x28, BG2X_L);
|
|
gfxBG2Changed |= 1;
|
|
break;
|
|
case 0x2A:
|
|
BG2X_H = (value & 0xFFF);
|
|
UPDATE_REG(0x2A, BG2X_H);
|
|
gfxBG2Changed |= 1;
|
|
break;
|
|
case 0x2C:
|
|
BG2Y_L = value;
|
|
UPDATE_REG(0x2C, BG2Y_L);
|
|
gfxBG2Changed |= 2;
|
|
break;
|
|
case 0x2E:
|
|
BG2Y_H = value & 0xFFF;
|
|
UPDATE_REG(0x2E, BG2Y_H);
|
|
gfxBG2Changed |= 2;
|
|
break;
|
|
case 0x30:
|
|
BG3PA = value;
|
|
UPDATE_REG(0x30, BG3PA);
|
|
break;
|
|
case 0x32:
|
|
BG3PB = value;
|
|
UPDATE_REG(0x32, BG3PB);
|
|
break;
|
|
case 0x34:
|
|
BG3PC = value;
|
|
UPDATE_REG(0x34, BG3PC);
|
|
break;
|
|
case 0x36:
|
|
BG3PD = value;
|
|
UPDATE_REG(0x36, BG3PD);
|
|
break;
|
|
case 0x38:
|
|
BG3X_L = value;
|
|
UPDATE_REG(0x38, BG3X_L);
|
|
gfxBG3Changed |= 1;
|
|
break;
|
|
case 0x3A:
|
|
BG3X_H = value & 0xFFF;
|
|
UPDATE_REG(0x3A, BG3X_H);
|
|
gfxBG3Changed |= 1;
|
|
break;
|
|
case 0x3C:
|
|
BG3Y_L = value;
|
|
UPDATE_REG(0x3C, BG3Y_L);
|
|
gfxBG3Changed |= 2;
|
|
break;
|
|
case 0x3E:
|
|
BG3Y_H = value & 0xFFF;
|
|
UPDATE_REG(0x3E, BG3Y_H);
|
|
gfxBG3Changed |= 2;
|
|
break;
|
|
case 0x40:
|
|
WIN0H = value;
|
|
UPDATE_REG(0x40, WIN0H);
|
|
CPUUpdateWindow0();
|
|
break;
|
|
case 0x42:
|
|
WIN1H = value;
|
|
UPDATE_REG(0x42, WIN1H);
|
|
CPUUpdateWindow1();
|
|
break;
|
|
case 0x44:
|
|
WIN0V = value;
|
|
UPDATE_REG(0x44, WIN0V);
|
|
break;
|
|
case 0x46:
|
|
WIN1V = value;
|
|
UPDATE_REG(0x46, WIN1V);
|
|
break;
|
|
case 0x48:
|
|
WININ = value & 0x3F3F;
|
|
UPDATE_REG(0x48, WININ);
|
|
break;
|
|
case 0x4A:
|
|
WINOUT = value & 0x3F3F;
|
|
UPDATE_REG(0x4A, WINOUT);
|
|
break;
|
|
case 0x4C:
|
|
MOSAIC = value;
|
|
UPDATE_REG(0x4C, MOSAIC);
|
|
break;
|
|
case 0x50:
|
|
BLDMOD = value & 0x3FFF;
|
|
UPDATE_REG(0x50, BLDMOD);
|
|
fxOn = ((BLDMOD>>6)&3) != 0;
|
|
CPUUpdateRender();
|
|
break;
|
|
case 0x52:
|
|
COLEV = value & 0x1F1F;
|
|
UPDATE_REG(0x52, COLEV);
|
|
break;
|
|
case 0x54:
|
|
COLY = value & 0x1F;
|
|
UPDATE_REG(0x54, COLY);
|
|
break;
|
|
case 0x60:
|
|
case 0x62:
|
|
case 0x64:
|
|
case 0x68:
|
|
case 0x6c:
|
|
case 0x70:
|
|
case 0x72:
|
|
case 0x74:
|
|
case 0x78:
|
|
case 0x7c:
|
|
case 0x80:
|
|
case 0x84:
|
|
soundEvent(address&0xFF, (u8)(value & 0xFF));
|
|
soundEvent((address&0xFF)+1, (u8)(value>>8));
|
|
break;
|
|
case 0x82:
|
|
case 0x88:
|
|
case 0xa0:
|
|
case 0xa2:
|
|
case 0xa4:
|
|
case 0xa6:
|
|
case 0x90:
|
|
case 0x92:
|
|
case 0x94:
|
|
case 0x96:
|
|
case 0x98:
|
|
case 0x9a:
|
|
case 0x9c:
|
|
case 0x9e:
|
|
soundEvent(address&0xFF, value);
|
|
break;
|
|
case 0xB0:
|
|
DM0SAD_L = value;
|
|
UPDATE_REG(0xB0, DM0SAD_L);
|
|
break;
|
|
case 0xB2:
|
|
DM0SAD_H = value & 0x07FF;
|
|
UPDATE_REG(0xB2, DM0SAD_H);
|
|
break;
|
|
case 0xB4:
|
|
DM0DAD_L = value;
|
|
UPDATE_REG(0xB4, DM0DAD_L);
|
|
break;
|
|
case 0xB6:
|
|
DM0DAD_H = value & 0x07FF;
|
|
UPDATE_REG(0xB6, DM0DAD_H);
|
|
break;
|
|
case 0xB8:
|
|
DM0CNT_L = value & 0x3FFF;
|
|
UPDATE_REG(0xB8, 0);
|
|
break;
|
|
case 0xBA:
|
|
{
|
|
bool start = ((DM0CNT_H ^ value) & 0x8000) ? true : false;
|
|
value &= 0xF7E0;
|
|
|
|
DM0CNT_H = value;
|
|
UPDATE_REG(0xBA, DM0CNT_H);
|
|
|
|
if(start && (value & 0x8000))
|
|
{
|
|
dma0Source = DM0SAD_L | (DM0SAD_H << 16);
|
|
dma0Dest = DM0DAD_L | (DM0DAD_H << 16);
|
|
CPUCheckDMA(0, 1);
|
|
}
|
|
}
|
|
break;
|
|
case 0xBC:
|
|
DM1SAD_L = value;
|
|
UPDATE_REG(0xBC, DM1SAD_L);
|
|
break;
|
|
case 0xBE:
|
|
DM1SAD_H = value & 0x0FFF;
|
|
UPDATE_REG(0xBE, DM1SAD_H);
|
|
break;
|
|
case 0xC0:
|
|
DM1DAD_L = value;
|
|
UPDATE_REG(0xC0, DM1DAD_L);
|
|
break;
|
|
case 0xC2:
|
|
DM1DAD_H = value & 0x07FF;
|
|
UPDATE_REG(0xC2, DM1DAD_H);
|
|
break;
|
|
case 0xC4:
|
|
DM1CNT_L = value & 0x3FFF;
|
|
UPDATE_REG(0xC4, 0);
|
|
break;
|
|
case 0xC6:
|
|
{
|
|
bool start = ((DM1CNT_H ^ value) & 0x8000) ? true : false;
|
|
value &= 0xF7E0;
|
|
|
|
DM1CNT_H = value;
|
|
UPDATE_REG(0xC6, DM1CNT_H);
|
|
|
|
if(start && (value & 0x8000))
|
|
{
|
|
dma1Source = DM1SAD_L | (DM1SAD_H << 16);
|
|
dma1Dest = DM1DAD_L | (DM1DAD_H << 16);
|
|
CPUCheckDMA(0, 2);
|
|
}
|
|
}
|
|
break;
|
|
case 0xC8:
|
|
DM2SAD_L = value;
|
|
UPDATE_REG(0xC8, DM2SAD_L);
|
|
break;
|
|
case 0xCA:
|
|
DM2SAD_H = value & 0x0FFF;
|
|
UPDATE_REG(0xCA, DM2SAD_H);
|
|
break;
|
|
case 0xCC:
|
|
DM2DAD_L = value;
|
|
UPDATE_REG(0xCC, DM2DAD_L);
|
|
break;
|
|
case 0xCE:
|
|
DM2DAD_H = value & 0x07FF;
|
|
UPDATE_REG(0xCE, DM2DAD_H);
|
|
break;
|
|
case 0xD0:
|
|
DM2CNT_L = value & 0x3FFF;
|
|
UPDATE_REG(0xD0, 0);
|
|
break;
|
|
case 0xD2:
|
|
{
|
|
bool start = ((DM2CNT_H ^ value) & 0x8000) ? true : false;
|
|
|
|
value &= 0xF7E0;
|
|
|
|
DM2CNT_H = value;
|
|
UPDATE_REG(0xD2, DM2CNT_H);
|
|
|
|
if(start && (value & 0x8000))
|
|
{
|
|
dma2Source = DM2SAD_L | (DM2SAD_H << 16);
|
|
dma2Dest = DM2DAD_L | (DM2DAD_H << 16);
|
|
|
|
CPUCheckDMA(0, 4);
|
|
}
|
|
}
|
|
break;
|
|
case 0xD4:
|
|
DM3SAD_L = value;
|
|
UPDATE_REG(0xD4, DM3SAD_L);
|
|
break;
|
|
case 0xD6:
|
|
DM3SAD_H = value & 0x0FFF;
|
|
UPDATE_REG(0xD6, DM3SAD_H);
|
|
break;
|
|
case 0xD8:
|
|
DM3DAD_L = value;
|
|
UPDATE_REG(0xD8, DM3DAD_L);
|
|
break;
|
|
case 0xDA:
|
|
DM3DAD_H = value & 0x0FFF;
|
|
UPDATE_REG(0xDA, DM3DAD_H);
|
|
break;
|
|
case 0xDC:
|
|
DM3CNT_L = value;
|
|
UPDATE_REG(0xDC, 0);
|
|
break;
|
|
case 0xDE:
|
|
{
|
|
bool start = ((DM3CNT_H ^ value) & 0x8000) ? true : false;
|
|
|
|
value &= 0xFFE0;
|
|
|
|
DM3CNT_H = value;
|
|
UPDATE_REG(0xDE, DM3CNT_H);
|
|
|
|
if(start && (value & 0x8000))
|
|
{
|
|
dma3Source = DM3SAD_L | (DM3SAD_H << 16);
|
|
dma3Dest = DM3DAD_L | (DM3DAD_H << 16);
|
|
CPUCheckDMA(0,8);
|
|
}
|
|
}
|
|
break;
|
|
case 0x100:
|
|
timer0Reload = value;
|
|
break;
|
|
case 0x102:
|
|
timer0Ticks = timer0ClockReload = TIMER_TICKS[value & 3];
|
|
if(!timer0On && (value & 0x80))
|
|
{
|
|
// reload the counter
|
|
TM0D = timer0Reload;
|
|
if(timer0ClockReload == 1)
|
|
timer0Ticks = 0x10000 - TM0D;
|
|
UPDATE_REG(0x100, TM0D);
|
|
}
|
|
timer0On = value & 0x80 ? true : false;
|
|
TM0CNT = value & 0xC7;
|
|
UPDATE_REG(0x102, TM0CNT);
|
|
// CPUUpdateTicks();
|
|
break;
|
|
case 0x104:
|
|
timer1Reload = value;
|
|
break;
|
|
case 0x106:
|
|
timer1Ticks = timer1ClockReload = TIMER_TICKS[value & 3];
|
|
if(!timer1On && (value & 0x80))
|
|
{
|
|
// reload the counter
|
|
TM1D = timer1Reload;
|
|
if(timer1ClockReload == 1)
|
|
timer1Ticks = 0x10000 - TM1D;
|
|
UPDATE_REG(0x104, TM1D);
|
|
}
|
|
timer1On = value & 0x80 ? true : false;
|
|
TM1CNT = value & 0xC7;
|
|
UPDATE_REG(0x106, TM1CNT);
|
|
break;
|
|
case 0x108:
|
|
timer2Reload = value;
|
|
break;
|
|
case 0x10A:
|
|
timer2Ticks = timer2ClockReload = TIMER_TICKS[value & 3];
|
|
if(!timer2On && (value & 0x80))
|
|
{
|
|
// reload the counter
|
|
TM2D = timer2Reload;
|
|
if(timer2ClockReload == 1)
|
|
timer2Ticks = 0x10000 - TM2D;
|
|
UPDATE_REG(0x108, TM2D);
|
|
}
|
|
timer2On = value & 0x80 ? true : false;
|
|
TM2CNT = value & 0xC7;
|
|
UPDATE_REG(0x10A, TM2CNT);
|
|
break;
|
|
case 0x10C:
|
|
timer3Reload = value;
|
|
break;
|
|
case 0x10E:
|
|
timer3Ticks = timer3ClockReload = TIMER_TICKS[value & 3];
|
|
if(!timer3On && (value & 0x80))
|
|
{
|
|
// reload the counter
|
|
TM3D = timer3Reload;
|
|
if(timer3ClockReload == 1)
|
|
timer3Ticks = 0x10000 - TM3D;
|
|
UPDATE_REG(0x10C, TM3D);
|
|
}
|
|
timer3On = value & 0x80 ? true : false;
|
|
TM3CNT = value & 0xC7;
|
|
UPDATE_REG(0x10E, TM3CNT);
|
|
break;
|
|
case 0x128:
|
|
if(value & 0x80)
|
|
{
|
|
value &= 0xff7f;
|
|
if(value & 1 && (value & 0x4000))
|
|
{
|
|
UPDATE_REG(0x12a, 0xFF);
|
|
IF |= 0x80;
|
|
UPDATE_REG(0x202, IF);
|
|
value &= 0x7f7f;
|
|
}
|
|
}
|
|
UPDATE_REG(0x128, value);
|
|
break;
|
|
case 0x130:
|
|
P1 |= (value & 0x3FF);
|
|
UPDATE_REG(0x130, P1);
|
|
break;
|
|
case 0x132:
|
|
UPDATE_REG(0x132, value & 0xC3FF);
|
|
break;
|
|
case 0x200:
|
|
IE = value & 0x3FFF;
|
|
UPDATE_REG(0x200, IE);
|
|
if((IME & 1) && (IF & IE) && armIrqEnable)
|
|
{
|
|
CPU_BREAK_LOOP_2;
|
|
}
|
|
break;
|
|
case 0x202:
|
|
IF ^= (value & IF);
|
|
UPDATE_REG(0x202, IF);
|
|
break;
|
|
case 0x204:
|
|
{
|
|
int i;
|
|
memoryWait[0x0e] = memoryWaitSeq[0x0e] = gamepakRamWaitState[value & 3];
|
|
|
|
if(!speedHack)
|
|
{
|
|
memoryWait[0x08] = memoryWait[0x09] = gamepakWaitState[(value >> 2) & 7];
|
|
memoryWaitSeq[0x08] = memoryWaitSeq[0x09] =
|
|
gamepakWaitState0[(value >> 2) & 7];
|
|
|
|
memoryWait[0x0a] = memoryWait[0x0b] = gamepakWaitState[(value >> 5) & 7];
|
|
memoryWaitSeq[0x0a] = memoryWaitSeq[0x0b] =
|
|
gamepakWaitState1[(value >> 5) & 7];
|
|
|
|
memoryWait[0x0c] = memoryWait[0x0d] = gamepakWaitState[(value >> 8) & 7];
|
|
memoryWaitSeq[0x0c] = memoryWaitSeq[0x0d] =
|
|
gamepakWaitState2[(value >> 8) & 7];
|
|
}
|
|
else
|
|
{
|
|
memoryWait[0x08] = memoryWait[0x09] = 4;
|
|
memoryWaitSeq[0x08] = memoryWaitSeq[0x09] = 2;
|
|
|
|
memoryWait[0x0a] = memoryWait[0x0b] = 4;
|
|
memoryWaitSeq[0x0a] = memoryWaitSeq[0x0b] = 4;
|
|
|
|
memoryWait[0x0c] = memoryWait[0x0d] = 4;
|
|
memoryWaitSeq[0x0c] = memoryWaitSeq[0x0d] = 8;
|
|
}
|
|
for(i = 0; i < 16; i++)
|
|
{
|
|
memoryWaitFetch32[i] = memoryWait32[i] = memoryWait[i] *
|
|
(memory32[i] ? 1 : 2);
|
|
memoryWaitFetch[i] = memoryWait[i];
|
|
}
|
|
memoryWaitFetch32[3] += 1;
|
|
memoryWaitFetch32[2] += 3;
|
|
|
|
if(value & 0x4000)
|
|
{
|
|
for(i = 8; i < 16; i++)
|
|
{
|
|
memoryWaitFetch32[i] = 2*cpuMemoryWait[i];
|
|
memoryWaitFetch[i] = cpuMemoryWait[i];
|
|
}
|
|
}
|
|
UPDATE_REG(0x204, value);
|
|
}
|
|
break;
|
|
case 0x208:
|
|
IME = value & 1;
|
|
UPDATE_REG(0x208, IME);
|
|
if((IME & 1) && (IF & IE) && armIrqEnable)
|
|
{
|
|
CPU_BREAK_LOOP_2;
|
|
}
|
|
break;
|
|
case 0x300:
|
|
if(value != 0)
|
|
value &= 0xFFFE;
|
|
UPDATE_REG(0x300, value);
|
|
break;
|
|
default:
|
|
UPDATE_REG(address&0x3FE, value);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void CPUWriteHalfWord(u32 address, u16 value)
|
|
{
|
|
#ifdef DEV_VERSION
|
|
if(address & 1)
|
|
{
|
|
if(systemVerbose & VERBOSE_UNALIGNED_MEMORY)
|
|
{
|
|
log("Unaligned halfword write: %04x to %08x from %08x\n",
|
|
value,
|
|
address,
|
|
armMode ? armNextPC - 4 : armNextPC - 2);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
switch(address >> 24)
|
|
{
|
|
case 2:
|
|
#ifdef SDL
|
|
if(*((u16 *)&freezeWorkRAM[address & 0x3FFFE]))
|
|
cheatsWriteHalfWord((u16 *)&workRAM[address & 0x3FFFE],
|
|
value,
|
|
*((u16 *)&freezeWorkRAM[address & 0x3FFFE]));
|
|
else
|
|
#endif
|
|
WRITE16LE(((u16 *)&workRAM[address & 0x3FFFE]),value);
|
|
break;
|
|
case 3:
|
|
#ifdef SDL
|
|
if(*((u16 *)&freezeInternalRAM[address & 0x7ffe]))
|
|
cheatsWriteHalfWord((u16 *)&internalRAM[address & 0x7ffe],
|
|
value,
|
|
*((u16 *)&freezeInternalRAM[address & 0x7ffe]));
|
|
else
|
|
#endif
|
|
WRITE16LE(((u16 *)&internalRAM[address & 0x7ffe]), value);
|
|
break;
|
|
case 4:
|
|
CPUUpdateRegister(address & 0x3fe, value);
|
|
break;
|
|
case 5:
|
|
WRITE16LE(((u16 *)&paletteRAM[address & 0x3fe]), value);
|
|
break;
|
|
case 6:
|
|
if(address & 0x10000)
|
|
WRITE16LE(((u16 *)&vram[address & 0x17ffe]), value);
|
|
else
|
|
WRITE16LE(((u16 *)&vram[address & 0x1fffe]), value);
|
|
break;
|
|
case 7:
|
|
WRITE16LE(((u16 *)&oam[address & 0x3fe]), value);
|
|
break;
|
|
case 8:
|
|
case 9:
|
|
if(address == 0x80000c4 || address == 0x80000c6 || address == 0x80000c8)
|
|
{
|
|
if(!rtcWrite(address, value))
|
|
goto unwritable;
|
|
}
|
|
else if(!agbPrintWrite(address, value)) goto unwritable;
|
|
break;
|
|
case 13:
|
|
if(cpuEEPROMEnabled)
|
|
{
|
|
eepromWrite(address, (u8)value);
|
|
break;
|
|
}
|
|
goto unwritable;
|
|
case 14:
|
|
if(!eepromInUse | cpuSramEnabled | cpuFlashEnabled)
|
|
{
|
|
(*cpuSaveGameFunc)(address, (u8)value);
|
|
break;
|
|
}
|
|
goto unwritable;
|
|
default:
|
|
unwritable:
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_ILLEGAL_WRITE)
|
|
{
|
|
log("Illegal halfword write: %04x to %08x from %08x\n",
|
|
value,
|
|
address,
|
|
armMode ? armNextPC - 4 : armNextPC - 2);
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
void CPUWriteByte(u32 address, u8 b)
|
|
{
|
|
switch(address >> 24)
|
|
{
|
|
case 2:
|
|
#ifdef SDL
|
|
if(freezeWorkRAM[address & 0x3FFFF])
|
|
cheatsWriteByte(&workRAM[address & 0x3FFFF], b);
|
|
else
|
|
#endif
|
|
workRAM[address & 0x3FFFF] = b;
|
|
break;
|
|
case 3:
|
|
#ifdef SDL
|
|
if(freezeInternalRAM[address & 0x7fff])
|
|
cheatsWriteByte(&internalRAM[address & 0x7fff], b);
|
|
else
|
|
#endif
|
|
internalRAM[address & 0x7fff] = b;
|
|
break;
|
|
case 4:
|
|
switch(address & 0x3FF)
|
|
{
|
|
case 0x301:
|
|
if(b == 0x80)
|
|
stopState = true;
|
|
holdState = 1;
|
|
holdType = -1;
|
|
break;
|
|
case 0x60:
|
|
case 0x61:
|
|
case 0x62:
|
|
case 0x63:
|
|
case 0x64:
|
|
case 0x65:
|
|
case 0x68:
|
|
case 0x69:
|
|
case 0x6c:
|
|
case 0x6d:
|
|
case 0x70:
|
|
case 0x71:
|
|
case 0x72:
|
|
case 0x73:
|
|
case 0x74:
|
|
case 0x75:
|
|
case 0x78:
|
|
case 0x79:
|
|
case 0x7c:
|
|
case 0x7d:
|
|
case 0x80:
|
|
case 0x81:
|
|
case 0x84:
|
|
case 0x85:
|
|
case 0x90:
|
|
case 0x91:
|
|
case 0x92:
|
|
case 0x93:
|
|
case 0x94:
|
|
case 0x95:
|
|
case 0x96:
|
|
case 0x97:
|
|
case 0x98:
|
|
case 0x99:
|
|
case 0x9a:
|
|
case 0x9b:
|
|
case 0x9c:
|
|
case 0x9d:
|
|
case 0x9e:
|
|
case 0x9f:
|
|
soundEvent(address&0xFF, b);
|
|
break;
|
|
default:
|
|
// if(address & 1) {
|
|
// CPUWriteHalfWord(address-1, (CPUReadHalfWord(address-1)&0x00FF)|((int)b<<8));
|
|
// } else
|
|
if(address & 1)
|
|
CPUUpdateRegister(address & 0x3fe,
|
|
((READ16LE(((u16 *)&ioMem[address & 0x3fe])))
|
|
& 0x00FF) |
|
|
b<<8);
|
|
else
|
|
CPUUpdateRegister(address & 0x3fe,
|
|
((READ16LE(((u16 *)&ioMem[address & 0x3fe])) & 0xFF00) | b));
|
|
}
|
|
break;
|
|
case 5:
|
|
// no need to switch
|
|
*((u16 *)&paletteRAM[address & 0x3FE]) = (b << 8) | b;
|
|
break;
|
|
case 6:
|
|
// no need to switch
|
|
if(address & 0x10000)
|
|
*((u16 *)&vram[address & 0x17FFE]) = (b << 8) | b;
|
|
else
|
|
*((u16 *)&vram[address & 0x1FFFE]) = (b << 8) | b;
|
|
break;
|
|
case 7:
|
|
// no need to switch
|
|
*((u16 *)&oam[address & 0x3FE]) = (b << 8) | b;
|
|
break;
|
|
case 13:
|
|
if(cpuEEPROMEnabled)
|
|
{
|
|
eepromWrite(address, b);
|
|
break;
|
|
}
|
|
goto unwritable;
|
|
case 14:
|
|
if(!eepromInUse | cpuSramEnabled | cpuFlashEnabled)
|
|
{
|
|
(*cpuSaveGameFunc)(address, b);
|
|
break;
|
|
}
|
|
// default
|
|
default:
|
|
unwritable:
|
|
#ifdef DEV_VERSION
|
|
if(systemVerbose & VERBOSE_ILLEGAL_WRITE)
|
|
{
|
|
log("Illegal byte write: %02x to %08x from %08x\n",
|
|
b,
|
|
address,
|
|
armMode ? armNextPC - 4 : armNextPC -2 );
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
u8 cpuBitsSet[256];
|
|
u8 cpuLowestBitSet[256];
|
|
|
|
void CPUInit(const char *biosFileName, bool useBiosFile)
|
|
{
|
|
#ifdef WORDS_BIGENDIAN
|
|
if(!cpuBiosSwapped)
|
|
{
|
|
for(unsigned int i = 0; i < sizeof(myROM)/4; i++)
|
|
{
|
|
WRITE32LE(&myROM[i], myROM[i]);
|
|
}
|
|
cpuBiosSwapped = true;
|
|
}
|
|
#endif
|
|
gbaSaveType = 0;
|
|
eepromInUse = 0;
|
|
saveType = 0;
|
|
useBios = false;
|
|
|
|
if(useBiosFile)
|
|
{
|
|
#if 0
|
|
int size = 0x4000;
|
|
if(utilLoad(biosFileName,
|
|
CPUIsGBABios,
|
|
bios,
|
|
size))
|
|
{
|
|
if(size == 0x4000)
|
|
useBios = true;
|
|
else
|
|
systemMessage(MSG_INVALID_BIOS_FILE_SIZE, N_("Invalid BIOS file size"));
|
|
}
|
|
#else
|
|
FILE* bfil;
|
|
int res;
|
|
bfil = gen_fopen(biosFileName, "rb");
|
|
if ( bfil == NULL )
|
|
{
|
|
useBios = false;
|
|
}
|
|
else
|
|
{
|
|
res = gen_fread(bios, 1, 0x4000, bfil);
|
|
gen_fclose(bfil);
|
|
useBios = true;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if(!useBios)
|
|
{
|
|
memcpy(bios, myROM, sizeof(myROM));
|
|
}
|
|
|
|
int i = 0;
|
|
|
|
biosProtected[0] = 0x00;
|
|
biosProtected[1] = 0xf0;
|
|
biosProtected[2] = 0x29;
|
|
biosProtected[3] = 0xe1;
|
|
|
|
for(i = 0; i < 256; i++)
|
|
{
|
|
int count = 0;
|
|
int j;
|
|
for(j = 0; j < 8; j++)
|
|
if(i & (1 << j))
|
|
count++;
|
|
cpuBitsSet[i] = count;
|
|
|
|
for(j = 0; j < 8; j++)
|
|
if(i & (1 << j))
|
|
break;
|
|
cpuLowestBitSet[i] = j;
|
|
}
|
|
|
|
for(i = 0; i < 0x400; i++)
|
|
ioReadable[i] = true;
|
|
for(i = 0x10; i < 0x48; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x4c; i < 0x50; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x54; i < 0x60; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x8c; i < 0x90; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0xa0; i < 0xb8; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0xbc; i < 0xc4; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0xc8; i < 0xd0; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0xd4; i < 0xdc; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0xe0; i < 0x100; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x110; i < 0x120; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x12c; i < 0x130; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x138; i < 0x140; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x144; i < 0x150; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x15c; i < 0x200; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x20c; i < 0x300; i++)
|
|
ioReadable[i] = false;
|
|
for(i = 0x304; i < 0x400; i++)
|
|
ioReadable[i] = false;
|
|
|
|
#if 0
|
|
*((u16 *)&rom[0x1fe209c]) = 0xdffa; // SWI 0xFA
|
|
*((u16 *)&rom[0x1fe209e]) = 0x4770; // BX LR
|
|
#endif
|
|
|
|
}
|
|
|
|
void CPUReset()
|
|
{
|
|
if(gbaSaveType == 0)
|
|
{
|
|
if(eepromInUse)
|
|
gbaSaveType = 3;
|
|
else
|
|
switch(saveType)
|
|
{
|
|
case 1:
|
|
gbaSaveType = 1;
|
|
break;
|
|
case 2:
|
|
gbaSaveType = 2;
|
|
break;
|
|
}
|
|
}
|
|
rtcReset();
|
|
// clen registers
|
|
memset(®[0], 0, sizeof(reg));
|
|
// clean OAM
|
|
memset(oam, 0, 0x400);
|
|
// clean palette
|
|
memset(paletteRAM, 0, 0x400);
|
|
// clean picture
|
|
memset(pix, 0, 4*160*240);
|
|
// clean vram
|
|
memset(vram, 0, 0x20000);
|
|
// clean io memory
|
|
memset(ioMem, 0, 0x400);
|
|
|
|
DISPCNT = 0x0080;
|
|
DISPSTAT = 0x0000;
|
|
VCOUNT = 0x0000;
|
|
BG0CNT = 0x0000;
|
|
BG1CNT = 0x0000;
|
|
BG2CNT = 0x0000;
|
|
BG3CNT = 0x0000;
|
|
BG0HOFS = 0x0000;
|
|
BG0VOFS = 0x0000;
|
|
BG1HOFS = 0x0000;
|
|
BG1VOFS = 0x0000;
|
|
BG2HOFS = 0x0000;
|
|
BG2VOFS = 0x0000;
|
|
BG3HOFS = 0x0000;
|
|
BG3VOFS = 0x0000;
|
|
BG2PA = 0x0100;
|
|
BG2PB = 0x0000;
|
|
BG2PC = 0x0000;
|
|
BG2PD = 0x0100;
|
|
BG2X_L = 0x0000;
|
|
BG2X_H = 0x0000;
|
|
BG2Y_L = 0x0000;
|
|
BG2Y_H = 0x0000;
|
|
BG3PA = 0x0100;
|
|
BG3PB = 0x0000;
|
|
BG3PC = 0x0000;
|
|
BG3PD = 0x0100;
|
|
BG3X_L = 0x0000;
|
|
BG3X_H = 0x0000;
|
|
BG3Y_L = 0x0000;
|
|
BG3Y_H = 0x0000;
|
|
WIN0H = 0x0000;
|
|
WIN1H = 0x0000;
|
|
WIN0V = 0x0000;
|
|
WIN1V = 0x0000;
|
|
WININ = 0x0000;
|
|
WINOUT = 0x0000;
|
|
MOSAIC = 0x0000;
|
|
BLDMOD = 0x0000;
|
|
COLEV = 0x0000;
|
|
COLY = 0x0000;
|
|
DM0SAD_L = 0x0000;
|
|
DM0SAD_H = 0x0000;
|
|
DM0DAD_L = 0x0000;
|
|
DM0DAD_H = 0x0000;
|
|
DM0CNT_L = 0x0000;
|
|
DM0CNT_H = 0x0000;
|
|
DM1SAD_L = 0x0000;
|
|
DM1SAD_H = 0x0000;
|
|
DM1DAD_L = 0x0000;
|
|
DM1DAD_H = 0x0000;
|
|
DM1CNT_L = 0x0000;
|
|
DM1CNT_H = 0x0000;
|
|
DM2SAD_L = 0x0000;
|
|
DM2SAD_H = 0x0000;
|
|
DM2DAD_L = 0x0000;
|
|
DM2DAD_H = 0x0000;
|
|
DM2CNT_L = 0x0000;
|
|
DM2CNT_H = 0x0000;
|
|
DM3SAD_L = 0x0000;
|
|
DM3SAD_H = 0x0000;
|
|
DM3DAD_L = 0x0000;
|
|
DM3DAD_H = 0x0000;
|
|
DM3CNT_L = 0x0000;
|
|
DM3CNT_H = 0x0000;
|
|
TM0D = 0x0000;
|
|
TM0CNT = 0x0000;
|
|
TM1D = 0x0000;
|
|
TM1CNT = 0x0000;
|
|
TM2D = 0x0000;
|
|
TM2CNT = 0x0000;
|
|
TM3D = 0x0000;
|
|
TM3CNT = 0x0000;
|
|
P1 = 0x03FF;
|
|
IE = 0x0000;
|
|
IF = 0x0000;
|
|
IME = 0x0000;
|
|
|
|
armMode = 0x1F;
|
|
|
|
if(cpuIsMultiBoot)
|
|
{
|
|
reg[13].I = 0x03007F00;
|
|
reg[15].I = 0x02000000;
|
|
reg[16].I = 0x00000000;
|
|
reg[R13_IRQ].I = 0x03007FA0;
|
|
reg[R13_SVC].I = 0x03007FE0;
|
|
armIrqEnable = true;
|
|
}
|
|
else
|
|
{
|
|
if(useBios && !skipBios)
|
|
{
|
|
reg[15].I = 0x00000000;
|
|
armMode = 0x13;
|
|
armIrqEnable = false;
|
|
}
|
|
else
|
|
{
|
|
reg[13].I = 0x03007F00;
|
|
reg[15].I = 0x08000000;
|
|
reg[16].I = 0x00000000;
|
|
reg[R13_IRQ].I = 0x03007FA0;
|
|
reg[R13_SVC].I = 0x03007FE0;
|
|
armIrqEnable = true;
|
|
}
|
|
}
|
|
armState = true;
|
|
C_FLAG = V_FLAG = N_FLAG = Z_FLAG = false;
|
|
UPDATE_REG(0x00, DISPCNT);
|
|
UPDATE_REG(0x20, BG2PA);
|
|
UPDATE_REG(0x26, BG2PD);
|
|
UPDATE_REG(0x30, BG3PA);
|
|
UPDATE_REG(0x36, BG3PD);
|
|
UPDATE_REG(0x130, P1);
|
|
UPDATE_REG(0x88, 0x200);
|
|
|
|
// disable FIQ
|
|
reg[16].I |= 0x40;
|
|
|
|
CPUUpdateCPSR();
|
|
|
|
armNextPC = reg[15].I;
|
|
reg[15].I += 4;
|
|
|
|
// reset internal state
|
|
holdState = false;
|
|
holdType = 0;
|
|
|
|
biosProtected[0] = 0x00;
|
|
biosProtected[1] = 0xf0;
|
|
biosProtected[2] = 0x29;
|
|
biosProtected[3] = 0xe1;
|
|
|
|
lcdTicks = 960;
|
|
timer0On = false;
|
|
timer0Ticks = 0;
|
|
timer0Reload = 0;
|
|
timer0ClockReload = 0;
|
|
timer1On = false;
|
|
timer1Ticks = 0;
|
|
timer1Reload = 0;
|
|
timer1ClockReload = 0;
|
|
timer2On = false;
|
|
timer2Ticks = 0;
|
|
timer2Reload = 0;
|
|
timer2ClockReload = 0;
|
|
timer3On = false;
|
|
timer3Ticks = 0;
|
|
timer3Reload = 0;
|
|
timer3ClockReload = 0;
|
|
dma0Source = 0;
|
|
dma0Dest = 0;
|
|
dma1Source = 0;
|
|
dma1Dest = 0;
|
|
dma2Source = 0;
|
|
dma2Dest = 0;
|
|
dma3Source = 0;
|
|
dma3Dest = 0;
|
|
cpuSaveGameFunc = flashSaveDecide;
|
|
renderLine = mode0RenderLine;
|
|
fxOn = false;
|
|
windowOn = false;
|
|
frameCount = 0;
|
|
saveType = 0;
|
|
layerEnable = DISPCNT & layerSettings;
|
|
|
|
CPUUpdateRenderBuffers(true);
|
|
|
|
for(int i = 0; i < 256; i++)
|
|
{
|
|
map[i].address = (u8 *)&dummyAddress;
|
|
map[i].mask = 0;
|
|
}
|
|
|
|
map[0].address = bios;
|
|
map[0].mask = 0x3FFF;
|
|
map[2].address = workRAM;
|
|
map[2].mask = 0x3FFFF;
|
|
map[3].address = internalRAM;
|
|
map[3].mask = 0x7FFF;
|
|
map[4].address = ioMem;
|
|
map[4].mask = 0x3FF;
|
|
map[5].address = paletteRAM;
|
|
map[5].mask = 0x3FF;
|
|
map[6].address = vram;
|
|
map[6].mask = 0x1FFFF;
|
|
map[7].address = oam;
|
|
map[7].mask = 0x3FF;
|
|
map[8].address = rom;
|
|
map[8].mask = 0x1FFFFFF;
|
|
map[9].address = rom;
|
|
map[9].mask = 0x1FFFFFF;
|
|
map[10].address = rom;
|
|
map[10].mask = 0x1FFFFFF;
|
|
map[12].address = rom;
|
|
map[12].mask = 0x1FFFFFF;
|
|
map[14].address = flashSaveMemory;
|
|
map[14].mask = 0xFFFF;
|
|
|
|
eepromReset();
|
|
flashReset();
|
|
|
|
soundReset();
|
|
|
|
CPUUpdateWindow0();
|
|
CPUUpdateWindow1();
|
|
|
|
// make sure registers are correctly initialized if not using BIOS
|
|
if(!useBios)
|
|
{
|
|
if(cpuIsMultiBoot)
|
|
BIOS_RegisterRamReset(0xfe);
|
|
else
|
|
BIOS_RegisterRamReset(0xff);
|
|
}
|
|
else
|
|
{
|
|
if(cpuIsMultiBoot)
|
|
BIOS_RegisterRamReset(0xfe);
|
|
}
|
|
|
|
switch(cpuSaveType)
|
|
{
|
|
case 0: // automatic
|
|
cpuSramEnabled = true;
|
|
cpuFlashEnabled = true;
|
|
cpuEEPROMEnabled = true;
|
|
cpuEEPROMSensorEnabled = false;
|
|
break;
|
|
case 1: // EEPROM
|
|
cpuSramEnabled = false;
|
|
cpuFlashEnabled = false;
|
|
cpuEEPROMEnabled = true;
|
|
cpuEEPROMSensorEnabled = false;
|
|
break;
|
|
case 2: // SRAM
|
|
cpuSramEnabled = true;
|
|
cpuFlashEnabled = false;
|
|
cpuEEPROMEnabled = false;
|
|
cpuEEPROMSensorEnabled = false;
|
|
cpuSaveGameFunc = sramWrite;
|
|
break;
|
|
case 3: // FLASH
|
|
cpuSramEnabled = false;
|
|
cpuFlashEnabled = true;
|
|
cpuEEPROMEnabled = false;
|
|
cpuEEPROMSensorEnabled = false;
|
|
cpuSaveGameFunc = flashWrite;
|
|
break;
|
|
case 4: // EEPROM+Sensor
|
|
cpuSramEnabled = false;
|
|
cpuFlashEnabled = false;
|
|
cpuEEPROMEnabled = true;
|
|
cpuEEPROMSensorEnabled = true;
|
|
break;
|
|
case 5: // NONE
|
|
cpuSramEnabled = false;
|
|
cpuFlashEnabled = false;
|
|
cpuEEPROMEnabled = false;
|
|
cpuEEPROMSensorEnabled = false;
|
|
break;
|
|
}
|
|
|
|
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
|
|
|
|
lastTime = systemGetClock();
|
|
}
|
|
|
|
void CPUInterrupt()
|
|
{
|
|
u32 PC = reg[15].I;
|
|
bool savedState = armState;
|
|
CPUSwitchMode(0x12, true, false);
|
|
reg[14].I = PC;
|
|
if(!savedState)
|
|
reg[14].I += 2;
|
|
reg[15].I = 0x18;
|
|
armState = true;
|
|
armIrqEnable = false;
|
|
|
|
armNextPC = reg[15].I;
|
|
reg[15].I += 4;
|
|
|
|
// if(!holdState)
|
|
biosProtected[0] = 0x02;
|
|
biosProtected[1] = 0xc0;
|
|
biosProtected[2] = 0x5e;
|
|
biosProtected[3] = 0xe5;
|
|
}
|
|
|
|
void log(const char *defaultMsg, ...)
|
|
{
|
|
#if 0
|
|
char buffer[2048];
|
|
va_list valist;
|
|
|
|
va_start(valist, defaultMsg);
|
|
vsprintf(buffer, defaultMsg, valist);
|
|
|
|
if(out == NULL)
|
|
{
|
|
out = gen_fopen("trace.log","w");
|
|
}
|
|
|
|
fputs(buffer, out);
|
|
|
|
va_end(valist);
|
|
#endif
|
|
}
|
|
|
|
void CPULoop(int ticks)
|
|
{
|
|
int clockTicks;
|
|
int cpuLoopTicks = 0;
|
|
int timerOverflow = 0;
|
|
// variables used by the CPU core
|
|
|
|
extCpuLoopTicks = &cpuLoopTicks;
|
|
extClockTicks = &clockTicks;
|
|
extTicks = &ticks;
|
|
|
|
cpuLoopTicks = CPUUpdateTicks();
|
|
if(cpuLoopTicks > ticks)
|
|
{
|
|
cpuLoopTicks = ticks;
|
|
cpuSavedTicks = ticks;
|
|
}
|
|
|
|
if(intState)
|
|
{
|
|
cpuLoopTicks = 5;
|
|
cpuSavedTicks = 5;
|
|
}
|
|
|
|
for(;;)
|
|
{
|
|
#ifndef FINAL_VERSION
|
|
if(systemDebug)
|
|
{
|
|
if(systemDebug >= 10 && !holdState)
|
|
{
|
|
CPUUpdateCPSR();
|
|
sprintf(buffer, "R00=%08x R01=%08x R02=%08x R03=%08x R04=%08x R05=%08x R06=%08x R07=%08x R08=%08x R09=%08x R10=%08x R11=%08x R12=%08x R13=%08x R14=%08x R15=%08x R16=%08x R17=%08x\n",
|
|
reg[0].I, reg[1].I, reg[2].I, reg[3].I, reg[4].I, reg[5].I,
|
|
reg[6].I, reg[7].I, reg[8].I, reg[9].I, reg[10].I, reg[11].I,
|
|
reg[12].I, reg[13].I, reg[14].I, reg[15].I, reg[16].I,
|
|
reg[17].I);
|
|
#ifdef SDL
|
|
log(buffer);
|
|
#else
|
|
winlog(buffer);
|
|
#endif
|
|
}
|
|
else if(!holdState)
|
|
{
|
|
sprintf(buffer, "PC=%08x\n", armNextPC);
|
|
#ifdef SDL
|
|
log(buffer);
|
|
#else
|
|
winlog(buffer);
|
|
#endif
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if(!holdState)
|
|
{
|
|
if(armState)
|
|
{
|
|
#include "arm-new.h"
|
|
}
|
|
else
|
|
{
|
|
#include "thumb.h"
|
|
}
|
|
}
|
|
else
|
|
{
|
|
clockTicks = lcdTicks;
|
|
|
|
if(soundTicks < clockTicks)
|
|
clockTicks = soundTicks;
|
|
|
|
if(timer0On && (timer0Ticks < clockTicks))
|
|
{
|
|
clockTicks = timer0Ticks;
|
|
}
|
|
if(timer1On && (timer1Ticks < clockTicks))
|
|
{
|
|
clockTicks = timer1Ticks;
|
|
}
|
|
if(timer2On && (timer2Ticks < clockTicks))
|
|
{
|
|
clockTicks = timer2Ticks;
|
|
}
|
|
if(timer3On && (timer3Ticks < clockTicks))
|
|
{
|
|
clockTicks = timer3Ticks;
|
|
}
|
|
#ifdef PROFILING
|
|
if(profilingTicksReload != 0)
|
|
{
|
|
if(profilingTicks < clockTicks)
|
|
{
|
|
clockTicks = profilingTicks;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
cpuLoopTicks -= clockTicks;
|
|
if((cpuLoopTicks <= 0))
|
|
{
|
|
if(cpuSavedTicks)
|
|
{
|
|
clockTicks = cpuSavedTicks;// + cpuLoopTicks;
|
|
}
|
|
cpuDmaTicksToUpdate = -cpuLoopTicks;
|
|
|
|
updateLoop:
|
|
lcdTicks -= clockTicks;
|
|
|
|
if(lcdTicks <= 0)
|
|
{
|
|
if(DISPSTAT & 1)
|
|
{ // V-BLANK
|
|
// if in V-Blank mode, keep computing...
|
|
if(DISPSTAT & 2)
|
|
{
|
|
lcdTicks += 960;
|
|
VCOUNT++;
|
|
UPDATE_REG(0x06, VCOUNT);
|
|
DISPSTAT &= 0xFFFD;
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
CPUCompareVCOUNT();
|
|
}
|
|
else
|
|
{
|
|
lcdTicks += 272;
|
|
DISPSTAT |= 2;
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
if(DISPSTAT & 16)
|
|
{
|
|
IF |= 2;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
|
|
if(VCOUNT >= 228)
|
|
{
|
|
DISPSTAT &= 0xFFFC;
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
VCOUNT = 0;
|
|
UPDATE_REG(0x06, VCOUNT);
|
|
CPUCompareVCOUNT();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int framesToSkip = systemFrameSkip;
|
|
if(speedup)
|
|
framesToSkip = 9; // try 6 FPS during speedup
|
|
|
|
if(DISPSTAT & 2)
|
|
{
|
|
// if in H-Blank, leave it and move to drawing mode
|
|
VCOUNT++;
|
|
UPDATE_REG(0x06, VCOUNT);
|
|
|
|
lcdTicks += (960);
|
|
DISPSTAT &= 0xFFFD;
|
|
if(VCOUNT == 160)
|
|
{
|
|
count++;
|
|
systemFrame();
|
|
|
|
if((count % 10) == 0)
|
|
{
|
|
system10Frames(60);
|
|
}
|
|
if(count == 60)
|
|
{
|
|
u32 time = systemGetClock();
|
|
if(time != lastTime)
|
|
{
|
|
u32 t = 100000/(time - lastTime);
|
|
systemShowSpeed(t);
|
|
}
|
|
else
|
|
systemShowSpeed(0);
|
|
lastTime = time;
|
|
count = 0;
|
|
}
|
|
u32 joy = 0;
|
|
// update joystick information
|
|
if(systemReadJoypads())
|
|
// read default joystick
|
|
joy = systemReadJoypad(-1);
|
|
P1 = 0x03FF ^ (joy & 0x3FF);
|
|
if(cpuEEPROMSensorEnabled)
|
|
systemUpdateMotionSensor();
|
|
UPDATE_REG(0x130, P1);
|
|
u16 P1CNT = READ16LE(((u16 *)&ioMem[0x132]));
|
|
// this seems wrong, but there are cases where the game
|
|
// can enter the stop state without requesting an IRQ from
|
|
// the joypad.
|
|
if((P1CNT & 0x4000) || stopState)
|
|
{
|
|
u16 p1 = (0x3FF ^ P1) & 0x3FF;
|
|
if(P1CNT & 0x8000)
|
|
{
|
|
if(p1 == (P1CNT & 0x3FF))
|
|
{
|
|
IF |= 0x1000;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(p1 & P1CNT)
|
|
{
|
|
IF |= 0x1000;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
}
|
|
|
|
u32 ext = (joy >> 10);
|
|
int cheatTicks = 0;
|
|
if(cheatsEnabled)
|
|
cheatsCheckKeys(P1^0x3FF, ext);
|
|
cpuDmaTicksToUpdate += cheatTicks;
|
|
speedup = (ext & 1) ? true : false;
|
|
capture = (ext & 2) ? true : false;
|
|
|
|
if(capture && !capturePrevious)
|
|
{
|
|
captureNumber++;
|
|
systemScreenCapture(captureNumber);
|
|
}
|
|
capturePrevious = capture;
|
|
|
|
DISPSTAT |= 1;
|
|
DISPSTAT &= 0xFFFD;
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
if(DISPSTAT & 0x0008)
|
|
{
|
|
IF |= 1;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
CPUCheckDMA(1, 0x0f);
|
|
if(frameCount >= framesToSkip)
|
|
{
|
|
systemDrawScreen();
|
|
frameCount = 0;
|
|
}
|
|
else
|
|
frameCount++;
|
|
if(systemPauseOnFrame())
|
|
ticks = 0;
|
|
}
|
|
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
|
|
CPUCompareVCOUNT();
|
|
}
|
|
else
|
|
{
|
|
if(frameCount >= framesToSkip)
|
|
{
|
|
(*renderLine)();
|
|
|
|
switch(systemColorDepth)
|
|
{
|
|
case 16:
|
|
{
|
|
u16 *dest = (u16 *)pix + 242 * (VCOUNT+1);
|
|
for(int x = 0; x < 240;)
|
|
{
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
*dest++ = systemColorMap16[lineMix[x++]&0xFFFF];
|
|
}
|
|
// for filters that read past the screen
|
|
*dest++ = 0;
|
|
}
|
|
break;
|
|
case 24:
|
|
{
|
|
u8 *dest = (u8 *)pix + 240 * VCOUNT * 3;
|
|
for(int x = 0; x < 240;)
|
|
{
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
*((u32 *)dest) = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
dest += 3;
|
|
}
|
|
}
|
|
break;
|
|
case 32:
|
|
{
|
|
u32 *dest = (u32 *)pix + 241 * (VCOUNT+1);
|
|
for(int x = 0; x < 240; )
|
|
{
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
*dest++ = systemColorMap32[lineMix[x++] & 0xFFFF];
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
// entering H-Blank
|
|
DISPSTAT |= 2;
|
|
UPDATE_REG(0x04, DISPSTAT);
|
|
lcdTicks += 272;
|
|
CPUCheckDMA(2, 0x0f);
|
|
if(DISPSTAT & 16)
|
|
{
|
|
IF |= 2;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!stopState)
|
|
{
|
|
if(timer0On)
|
|
{
|
|
if(timer0ClockReload == 1)
|
|
{
|
|
u32 tm0d = TM0D + clockTicks;
|
|
if(tm0d > 0xffff)
|
|
{
|
|
tm0d += timer0Reload;
|
|
timerOverflow |= 1;
|
|
soundTimerOverflow(0);
|
|
if(TM0CNT & 0x40)
|
|
{
|
|
IF |= 0x08;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
TM0D = tm0d;
|
|
timer0Ticks = 0x10000 - TM0D;
|
|
UPDATE_REG(0x100, TM0D);
|
|
}
|
|
else
|
|
{
|
|
timer0Ticks -= clockTicks;
|
|
if(timer0Ticks <= 0)
|
|
{
|
|
timer0Ticks += timer0ClockReload;
|
|
TM0D++;
|
|
if(TM0D == 0)
|
|
{
|
|
TM0D = timer0Reload;
|
|
timerOverflow |= 1;
|
|
soundTimerOverflow(0);
|
|
if(TM0CNT & 0x40)
|
|
{
|
|
IF |= 0x08;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
UPDATE_REG(0x100, TM0D);
|
|
}
|
|
}
|
|
}
|
|
|
|
if(timer1On)
|
|
{
|
|
if(TM1CNT & 4)
|
|
{
|
|
if(timerOverflow & 1)
|
|
{
|
|
TM1D++;
|
|
if(TM1D == 0)
|
|
{
|
|
TM1D += timer1Reload;
|
|
timerOverflow |= 2;
|
|
soundTimerOverflow(1);
|
|
if(TM1CNT & 0x40)
|
|
{
|
|
IF |= 0x10;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
UPDATE_REG(0x104, TM1D);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(timer1ClockReload == 1)
|
|
{
|
|
u32 tm1d = TM1D + clockTicks;
|
|
if(tm1d > 0xffff)
|
|
{
|
|
tm1d += timer1Reload;
|
|
timerOverflow |= 2;
|
|
soundTimerOverflow(1);
|
|
if(TM1CNT & 0x40)
|
|
{
|
|
IF |= 0x10;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
TM1D = tm1d;
|
|
timer1Ticks = 0x10000 - TM1D;
|
|
UPDATE_REG(0x104, TM1D);
|
|
}
|
|
else
|
|
{
|
|
timer1Ticks -= clockTicks;
|
|
if(timer1Ticks <= 0)
|
|
{
|
|
timer1Ticks += timer1ClockReload;
|
|
TM1D++;
|
|
|
|
if(TM1D == 0)
|
|
{
|
|
TM1D = timer1Reload;
|
|
timerOverflow |= 2;
|
|
soundTimerOverflow(1);
|
|
if(TM1CNT & 0x40)
|
|
{
|
|
IF |= 0x10;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
UPDATE_REG(0x104, TM1D);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(timer2On)
|
|
{
|
|
if(TM2CNT & 4)
|
|
{
|
|
if(timerOverflow & 2)
|
|
{
|
|
TM2D++;
|
|
if(TM2D == 0)
|
|
{
|
|
TM2D += timer2Reload;
|
|
timerOverflow |= 4;
|
|
if(TM2CNT & 0x40)
|
|
{
|
|
IF |= 0x20;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
UPDATE_REG(0x108, TM2D);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(timer2ClockReload == 1)
|
|
{
|
|
u32 tm2d = TM2D + clockTicks;
|
|
if(tm2d > 0xffff)
|
|
{
|
|
tm2d += timer2Reload;
|
|
timerOverflow |= 4;
|
|
if(TM2CNT & 0x40)
|
|
{
|
|
IF |= 0x20;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
TM2D = tm2d;
|
|
timer2Ticks = 0x10000 - TM2D;
|
|
UPDATE_REG(0x108, TM2D);
|
|
}
|
|
else
|
|
{
|
|
timer2Ticks -= clockTicks;
|
|
if(timer2Ticks <= 0)
|
|
{
|
|
timer2Ticks += timer2ClockReload;
|
|
TM2D++;
|
|
|
|
if(TM2D == 0)
|
|
{
|
|
TM2D = timer2Reload;
|
|
timerOverflow |= 4;
|
|
if(TM2CNT & 0x40)
|
|
{
|
|
IF |= 0x20;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
UPDATE_REG(0x108, TM2D);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(timer3On)
|
|
{
|
|
if(TM3CNT & 4)
|
|
{
|
|
if(timerOverflow & 4)
|
|
{
|
|
TM3D++;
|
|
if(TM3D == 0)
|
|
{
|
|
TM3D += timer3Reload;
|
|
if(TM3CNT & 0x40)
|
|
{
|
|
IF |= 0x40;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
UPDATE_REG(0x10c, TM3D);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(timer3ClockReload == 1)
|
|
{
|
|
u32 tm3d = TM3D + clockTicks;
|
|
if(tm3d > 0xffff)
|
|
{
|
|
tm3d += timer3Reload;
|
|
if(TM3CNT & 0x40)
|
|
{
|
|
IF |= 0x40;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
TM3D = tm3d;
|
|
timer3Ticks = 0x10000 - TM3D;
|
|
UPDATE_REG(0x10C, TM3D);
|
|
}
|
|
else
|
|
{
|
|
timer3Ticks -= clockTicks;
|
|
if(timer3Ticks <= 0)
|
|
{
|
|
timer3Ticks += timer3ClockReload;
|
|
TM3D++;
|
|
|
|
if(TM3D == 0)
|
|
{
|
|
TM3D = timer3Reload;
|
|
if(TM3CNT & 0x40)
|
|
{
|
|
IF |= 0x40;
|
|
UPDATE_REG(0x202, IF);
|
|
}
|
|
}
|
|
UPDATE_REG(0x10C, TM3D);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// we shouldn't be doing sound in stop state, but we lose synchronization
|
|
// if sound is disabled, so in stop state, soundTick will just produce
|
|
// mute sound
|
|
soundTicks -= clockTicks;
|
|
if(soundTicks <= 0)
|
|
{
|
|
soundTick();
|
|
soundTicks += SOUND_CLOCK_TICKS;
|
|
}
|
|
timerOverflow = 0;
|
|
|
|
#ifdef PROFILING
|
|
profilingTicks -= clockTicks;
|
|
if(profilingTicks <= 0)
|
|
{
|
|
profilingTicks += profilingTicksReload;
|
|
if(profilBuffer && profilSize)
|
|
{
|
|
u16 *b = (u16 *)profilBuffer;
|
|
int pc = ((reg[15].I - profilLowPC) * profilScale)/0x10000;
|
|
if(pc >= 0 && pc < profilSize)
|
|
{
|
|
b[pc]++;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
ticks -= clockTicks;
|
|
|
|
cpuLoopTicks = CPUUpdateTicks();
|
|
|
|
if(cpuDmaTicksToUpdate > 0)
|
|
{
|
|
clockTicks = cpuSavedTicks;
|
|
if(clockTicks > cpuDmaTicksToUpdate)
|
|
clockTicks = cpuDmaTicksToUpdate;
|
|
cpuDmaTicksToUpdate -= clockTicks;
|
|
if(cpuDmaTicksToUpdate < 0)
|
|
cpuDmaTicksToUpdate = 0;
|
|
goto updateLoop;
|
|
}
|
|
|
|
if(IF && (IME & 1) && armIrqEnable)
|
|
{
|
|
int res = IF & IE;
|
|
if(stopState)
|
|
res &= 0x3080;
|
|
if(res)
|
|
{
|
|
if(intState)
|
|
{
|
|
CPUInterrupt();
|
|
intState = false;
|
|
if(holdState)
|
|
{
|
|
holdState = false;
|
|
stopState = false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(!holdState)
|
|
{
|
|
intState = true;
|
|
cpuLoopTicks = 5;
|
|
cpuSavedTicks = 5;
|
|
}
|
|
else
|
|
{
|
|
CPUInterrupt();
|
|
if(holdState)
|
|
{
|
|
holdState = false;
|
|
stopState = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(ticks <= 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
struct EmulatedSystem GBASystem =
|
|
{
|
|
// emuMain
|
|
CPULoop,
|
|
// emuReset
|
|
CPUReset,
|
|
// emuCleanUp
|
|
CPUCleanUp,
|
|
// emuReadBattery
|
|
CPUReadBatteryFile,
|
|
// emuWriteBattery
|
|
CPUWriteBatteryFile,
|
|
// emuReadState
|
|
CPUReadState,
|
|
// emuWriteState
|
|
CPUWriteState,
|
|
// emuReadMemState
|
|
CPUReadMemState,
|
|
// emuWriteMemState
|
|
CPUWriteMemState,
|
|
// emuWritePNG
|
|
CPUWritePNGFile,
|
|
// emuWriteBMP
|
|
CPUWriteBMPFile,
|
|
// emuUpdateCPSR
|
|
CPUUpdateCPSR,
|
|
// emuHasDebugger
|
|
true,
|
|
// emuCount
|
|
#ifdef FINAL_VERSION
|
|
250000
|
|
#else
|
|
5000
|
|
#endif
|
|
};
|