public static void reset()
{
cycles = 0;
if (coldreset)
{
GBRegs.reset();
Flash.reset();
EEProm.reset();
GPU.reset();
Memory.reset(filename);
}
CPU.reset();
GPU_Timing.reset();
Sound.reset();
Joypad.set_reg();
Timer.reset();
DMA.reset();
SoundDMA.reset();
BusTiming.reset();
gpio.reset();
//Serial.reset();
loading_state = false;
coldreset = false;
on = true;
}
public static void write_dword(UInt32 address, UInt32 data)
{
#if DEBUG
writecnt32[(address >> 24) & 0xF]++;
if (enable_debugout && address >= 0x04FFF600 & address < 0x04FFF700)
{
debug_out.Add((char)(data & 0xFF));
debug_out.Add((char)((data >> 8) & 0xFF));
debug_out.Add((char)((data >> 16) & 0xFF));
debug_out.Add((char)((data >> 24) & 0xFF));
}
if (enable_debugout && address == 0x04FFF700)
{
int a = 5;
}
#endif
byte offset = (byte)(address & 3);
address = address & 0xFFFFFFFC;
uint adr;
byte select = (byte)(address >> 24);
switch (select)
{
case 2:
adr = address & 0x03FFFF;
WRAM_Large[adr] = (byte)(data & 0xFF);
WRAM_Large[adr + 1] = (byte)((data >> 8) & 0xFF);
WRAM_Large[adr + 2] = (byte)((data >> 16) & 0xFF);
WRAM_Large[adr + 3] = (byte)((data >> 24) & 0xFF);
return;
case 3:
adr = address & 0x7FFF;
WRAM_Small[adr] = (byte)(data & 0xFF);
WRAM_Small[adr + 1] = (byte)((data >> 8) & 0xFF);
WRAM_Small[adr + 2] = (byte)((data >> 16) & 0xFF);
WRAM_Small[adr + 3] = (byte)((data >> 24) & 0xFF);
return;
case 4:
if (address < 0x04000400)
{
adr = address & 0x3FF;
GBRegs.data[adr] = (byte)(data & 0xFF);
GBRegs.data[adr + 1] = (byte)((data >> 8) & 0xFF);
GBRegs.data[adr + 2] = (byte)((data >> 16) & 0xFF);
GBRegs.data[adr + 3] = (byte)((data >> 24) & 0xFF);
write_gbreg(adr, data, true);
write_gbreg(adr + 2, data, true);
}
return;
case 5:
adr = address & 0x3FF;
PaletteRAM[adr] = (byte)(data & 0xFF);
PaletteRAM[adr + 1] = (byte)((data >> 8) & 0xFF);
PaletteRAM[adr + 2] = (byte)((data >> 16) & 0xFF);
PaletteRAM[adr + 3] = (byte)((data >> 24) & 0xFF);
return;
case 6:
adr = address & 0x1FFFF;
if (GPU.videomode < 3 || ((address & 0x1C000) != 0x18000))
{
if (adr > 0x17FFF)
{
adr -= 0x8000;
}
VRAM[adr] = (byte)(data & 0xFF);
VRAM[adr + 1] = (byte)((data >> 8) & 0xFF);
VRAM[adr + 2] = (byte)((data >> 16) & 0xFF);
VRAM[adr + 3] = (byte)((data >> 24) & 0xFF);
}
return;
case 7:
adr = address & 0x3FF;
OAMRAM[adr] = (byte)(data & 0xFF);
OAMRAM[adr + 1] = (byte)((data >> 8) & 0xFF);
OAMRAM[adr + 2] = (byte)((data >> 16) & 0xFF);
OAMRAM[adr + 3] = (byte)((data >> 24) & 0xFF);
return;
case 0x8:
if (gpio_enable)
{
if (address >= 0x80000c4 && address <= 0x80000c8)
{
gpio_used = true;
gpio.gpioWrite(address, (ushort)data);
}
}
return;
case 0xD:
if (EEPROMEnabled)
{
EEProm.write((byte)data);
}
return;
case 0xE:
case 0xF:
if (!EEPROMEnabled | FlashEnabled | SramEnabled)
{
SaveGameFunc(address + offset + blockcmd_lowerbits, (byte)data);
}
return;
}
}
public static void write_byte(UInt32 address, byte data)
{
#if DEBUG
writecnt8[(address >> 24) & 0xF]++;
if (enable_debugout && address >= 0x04FFF600 & address < 0x04FFF700)
{
debug_out.Add((char)data);
}
if (enable_debugout && address == 0x04FFF700)
{
int a = 5;
}
#endif
uint adr;
byte select = (byte)(address >> 24);
switch (select)
{
case 2: WRAM_Large[address & 0x03FFFF] = (byte)(data & 0xFF); return;
case 3: WRAM_Small[address & 0x7FFF] = (byte)(data & 0xFF); return;
case 4:
if (address < 0x04000400)
{
adr = address & 0x3FF;
GBRegs.data[adr] = data;
write_gbreg(adr & 0xFFFFFFFE, data, false);
}
return;
// Writing 8bit Data to Video Memory
// Video Memory(BG, OBJ, OAM, Palette) can be written to in 16bit and 32bit units only.Attempts to write 8bit data(by STRB opcode) won't work:
// Writes to OBJ(6010000h - 6017FFFh)(or 6014000h - 6017FFFh in Bitmap mode) and to OAM(7000000h - 70003FFh) are ignored, the memory content remains unchanged.
// Writes to BG(6000000h - 600FFFFh)(or 6000000h - 6013FFFh in Bitmap mode) and to Palette(5000000h - 50003FFh) are writing the new 8bit value to BOTH upper and lower 8bits of the addressed halfword, ie. "[addr AND NOT 1]=data*101h".
case 5: PaletteRAM[address & 0x3FE] = data; PaletteRAM[(address & 0x3FE) + 1] = data; return;
case 6:
adr = address & 0x1FFFE;
if ((GPU.videomode <= 2 && adr <= 0xFFFF) || GPU.videomode >= 3 && adr <= 0x013FFF)
{
if (adr > 0x17FFF)
{
adr -= 0x8000;
}
VRAM[adr] = data;
VRAM[adr + 1] = data;
}
return;
case 7: return; // no saving here!
case 0xD:
if (EEPROMEnabled)
{
EEProm.write(data);
}
return;
case 0xE:
case 0xF:
if (!EEPROMEnabled | FlashEnabled | SramEnabled)
{
SaveGameFunc(address, data);
}
return;
}
}
public static UInt32 read_dword(UInt32 address)
{
#if DEBUG
readcnt32[(address >> 24) & 0xF]++;
#endif
unreadable = false;
UInt32 value = 0;
byte rotate = (byte)(address & 3);
address = address & 0xFFFFFFFC;
byte select = (byte)(address >> 24);
switch (select)
{
case 0:
if ((CPU.regs[15] >> 24) > 0)
{
if (address < 0x4000)
{
value = BitConverter.ToUInt32(biosProtected, 0);
}
else
{
value = read_unreadable_dword();
}
}
else
{
for (int i = 0; i < 4; i++)
{
biosProtected[i] = GBRom[((address + 8) & 0x3FFC) + i];
}
value = BitConverter.ToUInt32(GBRom, (int)address & 0x3FFC);
}
break;
case 1: value = read_unreadable_dword(); break;
case 2: value = BitConverter.ToUInt32(WRAM_Large, (int)address & 0x03FFFF); break;
case 3: value = BitConverter.ToUInt32(WRAM_Small, (int)address & 0x7FFF); break;
case 4:
if (address < 0x04000400)
{
value = (UInt16)read_word(address) | (read_word(address + 2) << 16);
}
else
{
value = read_unreadable_dword();
}
break;
case 5: value = BitConverter.ToUInt32(PaletteRAM, (int)address & 0x3FF); break;
case 6:
uint adr = address & 0x1FFFF;
if (adr > 0x17FFF)
{
adr -= 0x8000;
}
value = BitConverter.ToUInt32(VRAM, (int)adr);
break;
case 7: value = BitConverter.ToUInt32(OAMRAM, (int)address & 0x3FF); break;
case 8:
case 9:
case 0xA:
case 0xB:
case 0xC:
if (gpio_enable && gpio_used && address >= 0x80000c4 && address <= 0x80000c8)
{
value = gpio.gpioRead(address);
}
else
{
if ((address & 0x01FFFFFF) < GameRom_max)
{
value = BitConverter.ToUInt32(GameRom, (int)address & 0x01FFFFFF);
}
else
{
value = ((address / 2) & 0xFFFF) + ((((address / 2) + 1) & 0xFFFF) << 16);
}
}
break;
case 0xD:
if (EEPROMEnabled)
{
value = (UInt32)EEProm.read();
}
break;
case 0xE:
case 0xF:
if (FlashEnabled | SramEnabled)
{
value = Flash.flashRead(address + rotate + blockcmd_lowerbits) * (UInt32)0x01010101;
}
else
{
value = read_unreadable_dword();
}
break;
default: value = read_unreadable_dword(); break;
}
lastreadvalue = value;
if (rotate == 0)
{
return(value);
}
else
{
value = CPU.RotateRight(value, 8 * rotate);
}
return(value);
}
public static UInt32 read_word(UInt32 address)
{
#if DEBUG
readcnt16[(address >> 24) & 0xF]++;
#endif
unreadable = false;
UInt32 value = 0;
byte rotate = (byte)(address & 1);
address = address & 0xFFFFFFFE;
uint adr;
byte select = (byte)(address >> 24);
switch (select)
{
case 0:
if ((CPU.regs[15] >> 24) > 0)
{
if (address < 0x4000)
{
value = BitConverter.ToUInt16(biosProtected, (int)address & 2);
}
else
{
value = read_unreadable_word();
}
}
else
{
for (int i = 0; i < 4; i++)
{
biosProtected[i] = GBRom[((address + 8) & 0x3FFC) + i];
}
value = BitConverter.ToUInt16(GBRom, (int)address & 0x3FFE);
}
break;
case 1: value = read_unreadable_word(); break;
case 2: value = BitConverter.ToUInt16(WRAM_Large, (int)address & 0x03FFFF); break;
case 3: value = BitConverter.ToUInt16(WRAM_Small, (int)address & 0x7FFF); break;
case 4:
if (address < 0x04000400)
{
adr = address & 0x3FF;
if (adr == GBRegs.Sect_dma.DMA0CNT_L.address ||
adr == GBRegs.Sect_dma.DMA1CNT_L.address ||
adr == GBRegs.Sect_dma.DMA2CNT_L.address ||
adr == GBRegs.Sect_dma.DMA3CNT_L.address)
{
return(0);
}
else
{
UInt16 rwmask = BitConverter.ToUInt16(GBRegs.rwmask, (int)adr & 0x3FFE);
if (rwmask == 0)
{
value = read_unreadable_word();
}
else
{
prepare_read_gbreg(adr);
value = BitConverter.ToUInt16(GBRegs.data, (int)adr);
value &= rwmask;
}
}
}
else
{
value = read_unreadable_word();
}
break;
case 5: value = BitConverter.ToUInt16(PaletteRAM, (int)address & 0x3FF); break;
case 6:
adr = address & 0x1FFFF;
if (adr > 0x17FFF)
{
adr -= 0x8000;
}
value = BitConverter.ToUInt16(VRAM, (int)adr);
break;
case 7: value = BitConverter.ToUInt16(OAMRAM, (int)address & 0x3FF); break;
case 8:
case 9:
case 0xA:
case 0xB:
case 0xC:
if (gpio_enable && gpio_used && address >= 0x80000c4 && address <= 0x80000c8)
{
value = gpio.gpioRead(address);
}
else
{
if ((address & 0x01FFFFFF) < GameRom_max)
{
value = BitConverter.ToUInt16(GameRom, (int)address & 0x01FFFFFF);
}
else
{
value = (address / 2) & 0xFFFF;
}
}
break;
case 0xD:
if (EEPROMEnabled)
{
value = (UInt32)EEProm.read();
}
break;
case 0xE:
case 0xF:
if (FlashEnabled | SramEnabled)
{
value = Flash.flashRead(address + rotate) * (UInt32)0x0101;
}
else
{
value = read_unreadable_word();
}
break;
default: value = read_unreadable_word(); break;
}
lastreadvalue = value;
if (rotate == 0)
{
return(value);
}
else
{
value = ((value & 0xFF) << 24) | (value >> 8);
}
return(value);
}
public static byte read_byte(UInt32 address)
{
#if DEBUG
readcnt8[(address >> 24) & 0xF]++;
#endif
unreadable = false;
uint adr;
byte select = (byte)(address >> 24);
switch (select)
{
case 0:
if ((CPU.regs[15] >> 24) > 0)
{
if (address < 0x4000)
{
return(biosProtected[address & 3]);
}
else
{
return(read_unreadable_byte(address & 1));
}
}
else
{
for (int i = 0; i < 4; i++)
{
biosProtected[i] = GBRom[((address + 8) & 0x3FFC) + i];
}
return(GBRom[address & 0x3FFF]);
}
case 1: return(read_unreadable_byte(address & 1));
case 2: return(WRAM_Large[address & 0x03FFFF]);
case 3: return(WRAM_Small[address & 0x7FFF]);
case 4:
if (address < 0x04000400)
{
adr = address & 0x3FF;
byte rwmask = GBRegs.rwmask[adr];
if (rwmask == 0)
{
return(read_unreadable_byte(address & 1));
}
else
{
prepare_read_gbreg(adr);
byte value = GBRegs.data[adr];
value &= rwmask;
return(value);
}
}
else
{
return(read_unreadable_byte(address & 1));
}
case 5: return(PaletteRAM[address & 0x3FF]);
case 6:
adr = address & 0x1FFFF;
if (adr > 0x17FFF)
{
adr -= 0x8000;
}
return(VRAM[adr & 0x1FFFF]);
case 7: return(OAMRAM[address & 0x3FF]);
case 8:
case 9:
case 0xA:
case 0xB:
case 0xC:
if ((address & 0x01FFFFFF) < GameRom_max)
{
return(GameRom[address & 0x01FFFFFF]);
}
else
{
if ((address & 1) == 0)
{
return((byte)(address / 2));
}
else
{
return((byte)((address >> 8) / 2));
}
}
case 0xD:
if (EEPROMEnabled)
{
return((byte)EEProm.read());
}
else
{
return(read_unreadable_byte(address & 1));
}
case 0xE:
case 0xF:
if (has_tilt && address == 0x0E008200)
{
return((byte)tiltx);
}
if (has_tilt && address == 0x0E008300)
{
return((byte)(0x80 | ((tiltx >> 8) & 0xF)));
}
if (has_tilt && address == 0x0E008400)
{
return((byte)tilty);
}
if (has_tilt && address == 0x0E008500)
{
return((byte)((tilty >> 8) & 0xF));
}
if (FlashEnabled | SramEnabled)
{
return(Flash.flashRead(address));
}
else
{
return(read_unreadable_byte(address));
}
default: return(read_unreadable_byte(address & 1));
}
}