AxibugEmuOnline/virtuanessrc097-master/NES/Mapper/Mapper033.cpp

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//////////////////////////////////////////////////////////////////////////
// Mapper033 Taito TC0190 //
//////////////////////////////////////////////////////////////////////////
void Mapper033::Reset()
{
patch = 0;
irq_enable = 0;
irq_counter = 0;
irq_latch = 0;
reg[0] = 0;
reg[1] = 2;
reg[2] = 4;
reg[3] = 5;
reg[4] = 6;
reg[5] = 7;
reg[6] = 1;
SetPROM_32K_Bank( 0, 1, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
if( VROM_8K_SIZE ) {
SetBank();
}
DWORD crc = nes->rom->GetPROM_CRC();
// Check For Old #33 games.... (CRC code by NesToy)
if( crc == 0x5e9bc161 // Akira(J)
|| crc == 0xecdbafa4 // Bakushou!! Jinsei Gekijou(J)
|| crc == 0x59cd0c31 // Don Doko Don(J)
|| crc == 0x837c1342 // Golf Ko Open(J)
|| crc == 0x42d893e4 // Operation Wolf(J)
|| crc == 0x1388aeb9 // Operation Wolf(U)
|| crc == 0x07ee6d8f // Power Blazer(J)
|| crc == 0x5193fb54 // Takeshi no Sengoku Fuuunji(J)
|| crc == 0xa71c3452 ) { // Insector X(J)
patch = 1;
}
nes->SetRenderMethod( NES::PRE_RENDER );
if( crc == 0x202df297 ) { // Captain Saver(J)
nes->SetRenderMethod( NES::TILE_RENDER );
}
if( crc == 0x63bb86b5 ) { // The Jetsons(J)
nes->SetRenderMethod( NES::TILE_RENDER );
}
}
void Mapper033::Write( WORD addr, BYTE data )
{
// LOG( "Mapper033 addr=%04X data=%02X", addr&0xFFFF, data&0xFF );
switch( addr ) {
case 0x8000:
if( patch ) {
if( data & 0x40 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
SetPROM_8K_Bank( 4, data & 0x1F );
} else {
SetPROM_8K_Bank( 4, data );
}
break;
case 0x8001:
if( patch ) {
SetPROM_8K_Bank( 5, data & 0x1F );
} else {
SetPROM_8K_Bank( 5, data );
}
break;
case 0x8002:
reg[0] = data;
SetBank();
break;
case 0x8003:
reg[1] = data;
SetBank();
break;
case 0xA000:
reg[2] = data;
SetBank();
break;
case 0xA001:
reg[3] = data;
SetBank();
break;
case 0xA002:
reg[4] = data;
SetBank();
break;
case 0xA003:
reg[5] = data;
SetBank();
break;
#if 0
case 0xC003:
case 0xE003:
reg[6] = data;
SetBank();
break;
case 0xC000:
irq_counter = data;
// nes->cpu->ClrIRQ( IRQ_MAPPER );
break;
case 0xC001:
case 0xC002:
case 0xE001:
case 0xE002:
irq_enable = data;
// nes->cpu->ClrIRQ( IRQ_MAPPER );
break;
#else
case 0xC000:
irq_latch = data;
irq_counter = irq_latch;
break;
case 0xC001:
irq_counter = irq_latch;
break;
case 0xC002:
irq_enable = 1;
break;
case 0xC003:
irq_enable = 0;
break;
case 0xE001:
case 0xE002:
case 0xE003:
break;
#endif
case 0xE000:
if( data & 0x40 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
break;
}
}
void Mapper033::HSync( INT scanline )
{
#if 0
// nes->cpu->ClrIRQ( IRQ_MAPPER );
if( scanline >= 0 && scanline <= 239 ) {
if( nes->ppu->IsDispON() ) {
if( irq_enable ) {
if( irq_counter == 0xFF ) {
irq_enable = 0;
irq_counter = 0;
// nes->cpu->SetIRQ( IRQ_MAPPER );
nes->cpu->SetIRQ( IRQ_TRIGGER );
} else {
irq_counter++;
}
}
}
}
#else
if( scanline >= 0 && scanline <= 239 && nes->ppu->IsDispON() ) {
if( irq_enable ) {
if( ++irq_counter == 0 ) {
irq_enable = 0;
irq_counter = 0;
nes->cpu->SetIRQ( IRQ_TRIGGER );
}
}
}
#endif
}
void Mapper033::SetBank()
{
SetVROM_2K_Bank( 0, reg[0] );
SetVROM_2K_Bank( 2, reg[1] );
// if( reg[6] & 0x01 ) {
SetVROM_1K_Bank( 4, reg[2] );
SetVROM_1K_Bank( 5, reg[3] );
SetVROM_1K_Bank( 6, reg[4] );
SetVROM_1K_Bank( 7, reg[5] );
// } else {
// SetVROM_2K_Bank( 4, reg[0] );
// SetVROM_2K_Bank( 6, reg[1] );
// }
}
void Mapper033::SaveState( LPBYTE p )
{
for( INT i = 0; i < 7; i++ ) {
p[i] = reg[i];
}
p[7] = irq_enable;
p[8] = irq_counter;
p[9] = irq_latch;
}
void Mapper033::LoadState( LPBYTE p )
{
for( INT i = 0; i < 7; i++ ) {
reg[i] = p[i];
}
irq_enable = p[7];
irq_counter = p[8];
irq_latch = p[9];
}