AxibugEmuOnline/virtuanessrc097-master/NES/Mapper/Mapper019.cpp

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//////////////////////////////////////////////////////////////////////////
// Mapper019 Namcot 106 //
//////////////////////////////////////////////////////////////////////////
void Mapper019::Reset()
{
patch = 0;
reg[0] = reg[1] = reg[2] = 0;
::memset( exram, 0, sizeof(exram) );
irq_enable = 0;
irq_counter = 0;
SetPROM_32K_Bank( 0, 1, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
if( VROM_1K_SIZE >= 8 ) {
SetVROM_8K_Bank( VROM_8K_SIZE-1 );
}
exsound_enable = 0xFF;
DWORD crc = nes->rom->GetPROM_CRC();
if( crc == 0xb62a7b71 ) { // Family Circuit '91(J)
patch = 1;
}
if( crc == 0x02738c68 ) { // Wagan Land 2(J)
patch = 3;
}
if( crc == 0x14942c06 ) { // Wagan Land 3(J)
patch = 2;
}
if( crc == 0x968dcf09 ) { // Final Lap(J)
nes->SetRenderMethod( NES::PRE_ALL_RENDER );
}
if( crc == 0x3deac303 ) { // Rolling Thunder(J)
nes->SetRenderMethod( NES::POST_ALL_RENDER );
}
if( crc == 0xb1b9e187 ) { // For Kaijuu Monogatari(J)
nes->SetRenderMethod( NES::PRE_ALL_RENDER );
}
if( crc == 0x6901346e ) { // For Sangokushi 2 - Haou no Tairiku(J)
nes->SetRenderMethod( NES::TILE_RENDER );
}
// if( crc == 0xdd454208 ) { // Hydlide 3(J)
// nes->SetRenderMethod( NES::PRE_ALL_RENDER );
// }
if( crc == 0xaf15338f // For Mindseeker(J)
|| crc == 0xb1b9e187 // For Kaijuu Monogatari(J)
|| crc == 0x96533999 // Dokuganryuu Masamune(J)
// || crc == 0x2b825ce1 // Namco Classic(J)
// || crc == 0x9a2b0641 // Namco Classic 2(J)
|| crc == 0x3296ff7a // Battle Fleet(J)
|| crc == 0xdd454208 ) { // Hydlide 3(J)
exsound_enable = 0;
}
if( crc == 0x429fd177 ) { // Famista '90(J)
exsound_enable = 0;
}
if( exsound_enable ) {
nes->apu->SelectExSound( 0x10 );
}
}
BYTE Mapper019::ReadLow( WORD addr )
{
BYTE data = 0;
switch( addr & 0xF800 ) {
case 0x4800:
if( addr == 0x4800 ) {
if( exsound_enable ) {
nes->apu->ExRead(addr);
data = exram[reg[2]&0x7F];
} else {
data = WRAM[reg[2]&0x7F];
}
if( reg[2]&0x80 )
reg[2] = (reg[2]+1)|0x80;
return data;
}
break;
case 0x5000:
return (BYTE)irq_counter & 0x00FF;
case 0x5800:
return (BYTE)((irq_counter>>8) & 0x7F);
case 0x6000:
case 0x6800:
case 0x7000:
case 0x7800:
return Mapper::ReadLow( addr );
}
return (BYTE)(addr>>8);
}
void Mapper019::WriteLow( WORD addr, BYTE data )
{
switch( addr & 0xF800 ) {
case 0x4800:
if( addr == 0x4800 ) {
if( exsound_enable ) {
nes->apu->ExWrite( addr, data );
exram[reg[2]&0x7F] = data;
} else {
WRAM[reg[2]&0x7F] = data;
}
if( reg[2]&0x80 )
reg[2] = (reg[2]+1)|0x80;
}
break;
case 0x5000:
irq_counter = (irq_counter & 0xFF00) | (WORD)data;
// if( irq_enable ) {
// irq_counter++;
// }
nes->cpu->ClrIRQ( IRQ_MAPPER );
break;
case 0x5800:
irq_counter = (irq_counter & 0x00FF) | ((WORD)(data & 0x7F) << 8);
irq_enable = data & 0x80;
// if( irq_enable ) {
// irq_counter++;
// }
// if( !irq_enable ) {
// nes->cpu->ClrIRQ( IRQ_MAPPER );
// }
nes->cpu->ClrIRQ( IRQ_MAPPER );
break;
case 0x6000:
case 0x6800:
case 0x7000:
case 0x7800:
Mapper::WriteLow( addr, data );
break;
}
}
void Mapper019::Write( WORD addr, BYTE data )
{
//if( addr >= 0xC000 ) {
//DEBUGOUT( "W %04X %02X L:%3d\n", addr, data, nes->GetScanline() );
//}
switch( addr & 0xF800 ) {
case 0x8000:
if( (data < 0xE0) || (reg[0] != 0) ) {
SetVROM_1K_Bank( 0, data );
} else {
SetCRAM_1K_Bank( 0, data&0x1F );
}
break;
case 0x8800:
if( (data < 0xE0) || (reg[0] != 0) ) {
SetVROM_1K_Bank( 1, data );
} else {
SetCRAM_1K_Bank( 1, data&0x1F );
}
break;
case 0x9000:
if( (data < 0xE0) || (reg[0] != 0) ) {
SetVROM_1K_Bank( 2, data );
} else {
SetCRAM_1K_Bank( 2, data&0x1F );
}
break;
case 0x9800:
if( (data < 0xE0) || (reg[0] != 0) ) {
SetVROM_1K_Bank( 3, data );
} else {
SetCRAM_1K_Bank( 3, data&0x1F );
}
break;
case 0xA000:
if( (data < 0xE0) || (reg[1] != 0) ) {
SetVROM_1K_Bank( 4, data );
} else {
SetCRAM_1K_Bank( 4, data&0x1F );
}
break;
case 0xA800:
if( (data < 0xE0) || (reg[1] != 0) ) {
SetVROM_1K_Bank( 5, data );
} else {
SetCRAM_1K_Bank( 5, data&0x1F );
}
break;
case 0xB000:
if( (data < 0xE0) || (reg[1] != 0) ) {
SetVROM_1K_Bank( 6, data );
} else {
SetCRAM_1K_Bank( 6, data&0x1F );
}
break;
case 0xB800:
if( (data < 0xE0) || (reg[1] != 0) ) {
SetVROM_1K_Bank( 7, data );
} else {
SetCRAM_1K_Bank( 7, data&0x1F );
}
break;
case 0xC000:
if( !patch ) {
if( data <= 0xDF ) {
SetVROM_1K_Bank( 8, data );
} else {
SetVRAM_1K_Bank( 8, data & 0x01 );
}
}
break;
case 0xC800:
if( !patch ) {
if( data <= 0xDF ) {
SetVROM_1K_Bank( 9, data );
} else {
SetVRAM_1K_Bank( 9, data & 0x01 );
}
}
break;
case 0xD000:
if( !patch ) {
if( data <= 0xDF ) {
SetVROM_1K_Bank( 10, data );
} else {
SetVRAM_1K_Bank( 10, data & 0x01 );
}
}
break;
case 0xD800:
if( !patch ) {
if( data <= 0xDF ) {
SetVROM_1K_Bank( 11, data );
} else {
SetVRAM_1K_Bank( 11, data & 0x01 );
}
}
break;
case 0xE000:
SetPROM_8K_Bank( 4, data & 0x3F );
if( patch == 2 ) {
if( data & 0x40 ) SetVRAM_Mirror( VRAM_VMIRROR );
else SetVRAM_Mirror( VRAM_MIRROR4L );
}
if( patch == 3 ) {
if( data & 0x80 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
}
break;
case 0xE800:
reg[0] = data & 0x40;
reg[1] = data & 0x80;
SetPROM_8K_Bank( 5, data & 0x3F );
break;
case 0xF000:
SetPROM_8K_Bank( 6, data & 0x3F );
break;
case 0xF800:
if( addr == 0xF800 ) {
if( exsound_enable ) {
nes->apu->ExWrite( addr, data );
}
reg[2] = data;
}
break;
}
}
void Mapper019::Clock( INT cycles )
{
if( irq_enable ) {
if( (irq_counter+=cycles) >= 0x7FFF ) {
// irq_counter = 0x7FFF;
// nes->cpu->IRQ_NotPending();
irq_enable = 0;
// irq_counter &= 0x7FFF;
irq_counter = 0x7FFF;
nes->cpu->SetIRQ( IRQ_MAPPER );
}
}
}
void Mapper019::SaveState( LPBYTE p )
{
p[0] = reg[0];
p[1] = reg[1];
p[2] = reg[2];
p[3] = irq_enable;
*(WORD*)&p[4] = irq_counter;
::memcpy( &p[8], exram, sizeof(exram) );
}
void Mapper019::LoadState( LPBYTE p )
{
reg[0] = p[0];
reg[1] = p[1];
reg[2] = p[2];
irq_enable = p[3];
irq_counter = *(WORD*)&p[4];
::memcpy( exram, &p[8], sizeof(exram) );
}