AxibugEmuOnline/References/virtuanessrc097-master/NES/Mapper/Mapper189.cpp
2024-08-05 17:58:53 +08:00

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//////////////////////////////////////////////////////////////////////////
// Mapper189 Street Fighter 2 Yoko/Master Fighter 2 //
// 快打傅説 Street Fighter IV (GOUDER) //
//////////////////////////////////////////////////////////////////////////
void Mapper189::Reset()
{
SetPROM_32K_Bank( PROM_8K_SIZE-4, PROM_8K_SIZE-3, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
if( VROM_1K_SIZE ) {
SetVROM_8K_Bank( 0 );
}
reg[0] = reg[1] = 0;
chr01 = 0;
chr23 = 2;
chr4 = 4;
chr5 = 5;
chr6 = 6;
chr7 = 7;
SetBank_PPU();
irq_enable = 0;
irq_counter = 0;
irq_latch = 0;
for( INT i = 0; i < 4; i++ ) {
protect_dat[i] = 0;
}
lwd = 0xFF;
patch = 0;
DWORD crc = nes->rom->GetPROM_CRC();
if( crc == 0x20ca2ad3 ) { // Street Fighter IV (GOUDER)
patch = 1;
SetPROM_32K_Bank( 0 );
// $4000-$5FFF
SetPROM_Bank( 2, XRAM, BANKTYPE_ROM );
}
}
void Mapper189::WriteLow( WORD addr, BYTE data )
{
if( (addr & 0xFF00) == 0x4100 ) {
// Street Fighter 2 YOKO
SetPROM_32K_Bank( (data&0x30)>>4 );
} else if( (addr & 0xFF00) == 0x6100 ) {
// Master Fighter 2
SetPROM_32K_Bank( data&0x03 );
}
if( patch ) {
// Street Fighter IV (GOUDER)
BYTE a5000xordat[256] = {
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01,
0x00, 0x10, 0x40, 0x50, 0x00, 0x10, 0x40, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x18, 0x48, 0x58, 0x08, 0x18, 0x48, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x10, 0x40, 0x50, 0x00, 0x10, 0x40, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x18, 0x48, 0x58, 0x08, 0x18, 0x48, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x58, 0x48, 0x18, 0x08, 0x58, 0x48, 0x18, 0x08,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x50, 0x40, 0x10, 0x00, 0x50, 0x40, 0x10, 0x00,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x58, 0x48, 0x18, 0x08, 0x58, 0x48, 0x18, 0x08,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x50, 0x40, 0x10, 0x00, 0x50, 0x40, 0x10, 0x00,
0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
if( (addr >= 0x4800) && (addr <= 0x4FFF) ) {
SetPROM_32K_Bank( ((data&0x10)>>3)+(data&0x1) );
if( !nes->rom->Is4SCREEN() ) {
if( data & 0x20 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
}
}
if( (addr>=0x5000) && (addr<=0x57FF) ) {
lwd = data;
}
if( (addr>=0x5800) && (addr<=0x5FFF) ) {
// XRAM[0x1000+(addr & 3)] =
// $5800 "JMP $xxxx" write
XRAM[0x1800+(addr & 3)] =
protect_dat[ addr & 3 ] = data ^ a5000xordat[ lwd ];
}
}
}
void Mapper189::Write( WORD addr, BYTE data )
{
switch( addr&0xE001 ) {
case 0x8000:
reg[0] = data;
SetBank_PPU();
break;
case 0x8001:
reg[1] = data;
SetBank_PPU();
switch( reg[0] & 0x07 ) {
case 0x00:
chr01 = data & 0xFE;
SetBank_PPU();
break;
case 0x01:
chr23 = data & 0xFE;
SetBank_PPU();
break;
case 0x02:
chr4 = data;
SetBank_PPU();
break;
case 0x03:
chr5 = data;
SetBank_PPU();
break;
case 0x04:
chr6 = data;
SetBank_PPU();
break;
case 0x05:
chr7 = data;
SetBank_PPU();
break;
}
break;
case 0xA000:
if( data&0x01 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
break;
case 0xC000:
irq_counter = data;
break;
case 0xC001:
irq_latch = data;
break;
case 0xE000:
irq_enable = 0;
nes->cpu->ClrIRQ( IRQ_MAPPER );
break;
case 0xE001:
irq_enable = 0xFF;
break;
}
}
void Mapper189::HSync( INT scanline )
{
if( (scanline >= 0 && scanline <= 239) ) {
if( nes->ppu->IsDispON() ) {
if( irq_enable ) {
if( !(--irq_counter) ) {
// if( !(irq_counter--) ) {
irq_counter = irq_latch;
nes->cpu->SetIRQ( IRQ_MAPPER );
}
}
}
}
}
void Mapper189::SetBank_PPU()
{
if( patch ) {
SetVROM_8K_Bank( chr01, chr01+1, chr23, chr23+1,
chr4, chr5, chr6, chr7 );
} else {
if( VROM_1K_SIZE ) {
if( reg[0] & 0x80 ) {
SetVROM_8K_Bank( chr4, chr5, chr6, chr7,
chr01, chr01+1, chr23, chr23+1 );
} else {
SetVROM_8K_Bank( chr01, chr01+1, chr23, chr23+1,
chr4, chr5, chr6, chr7 );
}
} else {
if( reg[0] & 0x80 ) {
SetCRAM_1K_Bank( 4, (chr01+0)&0x07 );
SetCRAM_1K_Bank( 5, (chr01+1)&0x07 );
SetCRAM_1K_Bank( 6, (chr23+0)&0x07 );
SetCRAM_1K_Bank( 7, (chr23+1)&0x07 );
SetCRAM_1K_Bank( 0, chr4&0x07 );
SetCRAM_1K_Bank( 1, chr5&0x07 );
SetCRAM_1K_Bank( 2, chr6&0x07 );
SetCRAM_1K_Bank( 3, chr7&0x07 );
} else {
SetCRAM_1K_Bank( 0, (chr01+0)&0x07 );
SetCRAM_1K_Bank( 1, (chr01+1)&0x07 );
SetCRAM_1K_Bank( 2, (chr23+0)&0x07 );
SetCRAM_1K_Bank( 3, (chr23+1)&0x07 );
SetCRAM_1K_Bank( 4, chr4&0x07 );
SetCRAM_1K_Bank( 5, chr5&0x07 );
SetCRAM_1K_Bank( 6, chr6&0x07 );
SetCRAM_1K_Bank( 7, chr7&0x07 );
}
}
}
}
void Mapper189::SaveState( LPBYTE p )
{
p[0] = reg[0];
p[1] = reg[1];
p[2] = chr01;
p[3] = chr23;
p[4] = chr4;
p[5] = chr5;
p[6] = chr6;
p[7] = chr7;
p[ 8] = irq_enable;
p[ 9] = irq_counter;
p[10] = irq_latch;
p[16] = protect_dat[0];
p[17] = protect_dat[1];
p[18] = protect_dat[2];
p[19] = protect_dat[3];
p[20] = lwd;
}
void Mapper189::LoadState( LPBYTE p )
{
reg[0] = p[0];
reg[1] = p[1];
chr01 = p[2];
chr23 = p[3];
chr4 = p[4];
chr5 = p[5];
chr6 = p[6];
chr7 = p[7];
irq_enable = p[ 8];
irq_counter = p[ 9];
irq_latch = p[10];
protect_dat[0] = p[16];
protect_dat[1] = p[17];
protect_dat[2] = p[18];
protect_dat[3] = p[19];
lwd = p[20];
}