forked from sin365/AxibugEmuOnline
249 lines
13 KiB
C++
249 lines
13 KiB
C++
//////////////////////////////////////////////////////////////////////////
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// Mapper189 Street Fighter 2 Yoko/Master Fighter 2 //
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// 快打傅説 Street Fighter IV (GOUDER) //
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//////////////////////////////////////////////////////////////////////////
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void Mapper189::Reset()
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{
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SetPROM_32K_Bank( PROM_8K_SIZE-4, PROM_8K_SIZE-3, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
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if( VROM_1K_SIZE ) {
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SetVROM_8K_Bank( 0 );
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}
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reg[0] = reg[1] = 0;
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chr01 = 0;
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chr23 = 2;
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chr4 = 4;
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chr5 = 5;
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chr6 = 6;
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chr7 = 7;
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SetBank_PPU();
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irq_enable = 0;
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irq_counter = 0;
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irq_latch = 0;
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for( INT i = 0; i < 4; i++ ) {
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protect_dat[i] = 0;
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}
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lwd = 0xFF;
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patch = 0;
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DWORD crc = nes->rom->GetPROM_CRC();
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if( crc == 0x20ca2ad3 ) { // Street Fighter IV (GOUDER)
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patch = 1;
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SetPROM_32K_Bank( 0 );
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// $4000-$5FFF
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SetPROM_Bank( 2, XRAM, BANKTYPE_ROM );
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}
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}
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void Mapper189::WriteLow( WORD addr, BYTE data )
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{
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if( (addr & 0xFF00) == 0x4100 ) {
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// Street Fighter 2 YOKO
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SetPROM_32K_Bank( (data&0x30)>>4 );
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} else if( (addr & 0xFF00) == 0x6100 ) {
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// Master Fighter 2
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SetPROM_32K_Bank( data&0x03 );
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}
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if( patch ) {
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// Street Fighter IV (GOUDER)
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BYTE a5000xordat[256] = {
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01,
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0x00, 0x10, 0x40, 0x50, 0x00, 0x10, 0x40, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x08, 0x18, 0x48, 0x58, 0x08, 0x18, 0x48, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x10, 0x40, 0x50, 0x00, 0x10, 0x40, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x08, 0x18, 0x48, 0x58, 0x08, 0x18, 0x48, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x58, 0x48, 0x18, 0x08, 0x58, 0x48, 0x18, 0x08,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x50, 0x40, 0x10, 0x00, 0x50, 0x40, 0x10, 0x00,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x58, 0x48, 0x18, 0x08, 0x58, 0x48, 0x18, 0x08,
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0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x50, 0x40, 0x10, 0x00, 0x50, 0x40, 0x10, 0x00,
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0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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if( (addr >= 0x4800) && (addr <= 0x4FFF) ) {
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SetPROM_32K_Bank( ((data&0x10)>>3)+(data&0x1) );
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if( !nes->rom->Is4SCREEN() ) {
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if( data & 0x20 ) SetVRAM_Mirror( VRAM_HMIRROR );
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else SetVRAM_Mirror( VRAM_VMIRROR );
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}
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}
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if( (addr>=0x5000) && (addr<=0x57FF) ) {
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lwd = data;
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}
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if( (addr>=0x5800) && (addr<=0x5FFF) ) {
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// XRAM[0x1000+(addr & 3)] =
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// $5800 "JMP $xxxx" write
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XRAM[0x1800+(addr & 3)] =
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protect_dat[ addr & 3 ] = data ^ a5000xordat[ lwd ];
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}
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}
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}
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void Mapper189::Write( WORD addr, BYTE data )
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{
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switch( addr&0xE001 ) {
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case 0x8000:
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reg[0] = data;
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SetBank_PPU();
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break;
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case 0x8001:
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reg[1] = data;
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SetBank_PPU();
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switch( reg[0] & 0x07 ) {
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case 0x00:
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chr01 = data & 0xFE;
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SetBank_PPU();
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break;
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case 0x01:
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chr23 = data & 0xFE;
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SetBank_PPU();
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break;
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case 0x02:
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chr4 = data;
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SetBank_PPU();
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break;
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case 0x03:
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chr5 = data;
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SetBank_PPU();
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break;
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case 0x04:
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chr6 = data;
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SetBank_PPU();
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break;
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case 0x05:
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chr7 = data;
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SetBank_PPU();
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break;
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}
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break;
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case 0xA000:
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if( data&0x01 ) SetVRAM_Mirror( VRAM_HMIRROR );
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else SetVRAM_Mirror( VRAM_VMIRROR );
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break;
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case 0xC000:
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irq_counter = data;
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break;
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case 0xC001:
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irq_latch = data;
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break;
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case 0xE000:
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irq_enable = 0;
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nes->cpu->ClrIRQ( IRQ_MAPPER );
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break;
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case 0xE001:
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irq_enable = 0xFF;
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break;
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}
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}
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void Mapper189::HSync( INT scanline )
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{
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if( (scanline >= 0 && scanline <= 239) ) {
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if( nes->ppu->IsDispON() ) {
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if( irq_enable ) {
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if( !(--irq_counter) ) {
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// if( !(irq_counter--) ) {
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irq_counter = irq_latch;
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nes->cpu->SetIRQ( IRQ_MAPPER );
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}
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}
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}
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}
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}
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void Mapper189::SetBank_PPU()
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{
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if( patch ) {
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SetVROM_8K_Bank( chr01, chr01+1, chr23, chr23+1,
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chr4, chr5, chr6, chr7 );
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} else {
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if( VROM_1K_SIZE ) {
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if( reg[0] & 0x80 ) {
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SetVROM_8K_Bank( chr4, chr5, chr6, chr7,
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chr01, chr01+1, chr23, chr23+1 );
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} else {
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SetVROM_8K_Bank( chr01, chr01+1, chr23, chr23+1,
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chr4, chr5, chr6, chr7 );
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}
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} else {
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if( reg[0] & 0x80 ) {
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SetCRAM_1K_Bank( 4, (chr01+0)&0x07 );
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SetCRAM_1K_Bank( 5, (chr01+1)&0x07 );
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SetCRAM_1K_Bank( 6, (chr23+0)&0x07 );
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SetCRAM_1K_Bank( 7, (chr23+1)&0x07 );
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SetCRAM_1K_Bank( 0, chr4&0x07 );
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SetCRAM_1K_Bank( 1, chr5&0x07 );
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SetCRAM_1K_Bank( 2, chr6&0x07 );
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SetCRAM_1K_Bank( 3, chr7&0x07 );
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} else {
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SetCRAM_1K_Bank( 0, (chr01+0)&0x07 );
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SetCRAM_1K_Bank( 1, (chr01+1)&0x07 );
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SetCRAM_1K_Bank( 2, (chr23+0)&0x07 );
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SetCRAM_1K_Bank( 3, (chr23+1)&0x07 );
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SetCRAM_1K_Bank( 4, chr4&0x07 );
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SetCRAM_1K_Bank( 5, chr5&0x07 );
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SetCRAM_1K_Bank( 6, chr6&0x07 );
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SetCRAM_1K_Bank( 7, chr7&0x07 );
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}
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}
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}
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}
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void Mapper189::SaveState( LPBYTE p )
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{
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p[0] = reg[0];
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p[1] = reg[1];
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p[2] = chr01;
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p[3] = chr23;
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p[4] = chr4;
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p[5] = chr5;
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p[6] = chr6;
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p[7] = chr7;
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p[ 8] = irq_enable;
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p[ 9] = irq_counter;
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p[10] = irq_latch;
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p[16] = protect_dat[0];
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p[17] = protect_dat[1];
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p[18] = protect_dat[2];
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p[19] = protect_dat[3];
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p[20] = lwd;
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}
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void Mapper189::LoadState( LPBYTE p )
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{
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reg[0] = p[0];
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reg[1] = p[1];
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chr01 = p[2];
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chr23 = p[3];
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chr4 = p[4];
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chr5 = p[5];
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chr6 = p[6];
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chr7 = p[7];
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irq_enable = p[ 8];
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irq_counter = p[ 9];
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irq_latch = p[10];
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protect_dat[0] = p[16];
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protect_dat[1] = p[17];
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protect_dat[2] = p[18];
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protect_dat[3] = p[19];
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lwd = p[20];
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}
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