136 lines
2.9 KiB
C++
136 lines
2.9 KiB
C++
//////////////////////////////////////////////////////////////////////////
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// Mapper168 Subor (PPUExtLatch) //
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//////////////////////////////////////////////////////////////////////////
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void Mapper168::Reset()
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{
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reg5000 = 0;
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reg5200 = 0;
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reg5300 = 0;
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PPU_SW = 0;
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NT_data = 0;
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nes->ppu->SetExtLatchMode( TRUE );
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SetPROM_16K_Bank(4,0);
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SetPROM_16K_Bank(6,0);
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Rom_Type = 0;
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DWORD crc = nes->rom->GetPROM_CRC();
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if( crc == 0x0A9808AE ) //[Subor] Karaoke (C)
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{
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Rom_Type = 1;
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SetPROM_32K_Bank( 0 );
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nes->SetVideoMode( 2 );
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}
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if( crc == 0x12D61CE8 ) //[Subor] Subor V11.0 (C)
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{
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Rom_Type = 2;
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}
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}
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BYTE Mapper168::ReadLow( WORD addr )
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{
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if(addr==0x5300) return 0x8F; //返回0x8F，跳过真人语音发声有关的程序段
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return Mapper::ReadLow( addr );
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}
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void Mapper168::WriteLow(WORD addr, BYTE data)
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{
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if(addr==0x5000){
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reg5000 = data;
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SetBank_CPU();
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}else if(addr==0x5200){
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reg5200 = data & 0x7;
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SetBank_CPU();
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}else if(addr==0x5300){
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reg5300 = data;
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}else if(addr>=0x6000){
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CPU_MEM_BANK[addr>>13][addr&0x1FFF] = data;
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}
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}
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void Mapper168::Write(WORD addr, BYTE data)
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{
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if(Rom_Type==1){ //[Subor] Karaoke (C)
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SetPROM_32K_Bank( data&0x1F );
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if(data&0x40) SetVRAM_Mirror( VRAM_HMIRROR );
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else SetVRAM_Mirror( VRAM_VMIRROR );
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if(data&0xC0) PPU_SW = 1;
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else PPU_SW = 0;
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}
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}
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void Mapper168::SetBank_CPU()
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{
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if(reg5200<4) SetPROM_16K_Bank(4,reg5000);
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else SetPROM_32K_Bank(reg5000);
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switch( reg5200 ) {
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case 0:
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SetVRAM_Mirror( VRAM_VMIRROR );
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PPU_SW = 0;
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break;
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case 2:
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SetVRAM_Mirror( VRAM_VMIRROR );
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PPU_SW = 1;
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break;
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case 1:
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case 3:
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SetVRAM_Mirror( VRAM_HMIRROR );
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PPU_SW = 0;
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break;
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case 5:
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if(reg5000==4 && Rom_Type==2){ //Special for [Subor] Subor V11.0 (C) - Tank (坦克大战)
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nes->ppu->SetExtLatchMode( FALSE );
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SetVRAM_Mirror( VRAM_HMIRROR );
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}
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break;
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}
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}
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void Mapper168::PPU_Latch( WORD addr )
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{
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if((addr&0xF000)==0x2000){
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NT_data=(addr>>8)&0x03;
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}
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}
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void Mapper168::PPU_ExtLatch( WORD ntbladr, BYTE& chr_l, BYTE& chr_h, BYTE& attr )
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{
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INT loopy_v = nes->ppu->GetPPUADDR();
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INT loopy_y = nes->ppu->GetTILEY();
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INT tileofs = (PPUREG[0]&PPU_BGTBL_BIT)<<8;
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INT attradr = 0x23C0+(loopy_v&0x0C00)+((loopy_v&0x0380)>>4);
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INT attrsft = (ntbladr&0x0040)>>4;
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LPBYTE pNTBL = PPU_MEM_BANK[ntbladr>>10];
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INT ntbl_x = ntbladr&0x001F;
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INT tileadr, ntb;
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ntb = (ntbladr>>10)&3;
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if(ntb==2)
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tileofs |= 0x1000;
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else if(ntb && PPU_SW)
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tileofs |= 0x1000;
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else
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tileofs |= 0x0000;
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attradr &= 0x3FF;
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attr = ((pNTBL[attradr+(ntbl_x>>2)]>>((ntbl_x&2)+attrsft))&3)<<2;
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tileadr = tileofs+pNTBL[ntbladr&0x03FF]*0x10+loopy_y;
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chr_l = PPU_MEM_BANK[tileadr>>10][ tileadr&0x03FF ];
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chr_h = PPU_MEM_BANK[tileadr>>10][(tileadr&0x03FF)+8];
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}
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void Mapper168::SaveState( LPBYTE p )
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{
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p[0] = reg5000;
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p[1] = reg5200;
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}
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void Mapper168::LoadState( LPBYTE p )
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{
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reg5000 = p[0];
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reg5200 = p[1];
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}
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