48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
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//////////////////////////////////////////////////////////////////////////
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// Mapper178 Education / WaiXing_FS305 //
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//////////////////////////////////////////////////////////////////////////
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void Mapper178::Reset()
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{
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reg[0]=0;
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reg[1]=0;
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reg[2]=0;
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banknum=0;
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SetBank_CPU();
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OP_rom = 0;
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DWORD crc = nes->rom->GetPROM_CRC();
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if( crc == 0x925926BC //[ES-XXXX] Kou Dai Zuan Shi Zhi Chong Wu Xiao Jing Ling 2 (C)
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|| crc == 0xB0B13DBD ) //[ES-XXXX] Chong Wu Fei Cui Zhi Chong Wu Xiao Jing Ling IV (C)
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{
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OP_rom = 1;
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}
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}
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void Mapper178::WriteLow( WORD addr, BYTE data )
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{
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// if( addr >= 0x4000 && addr <= 0x5FFF ) DEBUGOUT("Address=%04X Data=%02X\n", addr&0xFFFF, data&0xFF );
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if( addr==0x4800 ){
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if( data & 0x01 ) SetVRAM_Mirror( VRAM_HMIRROR );
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else SetVRAM_Mirror( VRAM_VMIRROR );
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}else if( addr==0x4801 ){
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reg[0]=(data>>1) & 0x0F;
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if(OP_rom) reg[0]=data<<2;
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SetBank_CPU();
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}else if( addr==0x4802 ){
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reg[1]=data<<2;
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if(OP_rom) reg[1]=data;
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SetBank_CPU();
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}else if( addr==0x4803 ){
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//unknown
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reg[2]=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 Mapper178::SetBank_CPU()
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{
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banknum=reg[0] | reg[1];
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// DEBUGOUT("Bank=%02X\n", banknum&0xFF );
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SetPROM_32K_Bank( banknum );
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}
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