forked from sin365/AxibugEmuOnline
49 lines
2.2 KiB
C++
49 lines
2.2 KiB
C++
//////////////////////////////////////////////////////////////////////////
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// Mapper232 Quattro Games //
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//////////////////////////////////////////////////////////////////////////
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void Mapper232::Reset()
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{
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SetPROM_32K_Bank( 0, 1, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
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reg[0] = 0x0C;
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reg[1] = 0x00;
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}
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void Mapper232::WriteLow( WORD addr, BYTE data )
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{
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if( addr >= 0x6000 ) {
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Write( addr, data );
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}
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}
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void Mapper232::Write( WORD addr, BYTE data )
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{
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// if( addr == 0x9000 ) {
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// reg[0] = (data & 0x18)>>1;
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// } else if( addr >= 0xA000 && addr <= 0xFFFF ) {
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// reg[1] = data & 0x03;
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// }
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if( addr <= 0x9FFF ) {
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reg[0] = (data & 0x18)>>1;
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} else {
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reg[1] = data & 0x03;
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}
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SetPROM_8K_Bank( 4, (reg[0]|reg[1])*2+0 );
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SetPROM_8K_Bank( 5, (reg[0]|reg[1])*2+1 );
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SetPROM_8K_Bank( 6, (reg[0]|0x03)*2+0 );
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SetPROM_8K_Bank( 7, (reg[0]|0x03)*2+1 );
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}
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void Mapper232::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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}
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void Mapper232::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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}
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