35 lines
1.9 KiB
C++
35 lines
1.9 KiB
C++
//////////////////////////////////////////////////////////////////////////
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// Mapper233 42-in-1 //
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//////////////////////////////////////////////////////////////////////////
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void Mapper233::Reset()
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{
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SetPROM_32K_Bank( 0, 1, 2, 3 );
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}
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void Mapper233::Write( WORD addr, BYTE data )
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{
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if( data & 0x20 ) {
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SetPROM_8K_Bank( 4, (data&0x1F)*2+0 );
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SetPROM_8K_Bank( 5, (data&0x1F)*2+1 );
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SetPROM_8K_Bank( 6, (data&0x1F)*2+0 );
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SetPROM_8K_Bank( 7, (data&0x1F)*2+1 );
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} else {
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BYTE bank = (data&0x1E)>>1;
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SetPROM_8K_Bank( 4, bank*4+0 );
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SetPROM_8K_Bank( 5, bank*4+1 );
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SetPROM_8K_Bank( 6, bank*4+2 );
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SetPROM_8K_Bank( 7, bank*4+3 );
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}
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if( (data&0xC0) == 0x00 ) {
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SetVRAM_Mirror( 0, 0, 0, 1 );
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} else if( (data&0xC0) == 0x40 ) {
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SetVRAM_Mirror( VRAM_VMIRROR );
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} else if( (data&0xC0) == 0x80 ) {
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SetVRAM_Mirror( VRAM_HMIRROR );
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} else {
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SetVRAM_Mirror( VRAM_MIRROR4H );
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}
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}
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