forked from sin365/AxibugEmuOnline
60 lines
2.5 KiB
C++
60 lines
2.5 KiB
C++
//////////////////////////////////////////////////////////////////////////
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// Mapper226 76-in-1 //
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//////////////////////////////////////////////////////////////////////////
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void Mapper226::Reset()
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{
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SetPROM_32K_Bank( 0 );
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reg[0] = 0;
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reg[1] = 0;
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}
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void Mapper226::Write( WORD addr, BYTE data )
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{
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if( addr & 0x001 ) {
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reg[1] = data;
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} else {
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reg[0] = data;
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}
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if( reg[0] & 0x40 ) {
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SetVRAM_Mirror( VRAM_VMIRROR );
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} else {
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SetVRAM_Mirror( VRAM_HMIRROR );
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}
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BYTE bank = ((reg[0]&0x1E)>>1)|((reg[0]&0x80)>>3)|((reg[1]&0x01)<<5);
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if( reg[0] & 0x20 ) {
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if( reg[0] & 0x01 ) {
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SetPROM_8K_Bank( 4, bank*4+2 );
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SetPROM_8K_Bank( 5, bank*4+3 );
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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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} else {
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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+0 );
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SetPROM_8K_Bank( 7, bank*4+1 );
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}
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} else {
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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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}
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void Mapper226::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 Mapper226::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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