83 lines
1.6 KiB
C++
83 lines
1.6 KiB
C++
//////////////////////////////////////////////////////////////////////////
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// Mapper082 Taito C075 //
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//////////////////////////////////////////////////////////////////////////
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void Mapper082::Reset()
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{
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reg = 0;
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SetPROM_32K_Bank( 0, 1, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
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if( VROM_8K_SIZE ) {
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SetVROM_8K_Bank( 0 );
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}
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SetVRAM_Mirror( VRAM_VMIRROR );
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}
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void Mapper082::WriteLow( WORD addr, BYTE data )
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{
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switch( addr ) {
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case 0x7EF0:
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if( reg ) {
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SetVROM_2K_Bank( 4, data>>1 );
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} else {
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SetVROM_2K_Bank( 0, data>>1 );
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}
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break;
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case 0x7EF1:
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if( reg ) {
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SetVROM_2K_Bank( 6, data>>1 );
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} else {
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SetVROM_2K_Bank( 2, data>>1 );
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}
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break;
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case 0x7EF2:
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if( reg ) SetVROM_1K_Bank( 0, data );
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else SetVROM_1K_Bank( 4, data );
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break;
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case 0x7EF3:
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if( reg ) SetVROM_1K_Bank( 1, data );
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else SetVROM_1K_Bank( 5, data );
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break;
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case 0x7EF4:
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if( reg ) SetVROM_1K_Bank( 2, data );
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else SetVROM_1K_Bank( 6, data );
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break;
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case 0x7EF5:
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if( reg ) SetVROM_1K_Bank( 3, data );
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else SetVROM_1K_Bank( 7, data );
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break;
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case 0x7EF6:
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reg = data & 0x02;
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if( data & 0x01 ) SetVRAM_Mirror( VRAM_VMIRROR );
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else SetVRAM_Mirror( VRAM_HMIRROR );
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break;
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case 0x7EFA:
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SetPROM_8K_Bank( 4, data>>2 );
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break;
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case 0x7EFB:
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SetPROM_8K_Bank( 5, data>>2 );
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break;
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case 0x7EFC:
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SetPROM_8K_Bank( 6, data>>2 );
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break;
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default:
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Mapper::WriteLow( addr, data );
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break;
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}
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}
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void Mapper082::SaveState( LPBYTE p )
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{
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p[0] = reg;
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}
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void Mapper082::LoadState( LPBYTE p )
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{
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reg = p[0];
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}
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