////////////////////////////////////////////////////////////////////////// // Mapper227 1200-in-1 // ////////////////////////////////////////////////////////////////////////// void Mapper227::Reset() { SetPROM_32K_Bank( 0, 1, 0, 1 ); } void Mapper227::Write( WORD addr, BYTE data ) { BYTE bank = ((addr&0x0100)>>4)|((addr&0x0078)>>3); if( addr & 0x0001 ) { SetPROM_32K_Bank( bank ); } else { if( addr & 0x0004 ) { SetPROM_8K_Bank( 4, bank*4+2 ); SetPROM_8K_Bank( 5, bank*4+3 ); SetPROM_8K_Bank( 6, bank*4+2 ); SetPROM_8K_Bank( 7, bank*4+3 ); } else { SetPROM_8K_Bank( 4, bank*4+0 ); SetPROM_8K_Bank( 5, bank*4+1 ); SetPROM_8K_Bank( 6, bank*4+0 ); SetPROM_8K_Bank( 7, bank*4+1 ); } } if( !(addr & 0x0080) ) { if( addr & 0x0200 ) { SetPROM_8K_Bank( 6, (bank&0x1C)*4+14 ); SetPROM_8K_Bank( 7, (bank&0x1C)*4+15 ); } else { SetPROM_8K_Bank( 6, (bank&0x1C)*4+0 ); SetPROM_8K_Bank( 7, (bank&0x1C)*4+1 ); } } if( addr & 0x0002 ) { SetVRAM_Mirror( VRAM_HMIRROR ); } else { SetVRAM_Mirror( VRAM_VMIRROR ); } }