AxibugEmuOnline/virtuanessrc097-master/NES/Mapper/Mapper230.cpp

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//////////////////////////////////////////////////////////////////////////
// Mapper230 22-in-1 //
//////////////////////////////////////////////////////////////////////////
void Mapper230::Reset()
{
if( rom_sw ) {
rom_sw = 0;
} else {
rom_sw = 1;
}
if( rom_sw ) {
SetPROM_32K_Bank( 0, 1, 14, 15 );
} else {
SetPROM_32K_Bank( 16, 17, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
}
}
void Mapper230::Write( WORD addr, BYTE data )
{
if( rom_sw ) {
SetPROM_8K_Bank( 4, (data&0x07)*2+0 );
SetPROM_8K_Bank( 5, (data&0x07)*2+1 );
} else {
if( data & 0x20 ) {
SetPROM_8K_Bank( 4, (data&0x1F)*2+16 );
SetPROM_8K_Bank( 5, (data&0x1F)*2+17 );
SetPROM_8K_Bank( 6, (data&0x1F)*2+16 );
SetPROM_8K_Bank( 7, (data&0x1F)*2+17 );
} else {
SetPROM_8K_Bank( 4, (data&0x1E)*2+16 );
SetPROM_8K_Bank( 5, (data&0x1E)*2+17 );
SetPROM_8K_Bank( 6, (data&0x1E)*2+18 );
SetPROM_8K_Bank( 7, (data&0x1E)*2+19 );
}
if( data & 0x40 ) {
SetVRAM_Mirror( VRAM_VMIRROR );
} else {
SetVRAM_Mirror( VRAM_HMIRROR );
}
}
}