AxibugEmuOnline/References/virtuanessrc097-master/NES/Mapper/Mapper188.cpp
2024-08-05 17:58:53 +08:00

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//////////////////////////////////////////////////////////////////////////
// Mapper188 Bandai Karaoke Studio //
//////////////////////////////////////////////////////////////////////////
void Mapper188::Reset()
{
if( PROM_8K_SIZE > 16 ) {
SetPROM_32K_Bank( 0, 1, 14, 15 );
} else {
SetPROM_32K_Bank( 0, 1, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
}
}
void Mapper188::Write( WORD addr, BYTE data )
{
if( data ) {
if( data & 0x10 ) {
data &= 0x07;
SetPROM_16K_Bank( 4, data );
} else {
SetPROM_16K_Bank( 4, data+8 );
}
} else {
if( PROM_8K_SIZE == 0x10 ) {
SetPROM_16K_Bank( 4, 7 );
} else {
SetPROM_16K_Bank( 4, 8 );
}
}
}