AxibugEmuOnline/References/virtuanessrc097-master/NES/Mapper/Mapper015.cpp
2024-08-05 17:58:53 +08:00

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//////////////////////////////////////////////////////////////////////////
// Mapper015 100-in-1 chip //
//////////////////////////////////////////////////////////////////////////
void Mapper015::Reset()
{
SetPROM_32K_Bank( 0, 1, 2, 3 );
}
void Mapper015::Write( WORD addr, BYTE data )
{
switch( addr ) {
case 0x8000:
if( data&0x80 ) {
SetPROM_8K_Bank( 4, (data&0x3F)*2+1 );
SetPROM_8K_Bank( 5, (data&0x3F)*2+0 );
SetPROM_8K_Bank( 6, (data&0x3F)*2+3 );
SetPROM_8K_Bank( 7, (data&0x3F)*2+2 );
} else {
SetPROM_8K_Bank( 4, (data&0x3F)*2+0 );
SetPROM_8K_Bank( 5, (data&0x3F)*2+1 );
SetPROM_8K_Bank( 6, (data&0x3F)*2+2 );
SetPROM_8K_Bank( 7, (data&0x3F)*2+3 );
}
if( data&0x40 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
break;
case 0x8001:
if( data&0x80 ) {
SetPROM_8K_Bank( 6, (data&0x3F)*2+1 );
SetPROM_8K_Bank( 7, (data&0x3F)*2+0 );
} else {
SetPROM_8K_Bank( 6, (data&0x3F)*2+0 );
SetPROM_8K_Bank( 7, (data&0x3F)*2+1 );
}
break;
case 0x8002:
if( data&0x80 ) {
SetPROM_8K_Bank( 4, (data&0x3F)*2+1 );
SetPROM_8K_Bank( 5, (data&0x3F)*2+1 );
SetPROM_8K_Bank( 6, (data&0x3F)*2+1 );
SetPROM_8K_Bank( 7, (data&0x3F)*2+1 );
} else {
SetPROM_8K_Bank( 4, (data&0x3F)*2+0 );
SetPROM_8K_Bank( 5, (data&0x3F)*2+0 );
SetPROM_8K_Bank( 6, (data&0x3F)*2+0 );
SetPROM_8K_Bank( 7, (data&0x3F)*2+0 );
}
break;
case 0x8003:
if( data&0x80 ) {
SetPROM_8K_Bank( 6, (data&0x3F)*2+1 );
SetPROM_8K_Bank( 7, (data&0x3F)*2+0 );
} else {
SetPROM_8K_Bank( 6, (data&0x3F)*2+0 );
SetPROM_8K_Bank( 7, (data&0x3F)*2+1 );
}
if( data&0x40 ) SetVRAM_Mirror( VRAM_HMIRROR );
else SetVRAM_Mirror( VRAM_VMIRROR );
break;
}
}