forked from sin365/AxibugEmuOnline
35 lines
1.9 KiB
C++
35 lines
1.9 KiB
C++
//////////////////////////////////////////////////////////////////////////
|
||
// Mapper233 42-in-1 //
|
||
//////////////////////////////////////////////////////////////////////////
|
||
void Mapper233::Reset()
|
||
{
|
||
SetPROM_32K_Bank( 0, 1, 2, 3 );
|
||
}
|
||
|
||
void Mapper233::Write( WORD addr, BYTE data )
|
||
{
|
||
if( data & 0x20 ) {
|
||
SetPROM_8K_Bank( 4, (data&0x1F)*2+0 );
|
||
SetPROM_8K_Bank( 5, (data&0x1F)*2+1 );
|
||
SetPROM_8K_Bank( 6, (data&0x1F)*2+0 );
|
||
SetPROM_8K_Bank( 7, (data&0x1F)*2+1 );
|
||
} else {
|
||
BYTE bank = (data&0x1E)>>1;
|
||
|
||
SetPROM_8K_Bank( 4, bank*4+0 );
|
||
SetPROM_8K_Bank( 5, bank*4+1 );
|
||
SetPROM_8K_Bank( 6, bank*4+2 );
|
||
SetPROM_8K_Bank( 7, bank*4+3 );
|
||
}
|
||
|
||
if( (data&0xC0) == 0x00 ) {
|
||
SetVRAM_Mirror( 0, 0, 0, 1 );
|
||
} else if( (data&0xC0) == 0x40 ) {
|
||
SetVRAM_Mirror( VRAM_VMIRROR );
|
||
} else if( (data&0xC0) == 0x80 ) {
|
||
SetVRAM_Mirror( VRAM_HMIRROR );
|
||
} else {
|
||
SetVRAM_Mirror( VRAM_MIRROR4H );
|
||
}
|
||
}
|