63 lines
1.2 KiB
C++
63 lines
1.2 KiB
C++
//////////////////////////////////////////////////////////////////////////
|
|
// Mapper133 SACHEN CHEN //
|
|
//////////////////////////////////////////////////////////////////////////
|
|
void Mapper134::Reset()
|
|
{
|
|
SetPROM_32K_Bank( 0 );
|
|
// SetPROM_16K_Bank( 6, 0 );
|
|
// SetPROM_16K_Bank( 6, 1 );
|
|
SetVROM_8K_Bank( 0 );
|
|
}
|
|
|
|
void Mapper134::WriteLow( WORD addr, BYTE data )
|
|
{
|
|
switch( addr & 0x4101 ) {
|
|
case 0x4100:
|
|
cmd = data & 0x07;
|
|
break;
|
|
case 0x4101:
|
|
switch( cmd ) {
|
|
case 0:
|
|
prg = 0;
|
|
chr = 3;
|
|
break;
|
|
case 4:
|
|
chr &= 0x3;
|
|
chr |= (data & 0x07) << 2;
|
|
break;
|
|
case 5:
|
|
prg = data & 0x07;
|
|
break;
|
|
case 6:
|
|
chr &= 0x1C;
|
|
chr |= data & 0x3;
|
|
break;
|
|
case 7:
|
|
if( data & 0x01 ) SetVRAM_Mirror( VRAM_HMIRROR );
|
|
else SetVRAM_Mirror( VRAM_VMIRROR );
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
SetPROM_32K_Bank( prg );
|
|
// SetPROM_16K_Bank( 4, (prg<<1)|0 );
|
|
// SetPROM_16K_Bank( 6, (prg<<1)|1 );
|
|
SetVROM_8K_Bank( chr );
|
|
CPU_MEM_BANK[addr>>13][addr&0x1FFF] = data;
|
|
}
|
|
|
|
void Mapper134::SaveState( LPBYTE p )
|
|
{
|
|
p[ 0] = cmd;
|
|
p[ 1] = prg;
|
|
p[ 2] = chr;
|
|
}
|
|
|
|
void Mapper134::LoadState( LPBYTE p )
|
|
{
|
|
cmd = p[ 0];
|
|
prg = p[ 1];
|
|
chr = p[ 2];
|
|
}
|
|
|