139 lines
2.4 KiB
C++
139 lines
2.4 KiB
C++
//////////////////////////////////////////////////////////////////////////
|
|
// Mapper095 Namcot 106M (Dragon Buster) //
|
|
//////////////////////////////////////////////////////////////////////////
|
|
void Mapper095::Reset()
|
|
{
|
|
reg = 0x00;
|
|
prg0 = 0;
|
|
prg1 = 1;
|
|
SetBank_CPU();
|
|
|
|
if( VROM_1K_SIZE ) {
|
|
chr01 = 0;
|
|
chr23 = 2;
|
|
chr4 = 4;
|
|
chr5 = 5;
|
|
chr6 = 6;
|
|
chr7 = 7;
|
|
} else {
|
|
chr01 = chr23 = chr4 = chr5 = chr6 = chr7 = 0;
|
|
}
|
|
|
|
SetBank_PPU();
|
|
|
|
nes->SetRenderMethod( NES::POST_RENDER );
|
|
}
|
|
|
|
void Mapper095::Write( WORD addr, BYTE data )
|
|
{
|
|
switch( addr & 0xE001 ) {
|
|
case 0x8000:
|
|
reg = data;
|
|
SetBank_CPU();
|
|
SetBank_PPU();
|
|
break;
|
|
case 0x8001:
|
|
if( reg <= 0x05 ) {
|
|
if( data & 0x20 ) SetVRAM_Mirror( VRAM_MIRROR4H );
|
|
else SetVRAM_Mirror( VRAM_MIRROR4L );
|
|
data &= 0x1F;
|
|
}
|
|
|
|
switch( reg & 0x07 ) {
|
|
case 0x00:
|
|
if( VROM_1K_SIZE ) {
|
|
chr01 = data & 0xFE;
|
|
SetBank_PPU();
|
|
}
|
|
break;
|
|
case 0x01:
|
|
if( VROM_1K_SIZE ) {
|
|
chr23 = data & 0xFE;
|
|
SetBank_PPU();
|
|
}
|
|
break;
|
|
case 0x02:
|
|
if( VROM_1K_SIZE ) {
|
|
chr4 = data;
|
|
SetBank_PPU();
|
|
}
|
|
break;
|
|
case 0x03:
|
|
if( VROM_1K_SIZE ) {
|
|
chr5 = data;
|
|
SetBank_PPU();
|
|
}
|
|
break;
|
|
case 0x04:
|
|
if( VROM_1K_SIZE ) {
|
|
chr6 = data;
|
|
SetBank_PPU();
|
|
}
|
|
break;
|
|
case 0x05:
|
|
if( VROM_1K_SIZE ) {
|
|
chr7 = data;
|
|
SetBank_PPU();
|
|
}
|
|
break;
|
|
case 0x06:
|
|
prg0 = data;
|
|
SetBank_CPU();
|
|
break;
|
|
case 0x07:
|
|
prg1 = data;
|
|
SetBank_CPU();
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void Mapper095::SetBank_CPU()
|
|
{
|
|
if( reg & 0x40 ) {
|
|
SetPROM_32K_Bank( PROM_8K_SIZE-2, prg1, prg0, PROM_8K_SIZE-1 );
|
|
} else {
|
|
SetPROM_32K_Bank( prg0, prg1, PROM_8K_SIZE-2, PROM_8K_SIZE-1 );
|
|
}
|
|
}
|
|
|
|
void Mapper095::SetBank_PPU()
|
|
{
|
|
if( VROM_1K_SIZE ) {
|
|
if( reg & 0x80 ) {
|
|
SetVROM_8K_Bank( chr4, chr5, chr6, chr7,
|
|
chr01, chr01+1, chr23, chr23+1 );
|
|
} else {
|
|
SetVROM_8K_Bank( chr01, chr01+1, chr23, chr23+1,
|
|
chr4, chr5, chr6, chr7 );
|
|
}
|
|
}
|
|
}
|
|
|
|
void Mapper095::SaveState( LPBYTE p )
|
|
{
|
|
p[0] = reg;
|
|
p[1] = prg0;
|
|
p[2] = prg1;
|
|
p[3] = chr01;
|
|
p[4] = chr23;
|
|
p[5] = chr4;
|
|
p[6] = chr5;
|
|
p[7] = chr6;
|
|
p[8] = chr7;
|
|
}
|
|
|
|
void Mapper095::LoadState( LPBYTE p )
|
|
{
|
|
reg = p[0];
|
|
prg0 = p[1];
|
|
prg1 = p[2];
|
|
chr01 = p[3];
|
|
chr23 = p[4];
|
|
chr4 = p[5];
|
|
chr5 = p[6];
|
|
chr6 = p[7];
|
|
chr7 = p[8];
|
|
}
|