54 lines
1.3 KiB
C#
54 lines
1.3 KiB
C#
//////////////////////////////////////////////////////////////////////////
|
|
// Mapper229 31-in-1 //
|
|
//////////////////////////////////////////////////////////////////////////
|
|
using static VirtualNes.MMU;
|
|
using BYTE = System.Byte;
|
|
|
|
|
|
namespace VirtualNes.Core
|
|
{
|
|
public class Mapper229 : Mapper
|
|
{
|
|
public Mapper229(NES parent) : base(parent)
|
|
{
|
|
}
|
|
|
|
public override void Reset()
|
|
{
|
|
SetPROM_32K_Bank(0);
|
|
SetVROM_8K_Bank(0);
|
|
}
|
|
|
|
//void Mapper229::Write(WORD addr, BYTE data)
|
|
public override void Write(ushort addr, byte data)
|
|
{
|
|
if ((addr & 0x001E) != 0)
|
|
{
|
|
BYTE prg = (byte)(addr & 0x001F);
|
|
|
|
SetPROM_8K_Bank(4, prg * 2 + 0);
|
|
SetPROM_8K_Bank(5, prg * 2 + 1);
|
|
SetPROM_8K_Bank(6, prg * 2 + 0);
|
|
SetPROM_8K_Bank(7, prg * 2 + 1);
|
|
|
|
SetVROM_8K_Bank(addr & 0x0FFF);
|
|
}
|
|
else
|
|
{
|
|
SetPROM_32K_Bank(0);
|
|
SetVROM_8K_Bank(0);
|
|
}
|
|
|
|
if ((addr & 0x0020) != 0)
|
|
{
|
|
SetVRAM_Mirror(VRAM_HMIRROR);
|
|
}
|
|
else
|
|
{
|
|
SetVRAM_Mirror(VRAM_VMIRROR);
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|