139 lines
4.0 KiB
C#
139 lines
4.0 KiB
C#
using System.IO;
|
|
|
|
namespace MyNes.Core
|
|
{
|
|
[BoardInfo("VRC2", 22)]
|
|
internal class Mapper022 : Board
|
|
{
|
|
private int[] chr_Reg;
|
|
|
|
internal override void HardReset()
|
|
{
|
|
base.HardReset();
|
|
Switch16KPRG(PRG_ROM_16KB_Mask, PRGArea.AreaC000);
|
|
chr_Reg = new int[8];
|
|
}
|
|
|
|
internal override void WritePRG(ref ushort address, ref byte data)
|
|
{
|
|
switch (address)
|
|
{
|
|
case 32768:
|
|
case 32769:
|
|
case 32770:
|
|
case 32771:
|
|
Switch08KPRG(data & 0xF, PRGArea.Area8000);
|
|
break;
|
|
case 36864:
|
|
case 36865:
|
|
case 36866:
|
|
case 36867:
|
|
switch (data & 3)
|
|
{
|
|
case 0:
|
|
Switch01KNMTFromMirroring(Mirroring.Vert);
|
|
break;
|
|
case 1:
|
|
Switch01KNMTFromMirroring(Mirroring.Horz);
|
|
break;
|
|
case 2:
|
|
Switch01KNMTFromMirroring(Mirroring.OneScA);
|
|
break;
|
|
case 3:
|
|
Switch01KNMTFromMirroring(Mirroring.OneScB);
|
|
break;
|
|
}
|
|
break;
|
|
case 40960:
|
|
case 40961:
|
|
case 40962:
|
|
case 40963:
|
|
Switch08KPRG(data & 0xF, PRGArea.AreaA000);
|
|
break;
|
|
case 45056:
|
|
chr_Reg[0] = (chr_Reg[0] & 0xF0) | (data & 0xF);
|
|
Switch01KCHR(chr_Reg[0] >> 1, CHRArea.Area0000);
|
|
break;
|
|
case 45058:
|
|
chr_Reg[0] = (chr_Reg[0] & 0xF) | ((data & 0xF) << 4);
|
|
Switch01KCHR(chr_Reg[0] >> 1, CHRArea.Area0000);
|
|
break;
|
|
case 45057:
|
|
chr_Reg[1] = (chr_Reg[1] & 0xF0) | (data & 0xF);
|
|
Switch01KCHR(chr_Reg[1] >> 1, CHRArea.Area0400);
|
|
break;
|
|
case 45059:
|
|
chr_Reg[1] = (chr_Reg[1] & 0xF) | ((data & 0xF) << 4);
|
|
Switch01KCHR(chr_Reg[1] >> 1, CHRArea.Area0400);
|
|
break;
|
|
case 49152:
|
|
chr_Reg[2] = (chr_Reg[2] & 0xF0) | (data & 0xF);
|
|
Switch01KCHR(chr_Reg[2] >> 1, CHRArea.Area0800);
|
|
break;
|
|
case 49154:
|
|
chr_Reg[2] = (chr_Reg[2] & 0xF) | ((data & 0xF) << 4);
|
|
Switch01KCHR(chr_Reg[2] >> 1, CHRArea.Area0800);
|
|
break;
|
|
case 49153:
|
|
chr_Reg[3] = (chr_Reg[3] & 0xF0) | (data & 0xF);
|
|
Switch01KCHR(chr_Reg[3] >> 1, CHRArea.Area0C00);
|
|
break;
|
|
case 49155:
|
|
chr_Reg[3] = (chr_Reg[3] & 0xF) | ((data & 0xF) << 4);
|
|
Switch01KCHR(chr_Reg[3] >> 1, CHRArea.Area0C00);
|
|
break;
|
|
case 53248:
|
|
chr_Reg[4] = (chr_Reg[4] & 0xF0) | (data & 0xF);
|
|
Switch01KCHR(chr_Reg[4] >> 1, CHRArea.Area1000);
|
|
break;
|
|
case 53250:
|
|
chr_Reg[4] = (chr_Reg[4] & 0xF) | ((data & 0xF) << 4);
|
|
Switch01KCHR(chr_Reg[4] >> 1, CHRArea.Area1000);
|
|
break;
|
|
case 53249:
|
|
chr_Reg[5] = (chr_Reg[5] & 0xF0) | (data & 0xF);
|
|
Switch01KCHR(chr_Reg[5] >> 1, CHRArea.Area1400);
|
|
break;
|
|
case 53251:
|
|
chr_Reg[5] = (chr_Reg[5] & 0xF) | ((data & 0xF) << 4);
|
|
Switch01KCHR(chr_Reg[5] >> 1, CHRArea.Area1400);
|
|
break;
|
|
case 57344:
|
|
chr_Reg[6] = (chr_Reg[6] & 0xF0) | (data & 0xF);
|
|
Switch01KCHR(chr_Reg[6] >> 1, CHRArea.Area1800);
|
|
break;
|
|
case 57346:
|
|
chr_Reg[6] = (chr_Reg[6] & 0xF) | ((data & 0xF) << 4);
|
|
Switch01KCHR(chr_Reg[6] >> 1, CHRArea.Area1800);
|
|
break;
|
|
case 57345:
|
|
chr_Reg[7] = (chr_Reg[7] & 0xF0) | (data & 0xF);
|
|
Switch01KCHR(chr_Reg[7] >> 1, CHRArea.Area1C00);
|
|
break;
|
|
case 57347:
|
|
chr_Reg[7] = (chr_Reg[7] & 0xF) | ((data & 0xF) << 4);
|
|
Switch01KCHR(chr_Reg[7] >> 1, CHRArea.Area1C00);
|
|
break;
|
|
}
|
|
}
|
|
|
|
internal override void WriteStateData(ref BinaryWriter stream)
|
|
{
|
|
base.WriteStateData(ref stream);
|
|
for (int i = 0; i < chr_Reg.Length; i++)
|
|
{
|
|
stream.Write(chr_Reg[i]);
|
|
}
|
|
}
|
|
|
|
internal override void ReadStateData(ref BinaryReader stream)
|
|
{
|
|
base.ReadStateData(ref stream);
|
|
for (int i = 0; i < chr_Reg.Length; i++)
|
|
{
|
|
chr_Reg[i] = stream.ReadInt32();
|
|
}
|
|
}
|
|
}
|
|
}
|