forked from sin365/AxibugEmuOnline
43 lines
1.1 KiB
C#
43 lines
1.1 KiB
C#
using System.IO;
|
|
|
|
namespace MyNes.Core
|
|
{
|
|
[BoardInfo("15-in-1 Color Dreams", 46)]
|
|
internal class Mapper046 : Board
|
|
{
|
|
private int prg_reg;
|
|
|
|
private int chr_reg;
|
|
|
|
internal override void WriteSRM(ref ushort address, ref byte data)
|
|
{
|
|
prg_reg = (prg_reg & 1) | ((data << 1) & 0x1E);
|
|
chr_reg = (chr_reg & 7) | ((data >> 1) & 0x78);
|
|
Switch08KCHR(chr_reg);
|
|
Switch32KPRG(prg_reg, PRGArea.Area8000);
|
|
}
|
|
|
|
internal override void WritePRG(ref ushort address, ref byte data)
|
|
{
|
|
prg_reg = (data & 1) | (prg_reg & 0x1E);
|
|
chr_reg = ((data >> 4) & 7) | (chr_reg & 0x78);
|
|
Switch08KCHR(chr_reg);
|
|
Switch32KPRG(prg_reg, PRGArea.Area8000);
|
|
}
|
|
|
|
internal override void WriteStateData(ref BinaryWriter stream)
|
|
{
|
|
base.WriteStateData(ref stream);
|
|
stream.Write(prg_reg);
|
|
stream.Write(chr_reg);
|
|
}
|
|
|
|
internal override void ReadStateData(ref BinaryReader stream)
|
|
{
|
|
base.ReadStateData(ref stream);
|
|
prg_reg = stream.ReadInt32();
|
|
chr_reg = stream.ReadInt32();
|
|
}
|
|
}
|
|
}
|