forked from sin365/AxibugEmuOnline
56 lines
1.5 KiB
C#
56 lines
1.5 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper229 31-in-1 //
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//////////////////////////////////////////////////////////////////////////
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using static VirtualNes.MMU;
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using static VirtualNes.Core.CPU;
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using INT = System.Int32;
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using BYTE = System.Byte;
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using System;
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using Codice.CM.Client.Differences;
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namespace VirtualNes.Core
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{
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public class Mapper229 : Mapper
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{
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public Mapper229(NES parent) : base(parent)
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{
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}
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public override void Read(ushort addr, byte data)
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{
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SetPROM_32K_Bank(0);
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SetVROM_8K_Bank(0);
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}
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//void Mapper229::Write(WORD addr, BYTE data)
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public override void Write(ushort addr, byte data)
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{
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if ((addr & 0x001E) != 0)
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{
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BYTE prg = (byte)(addr & 0x001F);
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SetPROM_8K_Bank(4, prg * 2 + 0);
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SetPROM_8K_Bank(5, prg * 2 + 1);
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SetPROM_8K_Bank(6, prg * 2 + 0);
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SetPROM_8K_Bank(7, prg * 2 + 1);
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SetVROM_8K_Bank(addr & 0x0FFF);
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}
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else
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{
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SetPROM_32K_Bank(0);
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SetVROM_8K_Bank(0);
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}
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if ((addr & 0x0020) != 0)
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{
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SetVRAM_Mirror(VRAM_HMIRROR);
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}
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else
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{
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SetVRAM_Mirror(VRAM_VMIRROR);
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}
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}
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}
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}
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