forked from sin365/AxibugEmuOnline
120 lines
2.3 KiB
C#
120 lines
2.3 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper082 Taito C075 //
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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 Mapper082 : Mapper
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{
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BYTE reg;
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public Mapper082(NES parent) : base(parent)
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{
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}
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public override void Reset()
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{
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reg = 0;
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SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
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if (VROM_8K_SIZE!=0)
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{
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SetVROM_8K_Bank(0);
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}
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SetVRAM_Mirror(VRAM_VMIRROR);
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}
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//void Mapper082::WriteLow(WORD addr, BYTE data)
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public override void WriteLow(ushort addr, byte data)
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{
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switch (addr)
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{
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case 0x7EF0:
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if (reg!=0)
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{
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SetVROM_2K_Bank(4, data >> 1);
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}
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else
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{
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SetVROM_2K_Bank(0, data >> 1);
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}
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break;
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case 0x7EF1:
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if (reg!=0)
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{
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SetVROM_2K_Bank(6, data >> 1);
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}
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else
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{
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SetVROM_2K_Bank(2, data >> 1);
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}
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break;
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case 0x7EF2:
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if (reg!=0) SetVROM_1K_Bank(0, data);
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else SetVROM_1K_Bank(4, data);
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break;
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case 0x7EF3:
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if (reg!=0) SetVROM_1K_Bank(1, data);
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else SetVROM_1K_Bank(5, data);
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break;
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case 0x7EF4:
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if (reg!=0) SetVROM_1K_Bank(2, data);
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else SetVROM_1K_Bank(6, data);
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break;
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case 0x7EF5:
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if (reg!=0) SetVROM_1K_Bank(3, data);
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else SetVROM_1K_Bank(7, data);
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break;
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case 0x7EF6:
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reg = (byte)(data & 0x02);
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if ((data & 0x01)!=0) SetVRAM_Mirror(VRAM_VMIRROR);
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else SetVRAM_Mirror(VRAM_HMIRROR);
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break;
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case 0x7EFA:
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SetPROM_8K_Bank(4, data >> 2);
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break;
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case 0x7EFB:
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SetPROM_8K_Bank(5, data >> 2);
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break;
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case 0x7EFC:
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SetPROM_8K_Bank(6, data >> 2);
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break;
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default:
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base.WriteLow(addr, data);
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break;
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}
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}
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//void Mapper082::SaveState(LPBYTE p)
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public override void SaveState(byte[] p)
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{
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p[0] = reg;
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}
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//void Mapper082::LoadState(LPBYTE p)
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public override void LoadState(byte[] p)
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{
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reg = p[0];
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}
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public override bool IsStateSave()
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{
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return true;
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}
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}
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}
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