71 lines
1.4 KiB
C#
71 lines
1.4 KiB
C#
using System;
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using System.IO;
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using System.Diagnostics;
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namespace BizHawk.Emulation.Consoles.Nintendo
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{
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public class CPROM : NES.NESBoardBase
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{
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//generally mapper 13
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//state
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int chr;
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public override bool Configure(NES.EDetectionOrigin origin)
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{
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//configure
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switch (Cart.board_type)
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{
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case "MAPPER013":
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break;
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case "NES-CPROM": //videomation
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AssertPrg(32); AssertChr(0); AssertVram(16); AssertWram(0);
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break;
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default:
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return false;
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}
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//TODO - assert that mirror type is vertical?
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//set it in the cart?
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SetMirrorType(NES.NESBoardBase.EMirrorType.Vertical);
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return true;
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}
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public override void WritePRG(int addr, byte value)
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{
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value = HandleNormalPRGConflict(addr,value);
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chr = value&3;
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}
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public override byte ReadPPU(int addr)
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{
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if (addr < 0x1000)
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return VRAM[addr];
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else if(addr<0x2000)
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return VRAM[addr - 0x1000 + (chr << 12)];
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else return base.ReadPPU(addr);
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}
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public override void WritePPU(int addr, byte value)
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{
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if (addr < 0x1000)
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VRAM[addr] = value;
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else if (addr < 0x2000)
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VRAM[addr - 0x1000 + (chr << 12)] = value;
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else base.WritePPU(addr,value);
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}
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public override void SyncState(Serializer ser)
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{
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base.SyncState(ser);
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ser.Sync("chr",ref chr);
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}
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}
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} |