61 lines
1.2 KiB
C#
61 lines
1.2 KiB
C#
using BizHawk.Common;
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namespace BizHawk.Emulation.Cores.Nintendo.NES
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{
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/*
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PCB Class: Unknown
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iNES Mapper 242
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PRG-ROM: 32KB
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PRG-RAM: None
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CHR-ROM: 16KB
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CHR-RAM: None
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Battery is not available
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mirroring - both
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*
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* Games:
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* Wai Xing Zhan Shi (Ch)
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*/
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public sealed class Mapper242 : NES.NESBoardBase
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{
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int prg;
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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 "MAPPER242":
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break;
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default:
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return false;
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}
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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 byte ReadPRG(int addr)
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{
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return ROM[addr + (prg * 0x8000)];
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}
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public override void WritePRG(int addr, byte value)
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{
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prg = (addr >> 3) & 15;
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//fceux had different logic here for the mirroring, but that didnt match with experiments on dragon quest 8 nor disch's docs
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//i changed it at the same time
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bool mirror = addr.Bit(1);
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if (mirror)
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SetMirrorType(NES.NESBoardBase.EMirrorType.Horizontal);
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else
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SetMirrorType(NES.NESBoardBase.EMirrorType.Vertical);
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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("prg", ref prg);
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}
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}
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}
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