68 lines
1.6 KiB
C#
68 lines
1.6 KiB
C#
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using System.IO;
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namespace MyNes.Core
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{
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[BoardInfo("Unknown", 60)]
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[HassIssues]
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internal class Mapper060 : Board
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{
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private int latch;
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private byte menu;
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internal override string Issues => MNInterfaceLanguage.IssueMapper60;
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internal override void HardReset()
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{
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base.HardReset();
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latch = 0;
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menu = 0;
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}
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internal override void SoftReset()
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{
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base.SoftReset();
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latch = 0;
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menu = (byte)((uint)(menu + 1) & 3u);
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Switch08KCHR(menu);
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Switch16KPRG(menu, PRGArea.Area8000);
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Switch16KPRG(menu, PRGArea.AreaC000);
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}
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internal override void WritePRG(ref ushort address, ref byte data)
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{
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latch = address & 0x100;
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Switch01KNMTFromMirroring(((address & 8) == 8) ? Mirroring.Horz : Mirroring.Vert);
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Switch16KPRG((address >> 4) & ~((~address >> 7) & 1), PRGArea.Area8000);
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Switch16KPRG((address >> 4) | ((~address >> 7) & 1), PRGArea.AreaC000);
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Switch08KCHR(address);
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}
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internal override void ReadPRG(ref ushort address, out byte data)
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{
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if (latch == 0)
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{
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base.ReadPRG(ref address, out data);
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}
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else
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{
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data = menu;
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}
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}
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internal override void WriteStateData(ref BinaryWriter stream)
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{
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base.WriteStateData(ref stream);
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stream.Write(latch);
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stream.Write(menu);
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}
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internal override void ReadStateData(ref BinaryReader stream)
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{
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base.ReadStateData(ref stream);
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latch = stream.ReadInt32();
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menu = stream.ReadByte();
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}
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}
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}
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