71 lines
1.7 KiB
C#
71 lines
1.7 KiB
C#
using System.IO;
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namespace MyNes.Core
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{
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[BoardInfo("Asder", 112)]
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internal class Mapper112 : Board
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{
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private int address_A000;
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internal override void HardReset()
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{
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base.HardReset();
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Switch16KPRG(PRG_ROM_16KB_Mask, 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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switch (address & 0xE001)
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{
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case 32768:
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address_A000 = data & 7;
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break;
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case 40960:
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switch (address_A000)
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{
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case 0:
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Switch08KPRG(data, PRGArea.Area8000);
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break;
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case 1:
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Switch08KPRG(data, PRGArea.AreaA000);
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break;
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case 2:
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Switch02KCHR(data >> 1, CHRArea.Area0000);
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break;
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case 3:
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Switch02KCHR(data >> 1, CHRArea.Area0800);
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break;
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case 4:
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Switch01KCHR(data, CHRArea.Area1000);
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break;
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case 5:
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Switch01KCHR(data, CHRArea.Area1400);
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break;
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case 6:
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Switch01KCHR(data, CHRArea.Area1800);
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break;
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case 7:
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Switch01KCHR(data, CHRArea.Area1C00);
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break;
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}
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break;
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case 57344:
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Switch01KNMTFromMirroring(((data & 1) == 1) ? Mirroring.Horz : Mirroring.Vert);
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break;
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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(address_A000);
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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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address_A000 = stream.ReadInt32();
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}
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}
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}
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