38 lines
1.0 KiB
C#
38 lines
1.0 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper089 SunSoft (水戸黄門) //
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//////////////////////////////////////////////////////////////////////////
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using static VirtualNes.MMU;
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namespace VirtualNes.Core
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{
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public class Mapper089 : Mapper
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{
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public Mapper089(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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SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
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SetVROM_8K_Bank(0);
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}
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//void Mapper089::Write(WORD addr, BYTE data)
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public override void Write(ushort addr, byte data)
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{
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if ((addr & 0xFF00) == 0xC000)
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{
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SetPROM_16K_Bank(4, (data & 0x70) >> 4);
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SetVROM_8K_Bank(((data & 0x80) >> 4) | (data & 0x07));
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if ((data & 0x08) != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
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else SetVRAM_Mirror(VRAM_MIRROR4L);
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}
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}
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}
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}
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