67 lines
1.9 KiB
C#
67 lines
1.9 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper222 //
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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 Mapper222 : Mapper
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{
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public Mapper222(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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if (VROM_1K_SIZE != 0)
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{
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SetVROM_8K_Bank(0);
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}
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SetVRAM_Mirror(VRAM_VMIRROR);
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}
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//void Mapper222::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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switch (addr & 0xF003)
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{
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case 0x8000:
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SetPROM_8K_Bank(4, data);
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break;
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case 0xA000:
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SetPROM_8K_Bank(5, data);
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break;
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case 0xB000:
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SetVROM_1K_Bank(0, data);
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break;
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case 0xB002:
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SetVROM_1K_Bank(1, data);
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break;
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case 0xC000:
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SetVROM_1K_Bank(2, data);
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break;
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case 0xC002:
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SetVROM_1K_Bank(3, data);
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break;
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case 0xD000:
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SetVROM_1K_Bank(4, data);
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break;
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case 0xD002:
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SetVROM_1K_Bank(5, data);
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break;
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case 0xE000:
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SetVROM_1K_Bank(6, data);
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break;
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case 0xE002:
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SetVROM_1K_Bank(7, data);
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break;
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}
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}
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}
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}
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