41 lines
1.0 KiB
C#
41 lines
1.0 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper201 21-in-1 //
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//////////////////////////////////////////////////////////////////////////
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using static VirtualNes.MMU;
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using BYTE = System.Byte;
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namespace VirtualNes.Core
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{
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public class Mapper201 : Mapper
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{
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public Mapper201(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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SetPROM_16K_Bank(4, 0);
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SetPROM_16K_Bank(6, 0);
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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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}
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//void Mapper201::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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BYTE bank = (byte)((BYTE)addr & 0x03);
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if (!((addr & 0x08) != 0))
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bank = 0;
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SetPROM_32K_Bank(bank);
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SetVROM_8K_Bank(bank);
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}
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}
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}
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