187 lines
3.3 KiB
C#
187 lines
3.3 KiB
C#
//////////////////////////////////////////////////////////////////////////
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// Mapper095 Namcot 106M (Dragon Buster) //
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//////////////////////////////////////////////////////////////////////////
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using static VirtualNes.MMU;
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using static VirtualNes.Core.CPU;
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using INT = System.Int32;
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using BYTE = System.Byte;
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using System;
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using Codice.CM.Client.Differences;
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namespace VirtualNes.Core
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{
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public class Mapper095 : Mapper
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{
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BYTE reg;
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BYTE prg0, prg1;
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BYTE chr01, chr23, chr4, chr5, chr6, chr7;
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public Mapper095(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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reg = 0x00;
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prg0 = 0;
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prg1 = 1;
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SetBank_CPU();
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if (VROM_1K_SIZE != 0)
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{
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chr01 = 0;
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chr23 = 2;
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chr4 = 4;
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chr5 = 5;
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chr6 = 6;
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chr7 = 7;
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}
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else
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{
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chr01 = chr23 = chr4 = chr5 = chr6 = chr7 = 0;
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}
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SetBank_PPU();
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nes.SetRenderMethod(EnumRenderMethod.POST_RENDER);
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}
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//void Mapper095::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 & 0xE001)
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{
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case 0x8000:
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reg = data;
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SetBank_CPU();
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SetBank_PPU();
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break;
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case 0x8001:
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if (reg <= 0x05)
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{
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if ((data & 0x20) != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
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else SetVRAM_Mirror(VRAM_MIRROR4L);
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data &= 0x1F;
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}
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switch (reg & 0x07)
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{
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case 0x00:
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if (VROM_1K_SIZE != 0)
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{
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chr01 = (byte)(data & 0xFE);
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SetBank_PPU();
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}
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break;
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case 0x01:
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if (VROM_1K_SIZE != 0)
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{
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chr23 = (byte)(data & 0xFE);
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SetBank_PPU();
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}
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break;
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case 0x02:
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if (VROM_1K_SIZE != 0)
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{
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chr4 = data;
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SetBank_PPU();
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}
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break;
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case 0x03:
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if (VROM_1K_SIZE != 0)
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{
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chr5 = data;
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SetBank_PPU();
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}
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break;
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case 0x04:
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if (VROM_1K_SIZE != 0)
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{
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chr6 = data;
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SetBank_PPU();
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}
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break;
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case 0x05:
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if (VROM_1K_SIZE != 0)
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{
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chr7 = data;
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SetBank_PPU();
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}
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break;
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case 0x06:
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prg0 = data;
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SetBank_CPU();
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break;
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case 0x07:
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prg1 = data;
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SetBank_CPU();
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break;
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}
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break;
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}
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}
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void SetBank_CPU()
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{
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if ((reg & 0x40) != 0)
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{
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SetPROM_32K_Bank(PROM_8K_SIZE - 2, prg1, prg0, PROM_8K_SIZE - 1);
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}
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else
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{
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SetPROM_32K_Bank(prg0, prg1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);
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}
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}
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void SetBank_PPU()
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{
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if (VROM_1K_SIZE != 0)
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{
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if ((reg & 0x80) != 0)
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{
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SetVROM_8K_Bank(chr4, chr5, chr6, chr7,
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chr01, chr01 + 1, chr23, chr23 + 1);
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}
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else
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{
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SetVROM_8K_Bank(chr01, chr01 + 1, chr23, chr23 + 1,
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chr4, chr5, chr6, chr7);
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}
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}
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}
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//void Mapper095::SaveState(LPBYTE p)
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public override void SaveState(byte[] p)
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{
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p[0] = reg;
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p[1] = prg0;
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p[2] = prg1;
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p[3] = chr01;
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p[4] = chr23;
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p[5] = chr4;
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p[6] = chr5;
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p[7] = chr6;
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p[8] = chr7;
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}
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//void Mapper095::LoadState(LPBYTE p)
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public override void LoadState(byte[] p)
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{
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reg = p[0];
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prg0 = p[1];
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prg1 = p[2];
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chr01 = p[3];
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chr23 = p[4];
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chr4 = p[5];
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chr5 = p[6];
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chr6 = p[7];
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chr7 = p[8];
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}
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public override bool IsStateSave()
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{
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return true;
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}
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}
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}
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