61 lines
1.1 KiB
C#
61 lines
1.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace BizHawk.Emulation.Cores.Nintendo.NES
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{
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public class FS304 : NES.NESBoardBase
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{
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// waixing?
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int prg;
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int prg_mask_32k;
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public override bool Configure(NES.EDetectionOrigin origin)
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{
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switch (Cart.board_type)
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{
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case "UNIF_UNL-FS304":
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AssertChr(0);
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AssertPrg(512, 1024, 2048, 4096);
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Cart.vram_size = 8;
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Cart.wram_size = 8;
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Cart.wram_battery = true;
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break;
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default:
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return false;
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}
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prg_mask_32k = Cart.prg_size / 32 - 1;
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SetMirrorType(Cart.pad_h, Cart.pad_v);
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return true;
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}
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public override void WriteEXP(int addr, byte value)
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{
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switch (addr & 0x1300)
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{
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case 0x1000:
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prg &= ~0x0e;
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prg |= value & 0x0e;
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break;
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case 0x1100:
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prg &= ~0x01;
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prg |= value >> 1 & 0x01;
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break;
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case 0x1200:
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prg &= ~0xf0;
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prg |= value << 4 & 0xf0;
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break;
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}
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prg &= prg_mask_32k;
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}
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public override byte ReadPRG(int addr)
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{
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return ROM[addr | prg << 15];
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}
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}
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}
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