97 lines
2.5 KiB
C#
97 lines
2.5 KiB
C#
using System;
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namespace BizHawk.Emulation.Cores.Nintendo.NES
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{
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[NES.INESBoardImplPriority]
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public sealed class NROM : NES.NESBoardBase
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{
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//configuration
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int prg_byte_mask;
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//state
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//(none)
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public override bool Configure(NES.EDetectionOrigin origin)
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{
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//configure.
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//contrary to expectations, some NROM games may have WRAM if theyve been identified through iNES. lame.
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switch (Cart.board_type)
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{
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case "MAPPER000":
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break;
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case "MAPPER000_VS":
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// I thibnk this is only for bad/pirated dumps of VS games.
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// No VS game used mapper zero but some were changed to use noraml CHR mapping I think
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NES._isVS = true;
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break;
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case "BANDAI-NROM-128":
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case "BANDAI-NROM-256":
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case "HVC-HROM": //Donkey Kong Jr. (J)
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case "HVC-NROM-128":
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case "HVC-NROM-256": //super mario bros.
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case "HVC-RROM": //balloon fight
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case "HVC-RTROM":
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case "HVC-SROM":
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case "HVC-STROM":
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case "IREM-NROM-128":
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case "IREM-NROM-256":
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case "JALECO-JF-01": //Exerion (J)
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case "JALECO-JF-02":
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case "JALECO-JF-03":
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case "JALECO-JF-04":
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case "KONAMI-NROM-128":
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case "NAMCOT-3301":
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case "NAMCOT-3302":
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case "NAMCOT-3303":
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case "NAMCOT-3304":
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case "NAMCOT-3305":
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case "NAMCOT-3311":
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case "NAMCOT-3312":
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case "NAMCOT-NROM-128":
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case "NES-NROM-128":
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case "NES-NROM-256": //10 yard fight
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case "NES-RROM-128":
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case "SACHEN-NROM":
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case "SETA-NROM-128":
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case "SUNSOFT-NROM-128":
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case "SUNSOFT-NROM-256":
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case "TAITO-NROM-128":
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case "TAITO-NROM-256":
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case "TENGEN-800003": // ms pac man, others
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case "UNIF_NES-NROM-128": // various
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case "UNIF_NES-NROM-256": // Locksmith
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AssertPrg(8, 16, 32);
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AssertChr(8); AssertVram(0); AssertWram(0, 8);
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break;
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case "AVE-NINA-03":
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// at least one game on this board has none of the mapper chips present,
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// and emulates as simple NROM
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if (Cart.chips.Count != 0)
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return false;
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AssertPrg(8, 16, 32);
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AssertChr(8); AssertVram(0); AssertWram(0);
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break;
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case "HVC-FAMILYBASIC":
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// we don't emulate the controller, so this won't work
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AssertPrg(32); AssertChr(8); AssertWram(2, 4);
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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_byte_mask = (Cart.prg_size*1024) - 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 byte ReadPRG(int addr)
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{
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addr &= prg_byte_mask;
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return ROM[addr];
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}
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}
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}
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