59 lines
1.4 KiB
C#
59 lines
1.4 KiB
C#
using BizHawk.Common;
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namespace BizHawk.Emulation.Cores.Nintendo.NES
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{
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//AKA half of mapper 034 (the other half is AVE_NINA_001 which is entirely different..)
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public sealed class BxROM : NES.NESBoardBase
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{
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//configuration
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int prg_bank_mask_32k;
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//state
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int prg_bank_32k;
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public override void SyncState(Serializer ser)
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{
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base.SyncState(ser);
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ser.Sync("prg_bank_32k", ref prg_bank_32k);
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}
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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 "AVE-NINA-07": // wally bear and the gang
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// it's not the NINA_001 but something entirely different; actually a colordreams with VRAM
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// this actually works
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AssertPrg(128); AssertChr(0); AssertWram(0); AssertVram(8);
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break;
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case "IREM-BNROM": //Mashou (J).nes
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case "NES-BNROM": //Deadly Towers (U)
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AssertPrg(128); AssertChr(0); AssertWram(0); AssertVram(8);
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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_bank_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 byte ReadPRG(int addr)
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{
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addr |= (prg_bank_32k << 15);
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return ROM[addr];
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}
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public override void WritePRG(int addr, byte value)
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{
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value = HandleNormalPRGConflict(addr, value);
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prg_bank_32k = value & prg_bank_mask_32k;
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}
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}
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} |