90 lines
2.8 KiB
C#
90 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using BizHawk.Emulation.Common;
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namespace BizHawk.Emulation.Cores.Nintendo.GBA
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{
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public partial class MGBAHawk
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{
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unsafe byte PeekWRAM(IntPtr xwram, long addr) { return ((byte*)xwram)[addr]; }
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unsafe void PokeWRAM(IntPtr xwram, long addr, byte value) { ((byte*)xwram)[addr] = value; }
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void WireMemoryDomainPointers()
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{
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var s = new LibmGBA.MemoryAreas();
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LibmGBA.BizGetMemoryAreas(_core, s);
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_iwram.Data = s.iwram;
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_ewram.Data = s.wram;
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_bios.Data = s.bios;
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_palram.Data = s.palram;
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_vram.Data = s.vram;
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_oam.Data = s.oam;
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_rom.Data = s.rom;
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_sram.Data = s.sram;
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_sram.SetSize(s.sram_size);
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// special combined ram memory domain
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_cwram.Peek =
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delegate (long addr)
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{
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if (addr < 0 || addr >= (256 + 32) * 1024)
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throw new IndexOutOfRangeException();
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if (addr >= 256 * 1024)
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return PeekWRAM(s.iwram, addr & 32767);
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else
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return PeekWRAM(s.wram, addr);
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};
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_cwram.Poke =
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delegate (long addr, byte val)
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{
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if (addr < 0 || addr >= (256 + 32) * 1024)
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throw new IndexOutOfRangeException();
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if (addr >= 256 * 1024)
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PokeWRAM(s.iwram, addr & 32767, val);
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else
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PokeWRAM(s.wram, addr, val);
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};
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_gpumem = new GBAGPUMemoryAreas
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{
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mmio = s.mmio,
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oam = s.oam,
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palram = s.palram,
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vram = s.vram
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};
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}
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private MemoryDomainIntPtr _iwram;
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private MemoryDomainIntPtr _ewram;
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private MemoryDomainIntPtr _bios;
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private MemoryDomainIntPtr _palram;
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private MemoryDomainIntPtr _vram;
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private MemoryDomainIntPtr _oam;
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private MemoryDomainIntPtr _rom;
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private MemoryDomainIntPtr _sram;
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private MemoryDomainDelegate _cwram;
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private void CreateMemoryDomains(int romsize)
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{
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var LE = MemoryDomain.Endian.Little;
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var mm = new List<MemoryDomain>();
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mm.Add(_iwram = new MemoryDomainIntPtr("IWRAM", LE, IntPtr.Zero, 32 * 1024, true, 4));
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mm.Add(_ewram = new MemoryDomainIntPtr("EWRAM", LE, IntPtr.Zero, 256 * 1024, true, 4));
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mm.Add(_bios = new MemoryDomainIntPtr("BIOS", LE, IntPtr.Zero, 16 * 1024, false, 4));
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mm.Add(_palram = new MemoryDomainIntPtr("PALRAM", LE, IntPtr.Zero, 1024, true, 4));
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mm.Add(_vram = new MemoryDomainIntPtr("VRAM", LE, IntPtr.Zero, 96 * 1024, true, 4));
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mm.Add(_oam = new MemoryDomainIntPtr("OAM", LE, IntPtr.Zero, 1024, true, 4));
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mm.Add(_rom = new MemoryDomainIntPtr("ROM", LE, IntPtr.Zero, romsize, false, 4));
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mm.Add(_sram = new MemoryDomainIntPtr("SRAM", LE, IntPtr.Zero, 0, true, 4)); //size will be fixed in wireup
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mm.Add(_cwram = new MemoryDomainDelegate("Combined WRAM", (256 + 32) * 1024, LE, null, null, 4));
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MemoryDomains = new MemoryDomainList(mm);
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WireMemoryDomainPointers();
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}
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}
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}
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