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snes-memorydomains (but not systembus)

This commit is contained in:
zeromus 2012-09-04 17:29:20 +00:00
parent dd6d0a47e1
commit c8aa937f4f
1 changed files with 63 additions and 13 deletions
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76
BizHawk.Emulation/Consoles/Nintendo/SNES/LibsnesCore.cs
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@ -68,7 +68,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
public static extern SNES_REGION snes_get_region();
[DllImport("snes.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern uint snes_get_memory_size(SNES_MEMORY id);
public static extern int snes_get_memory_size(SNES_MEMORY id);
[DllImport("snes.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr snes_get_memory_data(SNES_MEMORY id);
@ -154,15 +154,6 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
public LibsnesCore(byte[] romData)
{
//strip header
if ((romData.Length & 0x7FFF) == 512)
{
var newData = new byte[romData.Length - 512];
Array.Copy(romData, 512, newData, 0, newData.Length);
romData = newData;
}
LibsnesDll.snes_load_cartridge_normal(null, romData, romData.Length);
var vidcb = new LibsnesDll.snes_video_refresh_t(snes_video_refresh);
_gc_snes_video_refresh = GCHandle.Alloc(vidcb);
BizHawk.Emulation.Consoles.Nintendo.SNES.LibsnesDll.snes_set_video_refresh(vidcb);
@ -179,7 +170,16 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
_gc_snes_audio_sample = GCHandle.Alloc(soundcb);
BizHawk.Emulation.Consoles.Nintendo.SNES.LibsnesDll.snes_set_audio_sample(soundcb);
LibsnesDll.snes_power();
//strip header
if ((romData.Length & 0x7FFF) == 512)
{
var newData = new byte[romData.Length - 512];
Array.Copy(romData, 512, newData, 0, newData.Length);
romData = newData;
}
LibsnesDll.snes_load_cartridge_normal(null, romData, romData.Length);
SetupMemoryDomains(romData);
}
GCHandle _gc_snes_input_state;
@ -359,8 +359,58 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
CoreOutputComm CoreOutputComm = new CoreOutputComm();
// ----- Client Debugging API stuff -----
public IList<MemoryDomain> MemoryDomains { get { return new List<MemoryDomain>(); } }
public MemoryDomain MainMemory { get { return new MemoryDomain(); } }
unsafe MemoryDomain MakeMemoryDomain(string name, LibsnesDll.SNES_MEMORY id, Endian endian)
{
IntPtr block = LibsnesDll.snes_get_memory_data(LibsnesDll.SNES_MEMORY.WRAM);
int size = LibsnesDll.snes_get_memory_size(id);
int mask = size - 1;
byte* blockptr = (byte*)block.ToPointer();
MemoryDomain md;
//have to bitmask these somehow because it's unmanaged memory and we would hate to clobber things or make them nondeterministic
if (Util.IsPowerOfTwo(size))
{
//can &mask for speed
md = new MemoryDomain(name, size, endian,
(addr) => blockptr[addr & mask],
(addr, value) => blockptr[addr & mask] = value);
}
else
{
//have to use % (only OAM needs this, it seems)
md = new MemoryDomain(name, size, endian,
(addr) => blockptr[addr % size],
(addr, value) => blockptr[addr % size] = value);
}
MemoryDomains.Add(md);
return md;
//doesnt cache the addresses. safer. slower. necessary? don't know
//return new MemoryDomain(name, size, endian,
// (addr) => Peek(LibsnesDll.SNES_MEMORY.WRAM, addr & mask),
// (addr, value) => Poke(LibsnesDll.SNES_MEMORY.WRAM, addr & mask, value));
}
void SetupMemoryDomains(byte[] romData)
{
MemoryDomains = new List<MemoryDomain>();
var romDomain = new MemoryDomain("ROM", romData.Length, Endian.Little,
(addr) => romData[addr],
(addr, value) => romData[addr] = value);
MainMemory = MakeMemoryDomain("WRAM", LibsnesDll.SNES_MEMORY.WRAM, Endian.Little);
MemoryDomains.Add(romDomain);
MakeMemoryDomain("CARTRAM", LibsnesDll.SNES_MEMORY.CARTRIDGE_RAM, Endian.Little);
MakeMemoryDomain("VRAM", LibsnesDll.SNES_MEMORY.VRAM, Endian.Little);
MakeMemoryDomain("OAM", LibsnesDll.SNES_MEMORY.OAM, Endian.Little);
MakeMemoryDomain("CGRAM", LibsnesDll.SNES_MEMORY.CGRAM, Endian.Little);
MakeMemoryDomain("APURAM", LibsnesDll.SNES_MEMORY.APURAM, Endian.Little);
}
public IList<MemoryDomain> MemoryDomains { get; private set; }
public MemoryDomain MainMemory { get; private set; }
Queue<short> AudioBuffer = new Queue<short>();