public MemoryMap(IoAddresses ioAddresses)
{
this.IoAddresses = ioAddresses;
// TODO: Fix this.
this.IoAddresses.Parent = this;
this.mbc_ = new MemoryBankController(this.romBank0_, this.romBankX_);
var f = IMemorySourceFactory.INSTANCE;
this.Vram = f.NewArray(0x2000);
var ram = f.NewArray(0xfe00 - 0xe000);
this.Oam = f.NewArray(0xa0);
this.impl_ = f.BuildMapper(0xffff + 1)
.Register(0x0000, this.romBank0_)
.Register(0x4000, this.romBankX_)
.Register(0x8000, this.Vram)
.Register(0xc000, ram)
.Register(0xe000, ram)
.Register(0xfe00, this.Oam)
.Register(0xff00, this.IoAddresses)
.Build();
Asserts.Equal(10, this.impl_.SourceCount);
this.Reset();
}
/// <summary>
/// Initializes the native code page.
///
/// Safe to call if we already initialized (this function is idempotent).
/// <see cref="NativeCodePage"/>
/// </summary>
internal static void InitializeNativeCodePage()
{
// Do nothing if we already initialized.
if (NativeCodePage != IntPtr.Zero)
{
return;
}
// Allocate the page, write the native code into it, then set it
// to be executable.
IMemoryMapper mapper = CreateMemoryMapper();
int codeLength = NativeCode.Active.Code.Length;
NativeCodePage = mapper.MapWriteable(codeLength);
Marshal.Copy(NativeCode.Active.Code, 0, NativeCodePage, codeLength);
mapper.SetReadExec(NativeCodePage, codeLength);
}
public IoAddresses(ISerialBus serialBus)
{
this.SerialBus = serialBus;
/*case 0x44:
* this.data_[relativeAddress] = 0;
* return;*/
var f = IMemorySourceFactory.INSTANCE;
this.Div = f.BuildValue()
.OnSet((value, direct) => {
if (!direct)
{
this.DivCounter = 0;
return(0);
}
return(value);
})
.Build();
this.Tima = f.NewValue();
this.Tma = f.NewValue();
this.Tac = f.BuildValue()
.OnSet((value, direct) => {
if (!direct)
{
this.TimerCounter = 0;
return((byte)(value | 0xf8));
}
return(value);
})
.Build();
this.ScrollY = f.NewValue();
this.ScrollX = f.NewValue();
this.Bgp = f.NewValue();
this.Obp0 = f.NewValue();
this.Obp1 = f.NewValue();
this.Wy = f.NewValue();
this.Wx = f.NewValue();
this.Ie = f.NewValue();
this.impl_ = f.BuildMapper(0x100)
.Register(0x00, this.Joypad)
.Register(
0x01,
f.BuildValue()
.OnSet(this.SerialBus.Bytes.OnNext)
.Build()
)
.Register(0x04, this.Div)
.Register(0x05, this.Tima)
.Register(0x06, this.Tma)
.Register(0x07, this.Tac)
.Register(0x0f, this.If)
.Register(0x40, this.Lcdc)
.Register(0x41, this.Stat)
.Register(0x42, this.ScrollY)
.Register(0x43, this.ScrollX)
.Register(0x44, this.Ly)
.Register(0x45, this.Lyc)
.Register(0x46,
f.BuildValue()
.OnSet(value => {
var address = (ushort)(value << 8);
this.LastDmaAddress = address;
var memory = this.Parent !;
var oam = memory.Oam;
var oamSize = oam.Size;
for (ushort i = 0; i < oamSize; ++i)
{
oam[i] = memory[(ushort)(address + i)];
}
})
.Build())
.Register(0x47, this.Bgp)
.Register(0x48, this.Obp0)
.Register(0x49, this.Obp1)
.Register(0x4a, this.Wy)
.Register(0x4b, this.Wx)
.Register(0xff, this.Ie)
.Build();
}
