private void loadFromStream(Stream stream)
{
byte[] array = new byte[30];
byte[] array2 = new byte[25];
stream.Read(array, 0, 30);
if (array[12] == 255)
{
array[12] = 1;
}
int num = 1;
if (FormatSerializer.getUInt16(array, 6) == 0)
{
num = 2;
stream.Read(array2, 0, 25);
if (array2[0] == 54)
{
num = 3;
byte[] buffer = new byte[31];
stream.Read(buffer, 0, 31);
}
else if (array2[0] != 23)
{
PlatformFactory.Platform.ShowWarning("Z80 format version not recognized!\n(ExtensionSize = " + array2[0].ToString() + ",\nsupported only ExtensionSize={0(old format), 23, 54})", "Z80 loader");
return;
}
}
this._spec.CPU.Tact += 1000UL;
this._spec.DoReset();
if (this._spec is IBetaDiskDevice)
{
((IBetaDiskDevice)this._spec).SEL_TRDOS = false;
}
this._spec.CPU.regs.A = array[0];
this._spec.CPU.regs.F = array[1];
this._spec.CPU.regs.HL = FormatSerializer.getUInt16(array, 4);
this._spec.CPU.regs.DE = FormatSerializer.getUInt16(array, 13);
this._spec.CPU.regs.BC = FormatSerializer.getUInt16(array, 2);
this._spec.CPU.regs._AF = (ushort)((int)array[21] * 256 + (int)array[22]);
this._spec.CPU.regs._HL = FormatSerializer.getUInt16(array, 19);
this._spec.CPU.regs._DE = FormatSerializer.getUInt16(array, 17);
this._spec.CPU.regs._BC = FormatSerializer.getUInt16(array, 15);
this._spec.CPU.regs.IX = FormatSerializer.getUInt16(array, 25);
this._spec.CPU.regs.IY = FormatSerializer.getUInt16(array, 23);
this._spec.CPU.regs.SP = FormatSerializer.getUInt16(array, 8);
this._spec.CPU.regs.I = array[10];
this._spec.CPU.regs.R = (byte)((array[11] | (((array[12] & 1) != 0) ? 128 : 0)));
if (num == 1)
{
this._spec.CPU.regs.PC = FormatSerializer.getUInt16(array, 6);
}
else
{
this._spec.CPU.regs.PC = FormatSerializer.getUInt16(array2, 2);
}
this._spec.CPU.IFF1 = (array[27] != 0);
this._spec.CPU.IFF2 = (array[28] != 0);
this._spec.CPU.IM = (byte)((array[29] & 3));
this._spec.CPU.HALTED = false;
if (this._spec is ISpectrum)
{
((ISpectrum)this._spec).PortFE = (byte)(array[12] >> 1 & 7);
}
if (num > 1)
{
if (array2[6] == 255)
{
PlatformFactory.Platform.ShowWarning("Interface I not implemented, but Interface I ROM required!", "Z80 loader");
}
IAyDevice ayDevice = this._spec as IAyDevice;
if (ayDevice != null)
{
for (int i = 0; i < 16; i++)
{
ayDevice.Sound.ADDR_REG = (byte)i;
ayDevice.Sound.DATA_REG = array2[9 + i];
}
}
}
bool flag = (array[12] & 32) != 0;
bool flag2 = false;
if (num == 2)
{
switch (array2[4])
{
case 0:
case 1:
goto IL_42F;
case 2:
PlatformFactory.Platform.ShowWarning("SamRam not implemented!", "Z80 loader");
goto IL_42F;
case 3:
case 4:
case 9:
case 10:
flag2 = true;
goto IL_42F;
}
PlatformFactory.Platform.ShowWarning("Unrecognized ZX Spectrum config (" + array2[4].ToString() + ")!", "Z80 loader");
}
IL_42F:
if (num == 3)
{
switch (array2[4])
{
case 0:
case 1:
case 2:
PlatformFactory.Platform.ShowWarning("SamRam not implemented!", "Z80 loader");
goto IL_4B2;
case 3:
goto IL_4B2;
case 4:
case 5:
case 6:
case 9:
case 10:
flag2 = true;
goto IL_4B2;
}
PlatformFactory.Platform.ShowWarning("Unrecognized ZX Spectrum config (" + array2[4].ToString() + ")!", "Z80 loader");
}
IL_4B2:
byte b;
if (num == 1)
{
b = 48;
}
else if (flag2)
{
b = array2[5];
}
else
{
b = 48;
}
if (this._spec is ISpectrum128K)
{
((ISpectrum128K)this._spec).Port7FFD = b;
}
if (num == 1)
{
int num2 = (int)(stream.Length - stream.Position);
if (num2 < 0)
{
num2 = 0;
}
byte[] array3 = new byte[num2 + 1024];
stream.Read(array3, 0, num2);
byte[] array4 = new byte[131071];
if (flag)
{
this.DecompressZ80(array4, array3, 49152);
}
else
{
for (int j = 0; j < 49152; j++)
{
array4[j] = array3[j];
}
}
int page = (int)(b & 7);
this._spec.SetRamImage(5, array4, 0, 16384);
this._spec.SetRamImage(2, array4, 16384, 16384);
this._spec.SetRamImage(page, array4, 32768, 16384);
return;
}
byte[] array5 = new byte[4];
byte[] array6 = new byte[129000];
byte[] array7 = new byte[16384];
while (stream.Position < stream.Length)
{
stream.Read(array5, 0, 2);
int @uint = (int)FormatSerializer.getUInt16(array5, 0);
stream.Read(array5, 0, 1);
int num3 = (int)array5[0];
stream.Read(array6, 0, @uint);
this.DecompressZ80(array7, array6, 16384);
if (num3 >= 3 && num3 <= 10 && flag2)
{
this._spec.SetRamImage(num3 - 3 & 7, array7, 0, 16384);
}
else if ((num3 == 4 || num3 == 5 || num3 == 8) && !flag2)
{
int page2 = (int)(b & 7);
if (num3 == 8)
{
page2 = 5;
}
if (num3 == 4)
{
page2 = 2;
}
this._spec.SetRamImage(page2, array7, 0, 16384);
}
else if (num3 == 0)
{
this._spec.SetRomImage(RomName.ROM_48, array7, 0, 16384);
PlatformFactory.Platform.ShowWarning("ROM 48K loaded from snapshot!", "Z80 loader");
}
else if (num3 == 2)
{
this._spec.SetRomImage(RomName.ROM_128, array7, 0, 16384);
PlatformFactory.Platform.ShowWarning("ROM 128K loaded from snapshot!", "Z80 loader");
}
}
}
private void saveToStream(Stream stream)
{
byte[] array = new byte[30];
byte[] array2 = new byte[25];
FormatSerializer.setUint16(array, 6, 0);
FormatSerializer.setUint16(array2, 0, 23);
array[0] = this._spec.CPU.regs.A;
array[1] = this._spec.CPU.regs.F;
FormatSerializer.setUint16(array, 4, this._spec.CPU.regs.HL);
FormatSerializer.setUint16(array, 13, this._spec.CPU.regs.DE);
FormatSerializer.setUint16(array, 2, this._spec.CPU.regs.BC);
array[21] = (byte)(this._spec.CPU.regs._AF >> 8);
array[22] = (byte)this._spec.CPU.regs._AF;
FormatSerializer.setUint16(array, 19, this._spec.CPU.regs._HL);
FormatSerializer.setUint16(array, 17, this._spec.CPU.regs._DE);
FormatSerializer.setUint16(array, 15, this._spec.CPU.regs._BC);
FormatSerializer.setUint16(array, 25, this._spec.CPU.regs.IX);
FormatSerializer.setUint16(array, 23, this._spec.CPU.regs.IY);
FormatSerializer.setUint16(array, 8, this._spec.CPU.regs.SP);
array[10] = this._spec.CPU.regs.I;
array[11] = (byte)((this._spec.CPU.regs.R & 127));
if ((this._spec.CPU.regs.R & 128) != 0)
{
byte[] array3 = array;
int num = 12;
array3[num] |= 1;
}
byte b = byte.MaxValue;
if (this._spec is ISpectrum)
{
b = ((ISpectrum)this._spec).PortFE;
}
array[12] = (byte)((b & 7) << 1);
byte[] array4 = array;
int num2 = 12;
array4[num2] |= 32;
FormatSerializer.setUint16(array2, 2, this._spec.CPU.regs.PC);
if (this._spec.CPU.IFF1)
{
array[27] = byte.MaxValue;
}
else
{
array[27] = 0;
}
if (this._spec.CPU.IFF2)
{
array[28] = byte.MaxValue;
}
else
{
array[28] = 0;
}
array[29] = this._spec.CPU.IM;
if (this._spec.CPU.IM > 2)
{
array[29] = 0;
}
byte b2 = 48;
if (this._spec is ISpectrum128K)
{
b2 = ((ISpectrum128K)this._spec).Port7FFD;
}
bool flag = (b2 & 48) != 48;
if (!flag)
{
FormatSerializer.setUint16(array, 6, this._spec.CPU.regs.PC);
}
array2[4] = 3;
array2[5] = b2;
array2[6] = 0;
array2[7] = 3;
array2[8] = 14;
IAyDevice ayDevice = this._spec as IAyDevice;
if (ayDevice != null)
{
byte addr_REG = ayDevice.Sound.ADDR_REG;
for (int i = 0; i < 16; i++)
{
ayDevice.Sound.ADDR_REG = (byte)i;
array2[9 + i] = ayDevice.Sound.DATA_REG;
}
ayDevice.Sound.ADDR_REG = addr_REG;
}
byte[] array5 = new byte[200000];
if (!flag)
{
byte[] array6 = new byte[65535];
this._spec.GetRamImage(5).CopyTo(array6, 0);
this._spec.GetRamImage(2).CopyTo(array6, 16384);
this._spec.GetRamImage((int)(b2 & 7)).CopyTo(array6, 32768);
int num3 = this.CompressZ80(array5, array6, 49152);
if (num3 + 4 >= 49152)
{
byte[] array7 = array;
int num4 = 12;
array7[num4] &= 223;
num3 = 49152;
for (int j = 0; j < num3; j++)
{
array5[j] = array6[j];
}
}
stream.Write(array, 0, 30);
stream.Write(array5, 0, num3);
if ((array[12] & 32) != 0)
{
byte[] array8 = new byte[4];
array8[1] = 237;
array8[2] = 237;
byte[] buffer = array8;
stream.Write(buffer, 0, 4);
return;
}
}
else
{
stream.Write(array, 0, 30);
stream.Write(array2, 0, 25);
for (int k = 0; k < 8; k++)
{
int num3 = this.CompressZ80(array5, this._spec.GetRamImage(k), 16384);
int value = (k & 7) + 3;
stream.Write(FormatSerializer.getBytes(num3), 0, 2);
stream.Write(FormatSerializer.getBytes(value), 0, 1);
stream.Write(array5, 0, num3);
}
}
}