public override void Out(uint port, ushort value)
{
if (port == ((uint)(0x3B8)))
{
if ((value & 2) == 2 && mVideoMode != (int)VideoModes.Mode7_Text_BW_80x25)
{
VideoMode = (uint)VideoModes.Mode7_Text_BW_80x25;
}
} // CRT (6845) index register
else if (((((((port == ((uint)(0x3D0))) || (port == ((uint)(0x3D2)))) || (port == ((uint)(0x3D4)))) || (port == ((uint)(0x3D6)))) || (port == +0x3B0)) || (port == ((uint)(0x3B2)))) || (port == ((uint)(0x3B4))))
{
CRT6845IndexRegister = (byte)(value & 31);
} // CRT (6845) data register
else if (((((((port == ((uint)(0x3D1))) || (port == ((uint)(0x3D3)))) || (port == ((uint)(0x3D5)))) || (port == ((uint)(0x3D7)))) || (port == +0x3B1)) || (port == ((uint)(0x3B3)))) || (port == ((uint)(0x3B5))))
{
CRT6845DataRegister[CRT6845IndexRegister] = (byte)(value & CtrlMask[CRT6845IndexRegister]);
OnDataRegisterChanged();
} // CGA mode control register (except PCjr)
else if ((port == ((uint)(0x3D8))) || (port == ((uint)(0x3B8))))
{
X8086.WordToBitsArray(value, CGAModeControlRegister);
OnModeControlRegisterChanged();
} // CGA palette register
else if ((port == ((uint)(0x3D9))) || (port == ((uint)(0x3B9))))
{
X8086.WordToBitsArray(value, CGAPaletteRegister);
OnPaletteRegisterChanged();
} // CGA status register EGA/VGA: input status 1 register / EGA/VGA feature control register
else if ((port == ((uint)(0x3DA))) || (port == ((uint)(0x3BA))))
{
X8086.WordToBitsArray(value, CGAStatusRegister);
} // The trigger is cleared by writing any value to port 03DBh (undocumented)
else if (port == ((uint)(0x3DB)))
{
CGAStatusRegister[(int)CGAStatusRegisters.light_pen_trigger_set] = false;
} // CRT/CPU page register (PCjr only)
else if (port == ((uint)(0x3DF)))
{
//Stop
}
else
{
base.CPU.RaiseException("CGA: Unknown Out Port: " + port.ToString("X4"));
}
}
public override void Reset()
{
X8086.WordToBitsArray((ushort)(0x29), CGAModeControlRegister);
X8086.WordToBitsArray((ushort)(0x0), CGAColorControlRegister);
CRT6845DataRegister[0] = (byte)(0x71);
CRT6845DataRegister[1] = (byte)(0x50);
CRT6845DataRegister[2] = (byte)(0x5A);
CRT6845DataRegister[3] = (byte)(0xA);
CRT6845DataRegister[4] = (byte)(0x1F);
CRT6845DataRegister[5] = (byte)(0x6);
CRT6845DataRegister[6] = (byte)(0x19);
CRT6845DataRegister[7] = (byte)(0x1C);
CRT6845DataRegister[8] = (byte)(0x2);
CRT6845DataRegister[9] = (byte)(0x7);
CRT6845DataRegister[10] = (byte)(0x6);
CRT6845DataRegister[11] = (byte)(0x71);
for (int i = 12; i <= 32 - 1; i++)
{
CRT6845DataRegister[i] = (byte)0;
}
//HandleCGAModeControlRegisterUpdated()
InitVideoMemory(false);
}