public static void SUBLW(Data.Command com)
{
byte k = com.GetLowByte();
byte result = BitwiseSubstract(k, Data.GetRegisterW());
Data.SetRegisterW(result);
}
public static void ADDLW(Data.Command com)
{
byte k = com.GetLowByte();
byte result = BitwiseAdd(Data.GetRegisterW(), k);
Data.SetRegisterW(result);
}
public static void XORLW(Data.Command com)
{
byte k = com.GetLowByte();
byte result = (byte)(Data.GetRegisterW() ^ k);
CheckZFlag(result);
Data.SetRegisterW(result);
}
public static void RETLW(Data.Command com)
{
byte k = com.GetLowByte();
Data.SetRegisterW(k);
Data.SetPC(Data.PopStack());
Data.SetPCLfromPC();
SkipCycle();
}
public static void MOVF(Data.Command com)
{
byte d = (byte)(com.GetLowByte() & 128);
byte f = (byte)(com.GetLowByte() & 127);
CheckZFlag(Data.GetRegister(Data.AddressResolution(f)));
if (d != 128)
{
Data.SetRegisterW(Data.GetRegister(Data.AddressResolution(f)));
}
}
/// <summary>
/// Write result according to d bit (relative address)
/// </summary>
/// <param name="d"></param>
/// <param name="f"></param>
/// <param name="result"></param>
private static void DirectionalWrite(byte d, byte f, byte result)
{
//save to w register
if (d == 0)
{
Data.SetRegisterW(result);
}
//save to f address
else if (d == 128)
{
Data.SetRegister(Data.AddressResolution(f), result);
}
}
public static void CLRW(Data.Command com)
{
Data.SetRegisterW(0);
Data.SetRegisterBit(Data.Registers.STATUS, Data.Flags.Status.Z, true);
}
public static void MOVLW(Data.Command com)
{
byte k = com.GetLowByte();
Data.SetRegisterW(k);
}