public static void RRF(Data.Command com) { byte d = (byte)(com.GetLowByte() & 128); byte f = (byte)(com.GetLowByte() & 127); byte result = (byte)(Data.GetRegister(Data.AddressResolution(f)) >> 1); //Add carry bit if flag is set if (Data.GetRegisterBit(Data.Registers.STATUS, Data.Flags.Status.C)) { result += 128; } //Set carry flag for current calculation if ((Data.GetRegister(Data.AddressResolution(f)) & 1) == 1) { Data.SetRegisterBit(Data.Registers.STATUS, Data.Flags.Status.C, true); } else { Data.SetRegisterBit(Data.Registers.STATUS, Data.Flags.Status.C, false); } DirectionalWrite(d, f, result); }
public static void CLRF(Data.Command com) { byte f = (byte)(com.GetLowByte() & 127); Data.SetRegister(Data.AddressResolution(f), 0); Data.SetRegisterBit(Data.Registers.STATUS, Data.Flags.Status.Z, true); }
public static void BSF(Data.Command com) { int b1 = (com.GetHighByte() & 3) << 1; int b = b1 + (((com.GetLowByte() & 128) == 128) ? 1 : 0); byte f = (byte)(com.GetLowByte() & 127); Data.SetRegisterBit(Data.AddressResolution(f), b, true); }
public static void SWAPF(Data.Command com) { byte d = (byte)(com.GetLowByte() & 128); byte f = (byte)(com.GetLowByte() & 127); byte result = (byte)((Data.GetRegister(Data.AddressResolution(f)) & 0x0F) << 4 | (Data.GetRegister(Data.AddressResolution(f)) & 0xF0) >> 4);; DirectionalWrite(d, f, result); }
public static void SUBWF(Data.Command com) { byte d = (byte)(com.GetLowByte() & 128); byte f = (byte)(com.GetLowByte() & 127); byte result = BitwiseSubstract(Data.GetRegister(Data.AddressResolution(f)), Data.GetRegisterW()); DirectionalWrite(d, f, result); }
public static void ANDWF(Data.Command com) { byte d = (byte)(com.GetLowByte() & 128); byte f = (byte)(com.GetLowByte() & 127); byte result = (byte)(Data.GetRegisterW() & Data.GetRegister(Data.AddressResolution(f))); DirectionalWrite(d, f, result); }
public static void INCF(Data.Command com) { byte d = (byte)(com.GetLowByte() & 128); byte f = (byte)(com.GetLowByte() & 127); byte result = (byte)(Data.GetRegister(Data.AddressResolution(f)) + 1); CheckZFlag(result); DirectionalWrite(d, f, result); }
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))); } }
public static void BTFSS(Data.Command com) { int b1 = (com.GetHighByte() & 3) << 1; int b = b1 + (((com.GetLowByte() & 128) == 128) ? 1 : 0); byte f = (byte)(com.GetLowByte() & 127); if (Data.GetRegisterBit(Data.AddressResolution(f), b) == true) { Data.IncPC(); SkipCycle(); } }
/// <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 INCFSZ(Data.Command com) { byte d = (byte)(com.GetLowByte() & 128); byte f = (byte)(com.GetLowByte() & 127); byte result = (byte)(Data.GetRegister(Data.AddressResolution(f)) + 1); if (result == 0) { Data.IncPC(); SkipCycle(); } DirectionalWrite(d, f, result); }
public static void MOVWF(Data.Command com) { byte f = (byte)(com.GetLowByte() & 127); Data.SetRegister(Data.AddressResolution(f), Data.GetRegisterW()); }