public override PCInstruction Execute()
{
var pos = firstArg.GetValue(Chip);
if (pos > 2 || pos < 0)
{
return(PCInstruction.INCREMENT);
}
pos = 2 - pos;
var acc = Chip.ReadPort(Register.ACC);
var isNegative = acc < 0;
var accStr = Math.Abs(acc).ToString();
var newValue = (secondArg.GetValue(Chip) % 10).ToString();
accStr = accStr.PadLeft(3, '0');
acc = int.Parse(accStr.Remove(pos, 1).Insert(pos, newValue));
if (isNegative)
{
acc *= -1;
}
Chip.WritePort(Register.ACC, acc);
return(PCInstruction.INCREMENT);
}
public override PCInstruction Execute()
{
var acc = Chip.ReadPort(Register.ACC);
Chip.WritePort(Register.ACC, acc * arg.GetValue(Chip));
return(PCInstruction.INCREMENT);
}
public override PCInstruction Execute()
{
var val1 = firstArg.GetValue(Chip);
var val2 = secondArg.GetValue(Chip);
Chip.SetTestOutcome(val1 < val2 ? TestPrefix.POSITIVE : TestPrefix.NEGATIVE);
return(PCInstruction.INCREMENT);
}
public override PCInstruction Execute()
{
var pos = arg.GetValue(Chip);
var acc = Chip.ReadPort(Register.ACC);
if (pos < 3 || pos > -1)
{
Chip.WritePort(Register.ACC, (int)(acc / Math.Pow(10, pos) % 10));
}
return(PCInstruction.INCREMENT);
}
public override PCInstruction Execute()
{
var val1 = firstArg.GetValue(Chip);
var val2 = secondArg.GetValue(Chip);
if (val1 > val2)
{
Chip.SetTestOutcome(TestPrefix.POSITIVE);
}
else if (val1 < val2)
{
Chip.SetTestOutcome(TestPrefix.NEGATIVE);
}
else
{
Chip.SetTestOutcome(TestPrefix.NONE);
}
return(PCInstruction.INCREMENT);
}
public override PCInstruction Execute()
{
if (!_initialized)
{
_sleepTime = arg.GetValue(Chip);
_initialized = true;
}
if (_sleepTime > 0)
{
_sleepTime--;
Chip.IsSleeping = true;
return(PCInstruction.NOTHING);
}
Chip.IsSleeping = false;
_initialized = false;
return(PCInstruction.INCREMENT);
}
public override PCInstruction Execute()
{
if (cachedVal == -1000)
{
var val = src.GetValue(Chip);
if (val == -1000)
{
return(PCInstruction.NOTHING);
}
cachedVal = val;
}
var writeResponse = Chip.WritePort(dst.Register, cachedVal);
if (writeResponse == WritePortResponse.WAITING || writeResponse == WritePortResponse.REGISTERED)
{
return(PCInstruction.NOTHING);
}
cachedVal = -1000;
return(PCInstruction.INCREMENT);
}
