private ResultInfo InvokeCommand()
{
switch (_command)
{
case 0b_0000_0000_0000_1000:
return(_literalControlOperations.RETURN()); //Return from Subroutine
case 0b_0000_0000_0000_1001:
return(_literalControlOperations.RETFIE()); //return from interrupt
case 0b_0000_0000_0110_0011:
return(_literalControlOperations.SLEEP()); //Go to standby mode
case 0b_0000_0000_0110_0100:
return(_literalControlOperations.CLRWDT()); //clear watchdog timer
case 0b_0000_0000_0000_0000: // ab hier nop
case 0b_0000_0000_0010_0000:
case 0b_0000_0000_0100_0000:
case 0b_0000_0000_0110_0000:
return(_byteOperations.NOP()); //no operation
case short n when(n >= 0b_0000_0001_0000_0000 && n <= 0b_0000_0001_0111_1111):
return(_byteOperations.CLRW()); //clear w
default:
return(AnalyzeNibble3());
}
}
public void RETURN()
{
_mem.Object.PCStack.Push(0x_0f);
ResultInfo op_result = _opService.RETURN();
Assert.AreEqual(2, op_result.Cycles);
Assert.AreEqual(0x_0f, op_result.OperationResults[0].Value);
Assert.AreEqual(MemoryConstants.PCL_B1, op_result.OperationResults[0].Address);
}