/**
* @brief Reads the operand of the current instruction
* into ALU y.
*/
public IEnumerator ReadIROperandToALUy()
{
busSystem.StartTransferringData(BusControl.BUS_ROUTE.IR_ALUY);
yield return(new WaitForSeconds(clock.GetSpeed()));
ALU.WriteY(IR.OperandString());
busSystem.StopTransferringData(BusControl.BUS_ROUTE.IR_ALUY);
}