A processor comprises checking and control devices, first register, and register bank. The control device checks a condition or a subcondition of the condition within a first time unit based on a first subcondition checked within a second time unit preceding the first time unit, a second subcondition checked within a third time unit preceding the second time unit, and a single condition. The first register is coupled to the control device for storing the checked condition and the output of the first register is coupled to the control device for providing the stored, checked subcondition as a checked, first subcondition. The input of the register bank is coupled to the first register for receiving the stored, checked subcondition, the second register stores the received, checked subcondition as the checked, second subcondition, and the register bank is coupled to the control device for providing the checked, second subcondition.