Starting from the hardware configuration of the computer

a variety of hierarchies of control information at the microprogramming level is considered

the formal definition of microoperations is developed

and the microinstructions are organized based on the physical parallelism between microoperations. Such microinstructions are complete and full to describe the computer inherent parallelism. Therefore

they can be used as microprogram computing resources by microprogramers and are integrated. Two types of parallelism

physical and logical

are distinguished. The identification of the physical parallelism and the detection of resource conflicts not at the microprogram level but at the microinstruction level are useful to increase the flexibility in microprogramming and the efficiency of microprograms

and to realize the project of high level microprogramming languages.