MICROPROGRAM CONTROL DEVICE Russian patent published in 1997 - IPC

FIELD: computer engineering, in particular, design of intelligent controllers and automatic control systems. SUBSTANCE: device has address code generator 1, which runs address selection in microprogram memory unit 3, controlled timer 2 which tunes request frequency of memory unit 3 together with commutator 5, AND gate 6, D flip-flop 7 and gate 10. In addition device has register 12, matching unit 13 and final-control units 14-1, ..., 14-n. Computer 15, which outputs are connected to corresponding inputs of device loads new data in memory unit 3 and checks validity of their storage. Instructions are output from memory unit 3 in groups of two bytes, first of which is stored in register 12 and second one is sent to matching unit 13 directly from internal data bus D-in, which is disconnected from computer during device operations by means of gates unit 4. When microprogram is finished, D flip-flop 8 sends signal to computer. Device provides on-line control of microprograms which control final-control units 14- 1, ..., 14-n by alternation of content of memory unit 3 and by subsequent testing validity of stored data as well as by tuning timer 2. EFFECT: increased functional capabilities. 2 cl, 4 dwg , 1 tbl