DEVICE FOR MICROPROGRAM CONTROL Russian patent published in 1995 - IPC

FIELD: computer engineering. SUBSTANCE: device has three flip-flops, four groups of AND gates, two registers, three counters, multiplexer, memory unit and internal control microprogram unit. Each code of input information is converted by device to sequence of output control codes. Device receives and processes multiple recursive requests using brackets. Control mode of device provides possibility to identify and store fault state of control. Analysis mode provides possibility to restore fault control state. Device exchanges information with upper level control unit and controls final control unit in asynchronous mode. Single memory unit is used for storing different types of information. EFFECT: increased reliability, storing device states during fault and returning to instructions that were fault processed for multiple recursive sequences of instructions. 6 dwg