CONTROL SYSTEM OF PERIPHERAL SUB-SYSTEM

摘要: PURPOSE:To prevent the access competition for a sharing memory and to improve processing capacity of system by executing exclusion control device data shared memory. CONSTITUTION:When an R/W is executed optional magnetic disk driving DKU 12 from braking DKC 1, first, higher order address (device number) 24 set through bus 20 register 22. Thus, comparator 25 compares collates output 22 at 2 side, sets result locking flag 26 '1' time dissidence. Continuously, 1 reads contents setting 21, in case '1', lower 23. storing addresses designated both systems are outputted 1.