| 摘要 |
PURPOSE:To load a microprogram into an internal storage area in unit of page as well s in a software program, by a microprogram control system and a paging system which use the main storage device of a control storage device in common. CONSTITUTION:An internal storage unit 10 has page constitution and a microprogram and software program are loaded into page areas respectively for control storage and main storage. A central controller 100, on the other hand, includes a logical operation device, a circuit 110 including a register group, and an associative memory 120, which has logical and actual page address parts 125 and 126 and a flag part 127, for discriminating the said pages; and the memory 120, when accessed by a logical page address, generates and sends an actual page address and a page discrimination signal to a route switch 30 through a line 122, and the switch 30 discriminates information in the page is whether read out of the microprogram or softwave program and applies it to a control circuit 40 or data bus 70 correspondingly. |
