公开(公告)号：DE2459833A1

公开(公告)日：1976-06-24

申请号：DE2459833

申请日：1974-12-18

Applicant: IBM DEUTSCHLAND

Inventor： HELKE HERMANN DIPL ING ,  WOLLSCHLAEGER DIETER ,  KROGH CHRISTOPH V DIPL ING ,  GENG HELLMUTH

IPC: G06F9/24 ,  G06F12/02 ,  G06F12/08 ,  G06F12/14 ,  G06F9/10 ,  G06F13/06

Abstract: A controlled memory access system with a working store and control programme is suited to micro-programmed data processing systems. The main dynamic store consists of an addressable section with input-output controlled by a general machine control programme. A cyclic memory section is loaded by the system user and is not addressable. Data transfer to and from the cyclic memory is under the control of a I/O programme coupled to read and write magnetic disc stores. A general control programme store communicates with the cyclic memory and can generate jump instructions. The system provides flexibility of operation of various sub-routines with different characteristics and programme systems.