Scroll Editing: An On-Line Algorithm for Manipulating Long Character Strings
IEEE Transactions on Computers
Generalized multiprocessing and multiprogramming systems
AFIPS '63 (Fall) Proceedings of the November 12-14, 1963, fall joint computer conference
AFIPS '63 (Fall) Proceedings of the November 12-14, 1963, fall joint computer conference
Programming systems and languages: a historical survey
AFIPS '64 (Spring) Proceedings of the April 21-23, 1964, spring joint computer conference
AFIPS '66 (Fall) Proceedings of the November 7-10, 1966, fall joint computer conference
File handling at Cambridge University
AFIPS '67 (Spring) Proceedings of the April 18-20, 1967, spring joint computer conference
Development of executive routines, both hardware and software
AFIPS '67 (Fall) Proceedings of the November 14-16, 1967, fall joint computer conference
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This paper gives a brief description of work originating in the Computer Group at Manchester University. Atlas is the name given to a large computing system which can include a variety of peripheral equipments, and an extensive store. All the activities of the system are controlled by a program called the supervisor. Several types of store are used, and the addressing system enables a virtually unlimited amount of each to be included. The primary store consists of magnetic cores with a cycle time of under two microseconds, which is effectively reduced by multiple selection mechanisms. The core store is divided into 512 word "pages"; this is also the size of the fixed blocks on drums and magnetic tapes. The core store and drum store are addressed identically, and drum transfers are performed automatically as described in Section 3. There is a fixed store which consists of a wire mesh into which ferrite slugs are inserted; it has a fast read-out time, and is used to hold common routines including routines of the supervisor. A subsidiary core store is used as working space for the supervisor. The V-store is a collective name given to various flip-flops throughout the computer, which can be read, set, and re-set by reading from or writing to particular store addresses.