De E Tran

US Patent:

52788008, Jan 11, 1994

Filed:

Oct 31, 1991

Appl. No.:

7/786139

Inventors:

Warren W. Grunbok - Poughkeepsie NY
Billy J. Knowles - Kingston NY
William R. Milani - Woodstock NY
Douglas R. Moran - Austin TX
Dale E. Pontius - Colchester VT
Donald W. Price - Lake Katrine NY
Robert Tamlyn - Jericho VT
Yee-Ming Ting - Cornwall NY
De Tran - Woodstock NY
Henry Yeh - Acton MA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11C 700

US Classification:

36523001

Abstract:

A memory system and a unique memory chip is disclosed wherein multiple islands on a chip can be separately accessed by separate island controllers whereby concurrent use of the several islands or arrays on a chip can be achieved.

US Patent:

53332911, Jul 26, 1994

Filed:

Jun 14, 1991

Appl. No.:

7/717772

Inventors:

Warren W. Grunbok - Poughkeepsie NY
Donald W. Price - Lake Katrine NY
De Tran - Woodstock NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1202
G06F 1208

US Classification:

395425

Abstract:

A stride enhancer provides high memory bandwidth on strides greater than one and minimizes requests to memory. The basic memory module (BSM) design uses line fetches as the basic cache complex fetch mechanism and allows operation of the BSM to be stride independent. In the preferred implementation, the BSM has two fetch modes; a normal mode and a line fetch mode. In the normal mode, a quadword (QW) is fetched as in the conventional design. In the line fetch mode, all double words (DWs) within the referenced line are returned to the storage control element (SCE) at two DWs per cycle for strides one through eight (twice the conventional bandwidth) or at least one DW per cycle for all other strides (equal to the conventional bandwidth). This is accomplished with two DW busses rather than a single QW bus and by interleaving DW storage locations within the BSM. In line fetch mode for strides one through eight, DWs are read out according to the stride on the two DW busses.

Author:

De Tran

ISBN #:

0836205847