Dennis D Gibbs

US Patent:

43744176, Feb 15, 1983

Filed:

Feb 5, 1981

Appl. No.:

6/231639

Inventors:

David J. Bradley - Boca Raton FL
Dennis D. Gibbs - Lighthouse Point FL
Donald J. Kostuch - Boca Raton FL
James S. Martin - Coral Springs FL

Assignee:

International Business Machines Corp. - Armonk NY

International Classification:

G06F 930

US Classification:

364200

Abstract:

In a computer system, paging operates and a method of use thereof are provided for extending the addressing capability of a processor by using a page register. The page register includes means for storing different codes for different operations to be performed on the memory. The memory is divided into four groups of memory within 2. sup. n addresses such that there is paged and unpaged ROM and paged and unpaged RAM. The unpaged ROM and RAM include only a single block which is directly addressed by the n bit address bus. The paged ROM and RAM includes a plurality of blocks or pages, one of which is selected to be addressed by the page register. The page register responds to the address bus and to signals from the processor defining the memory operation to be performed by providing page signals, selecting one page of paged memory. The method of using the paging apparatus includes creating a table in the unpaged RAM of all routines in the paged memory blocks and using the table to transfer from one routine to another. Within the table is a code identifying the page in which the new routine exists and an offset into that page used to determine the address in that page of the new routine.

US Patent:

44438478, Apr 17, 1984

Filed:

Feb 5, 1981

Appl. No.:

6/231653

Inventors:

David J. Bradley - Boca Raton FL
Lewis C. Eggebrecht - Boca Raton FL
Dennis S. Gibbs - Lighthouse Point FL
Donald J. Kostuch - Boca Raton FL

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 930

US Classification:

364200

Abstract:

In a computer system, paging operates and a method of use thereof are provided for extending the addressing capability of a processor by using a page register. The page register includes means for storing different codes for different operations to be performed on the memory. The memory is divided into four groups of memory within 2. sup. n addresses such that there is paged and unpaged ROM and pages and unpaged RAM. The unpaged ROM and RAM include only a single block which is directly addressed by the n bit address bus. The paged ROM and RAM includes a plurality of blocks or pages, one of which is selected to be addressed by the page register. The page register responds to the address bus and to signals from the processor defining the memory operation to be performed by providing page signals, selecting one page of paged memory. The method of using the paging apparatus includes creating a table in the unpaged RAM of all routines in the paged memory blocks and using the table to transfer from one routine to another. Within the table is a code identifying the page in which the new routine exists and an offset into that page used to determine the address in that page of the new routine.

US Patent:

47180056, Jan 5, 1988

Filed:

May 3, 1984

Appl. No.:

6/604684

Inventors:

Barry A. Feigenbaum - Deerfield Beach FL
Dennis D. Gibbs - Lighthouse Point FL
Robert Sachsenmaier - Boca Raton FL

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1516

US Classification:

364200

Abstract:

Computer systems linked to nodes in a communication network communicate directly with each other to establish name associations for entities (e. g. programs, storage files, etc. ) susceptible of being shared across the network, and thereafter communicate further by names (rather than addresses) to establish sessions (i. e. logical connections over the network) between entities. Each system maintains a table of names assigned to locally accessible entities. The name and session establishment processes are architected to avoid dependence on any "central" or "master" system, and to allow for extension of communications relating to these processes across devices linking portions of the network associated with different communication media or channels.