ROBERT P GOLDBERG
Broker in Newton, MA
License number
Massachusetts 81290
Issued Date
Nov 1, 1973
Expiration Date
Dec 4, 1976
Type
Broker
Address
Address
Newton, MA 02461
Professional information
Hardware Virtualizer For Supporting Recursive Virtual Computer Systems On A Host Computer System
US Patent:
4253145, Feb 24, 1981
Filed:
Dec 26, 1978
Appl. No.:
5/973449
Inventors:
Robert P. Goldberg - Newton Highlands MA
Assignee:
Honeywell Information Systems Inc. - Waltham MA
International Classification:
G06F 944
US Classification:
364200
Abstract:
A hardware virtualizer establishes correspondence between the real process names of the processes executing on a general purpose host computer and the virtual resource names of virtual resources simulated within a plurality of reserved areas of memory of the host computer as duplicates of the real resources, the virtualizer including: (1) a register for controlling access to the individual virtual operating levels; (2) a. phi. -map for selectively associating process names with real resource names at the real level of operation, termed the 0 level; (3) an f-map for establishing correspondence between the names of virtual resources being simulated at various levels of virtual operation, termed level (n+1) through n and successively higher levels to level 1; and (4) a composer mechanism for combining information accessed from the. phi. -map and the f-map for establishing correspondence between the virtual resource names and the real resource names.