Title: Hardware virtualizer for supporting recursive virtual computer systems on a host computer system

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.

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Inventors: Goldberg, Robert P. (Newton Highlands, MA, US)

Application Number: 973449
Filing Date: 1978-12-26
Publication_date: 1981-02-24
Assignee: Honeywell Information Systems Inc. (Waltham, MA)
Primary Class(es): 703/21
Other Classes:
US Patent Ref:

3412382	Nov, 1968	Couleur et al.	364/200.
3425036	Jan, 1969	Packard	364/200.
3461434	Aug, 1969	Barton et al.	364/200.
3546677	Dec, 1970	Barton et al.	364/200.
3614745	Sep, 1969	Podvin et al.	364/200.
3665487	May, 1972	Campbell et al.	364/200.
3766533	Oct, 1973	Black et al.	364/200.
3858182	Dec, 1974	Delagi et al.	364/200.
3955180	May, 1976	Hirtle	364/200.
3983539	Sep, 1976	Faber et al.	364/200.
3983541	Sep, 1976	Faber et al.	364/200.

Other Refs:
Primary Examiner: Springborn, Harvey E.
Assistant Examiner:
Attorney: Finnegan, Henderson, Farabow, Garrett & Dunner