Installation and use of plural expanded memory managers

Details Installation and use of plural expanded memory managers Installation and use of plural expanded memory managers

1995-06-07

1997-04-22

Black, Thomas G.

Boots, shoes, and leggings

395405, 395412, 395490, 395681, 364DIG1, 364245, 3642454, 36424531, G06F 1200, G06F 946

Patent

active

056236182

ABSTRACT:
Simultaneous use of multiple expanded memory cards and their associated Expanded Memory Manager (EMM) device drivers in a computer system is provided. First, an expanded memory card is added and its EMM device driver will check to verify if another EMM driver is currently installed. If so, the new EMM device driver will take control of the existing EMM device driver in a master-slave relationship. The new EMM device driver (master) controls the existing EMM device driver (slave) by use of the slave's interrupt vector. That is, the master controls the slave by having an interrupt vector for the slave readdressed to be input to the master. Thereby, providing the master with the which expanded memory interrupts the slave was required to service. The master also takes control of all the slave's handles and pages by appearing as a requesting program application to the slave. Another feature of the present invention will allow multiple EMM device drivers to be installed in an efficient manner, by eliminating code that is redundant between existing and newly added EMM drivers.

REFERENCES:
patent: 3435420 (1969-03-01), Wissick
patent: 3469241 (1969-09-01), Barton et al.
patent: 3803560 (1974-04-01), DeVoy et al.
patent: 3813652 (1974-05-01), Elmer et al.
patent: 4001790 (1977-01-01), Barlow
patent: 4025903 (1977-05-01), Kaufman et al.
patent: 4037215 (1977-07-01), Birney et al.
patent: 4234934 (1980-11-01), Thorsurd
patent: 4254463 (1981-03-01), Busby et al.
patent: 4280176 (1981-07-01), Tan
patent: 4303993 (1981-12-01), Panepinto, Jr. et al.
patent: 4354258 (1982-10-01), Sato
patent: 4355376 (1982-10-01), Gould
patent: 4414627 (1983-11-01), Nakamura
patent: 4740916 (1988-04-01), Martin
patent: 4926322 (1990-05-01), Stimac et al.
patent: 4943910 (1990-07-01), Nakamura
patent: 4974159 (1990-11-01), Hargrove et al.
patent: 5123098 (1992-06-01), Gunning et al.
patent: 5237669 (1993-08-01), Spear et al.
patent: 5280599 (1994-01-01), Aria
patent: 5349661 (1994-09-01), Brewer et al.
IBM TDB "Memory Allocation and Addressing", vol. 11, No. 1, Jun. 1968, pp. 67-70.
IBM TDB "Memory Addressing System", vol. 15, No. 3, Aug. 1972, pp. 1035-1036.

Affiliated with

Also associated with

Rating

Installation and use of plural expanded memory managers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Installation and use of plural expanded memory managers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Installation and use of plural expanded memory managers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-348765