Method for executing overlays in an expanded memory data process

Details Method for executing overlays in an expanded memory data process Method for executing overlays in an expanded memory data process

1989-06-16

1992-12-29

Levy, Stuart S.

Boots, shoes, and leggings

395425, 364DIG1, G06F 1202

Patent

active

051758300

ABSTRACT:
A method includes the steps of differentiating Overlays each into a code portion and into a data portion, storing the data portions within a CPU directly-accessible memory, storing the code portions within a memory not-directly accessible by the CPU, and swapping a required code portion into the directly-accessible memory for execution by the CPU such that the swapped-in code portion has access to a plurality of the data portions stored within the directly-accessible memory.

REFERENCES:
patent: 4080651 (1978-03-01), Cronshaw et al.
patent: 4403283 (1983-09-01), Myntti et al.
patent: 4410940 (1983-10-01), Carlson et al.
patent: 4926322 (1990-05-01), Stimac et al.
"Expanded Memory: Writing Programs that Break the 640k Barrier", Hansen et al., Microsoft Systems Journal, Mar. 1987, pp. 21-32.
IBM Technical Disclosure Bulletin, vol. 28, No. 12, May 1986, New York, U.S., pp. 5615-5620; "Overlay Linker and Loader Process".
IBM Technical Disclosure Bulletin, vol. 16, No. 11, Apr. 1974, New York, U.S., p. 3626; Doggett: "Reentrant Variable Initialization".
"Disk Operating System Technical Reference 6138536", Feb. 1985, published by the IBM Corporation, Chapter 10, "EXE File Structure and Loading".
"Reaching Into Expanded Memory" PC Tech Journal May 1987.

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