Boots – shoes – and leggings
Patent
1985-04-09
1988-07-19
Harkcom, Gary V.
Boots, shoes, and leggings
G06F 1208
Patent
active
047589515
ABSTRACT:
A disk operating system converts virtual storage space locations of one or more processes into real disk or core memory storage space locations of a computer system. Real and virtual storage space are divided into equal sized pages. Real storage pages are grouped into variable sized segments and a separate segment page table is provided for each real storage segment, each entry therein characterizing the nature and location of a page. A separate process map list is provided for each process, each entry therein mapping an area of contiguous virtual storage pages onto a segment page table. Before a process executes a program, the operating system uses the associated process map list, along with the segment page tables mapped by the list, to create a process page table which directly maps virtual storage pages of a process into real storage pages. The operating system then uses the process page table to translate virtual storage addresses into real storage addresses whenever an associated process attempts to access a virtual storage location.
REFERENCES:
patent: 4130870 (1978-12-01), Schneider
patent: 4385352 (1983-05-01), Bienvenu
patent: 4395757 (1983-07-01), Bienvenu
Baer, J. L., Computer Systems Architecture, Computer Science Press, 1980, pp. 216-223, 270-273, 296-309.
Clark David L.
Harkcom Gary V.
Hulse Robert S.
Smith-Hill John
Tektronix Inc.
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