Title: Virtual addressing apparatus for addressing the memory of a computer utilizing associative addressing techniques

Abstract: Apparatus is provided for forming an absolute address for accessing the memory of a computer in which a plurality of associative registers each containing an associative word are arranged in sequential order, each associative word having an absolute page identifier and a virtual page identifier. Means is provided for comparing the virtual page identifier of the associative words with a virtual page identifier of a job program, and means is provided for sequentially shifting the associative words so that the associative word containing the virtual page identifier which corresponds to the virtual page identifier of the job program is placed in the highest ordered associative register.

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Inventors: Steiner, Louis Kent (Blaine, MN, US)

Application Number: 477215
Filing Date: 1974-06-07
Publication_date: 1976-02-10
Assignee: Control Data Corporation (Minneapolis, MN)
Primary Class(es): 711/206 711/200, 711/208
Other Classes:
US Patent Ref:

3292153	Dec, 1966	Barton	340/172.
3533075	Oct, 1970	Johnson	340/172.
3588839	Jun, 1971	Belady	340/172.
3685020	Aug, 1972	Meade	340/172.
3693165	Sep, 1972	Reiley	340/172.
3761881	Sep, 1973	Anderson	340/172.
3764996	Oct, 1963	Ross	340/172.
3786427	Jan, 1974	Schmidt	340/172.
3839706	Oct, 1974	Borchsenius	340/172.

Other Refs:
Primary Examiner: Shaw, Gareth D.
Assistant Examiner: Thomas, James D.
Attorney: Angus; Robert M.