Look-aside buffer LRU marker controller

Details Look-aside buffer LRU marker controller Look-aside buffer LRU marker controller

1984-09-07

1987-03-03

Eng, David Y.

Boots, shoes, and leggings

G06F 936, G06F 1300

Patent

active

046480331

ABSTRACT:
A look-aside buffer in a computer system has a memory containing at least a first type of data ans a second type of data stored in a page format. The look-aside buffer is arranged to retain at least two different real addresses as resolved by the system which indicate pages containing the different types of data. One of the addresses is indicated as least recently used by a marker and such address is deleted when a further different address is resolved by the system unless the address being resolved is an address corresponding to the first type of data. In such a case, the marker is not changed such that the second type of data addresses are not deleted from the look-aside buffer as a result of resolution of a first type data page address by the system.

REFERENCES:
patent: 4059850 (1977-11-01), Van Eck et al.
patent: 4170039 (1979-10-01), Beacom et al.
patent: 4322795 (1982-03-01), Lange
patent: 4332010 (1982-05-01), Messina et al.
patent: 4400774 (1983-08-01), Toy
patent: 4437155 (1984-03-01), Sawyer
patent: 4464712 (1984-08-01), Fletcher

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