Buffer storage control apparatus

Details Buffer storage control apparatus Buffer storage control apparatus

1980-05-23

1982-09-14

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 734, G11C 700, G06F 700

Patent

active

043498752

ABSTRACT:
A buffer storage control apparatus selectively employs the conventional "least-recently-used" (LRU) algorithm or the "all-used" (AU) algorithm to determine which block of data in the buffer storage unit is to be replaced by new data. The AU algorithm relies on the fact that under certain conditions, such as the straight transfer of a block of data from a main memory to an output device under the control of an I/O supervisor, the block of data so transferred will no longer be needed. The control apparatus therefore detects such a data transfer and selectively allocates buffer storage in accordance with the AU or LRU algorithms.

REFERENCES:
patent: 3699533 (1972-10-01), Hunter
patent: 4008460 (1977-02-01), Bryant et al.

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