Expansion system

Details Expansion system Expansion system

1991-09-10

1993-04-13

Fleming, Michael R.

Static information storage and retrieval

Magnetic bubbles

Guide structure

395425, 36523003, 364243, 3642434, 36424341, 364244, 3642442, 364DIG1, G06F 1202

Patent

active

052029689

ABSTRACT:
A cache LSI has an expansion pin which is set to "0" (GND) level or "1" (Vcc) level. A portion of a SET field of a cache directory is used as a field for selecting a cache LSI. Each cache LSI includes a determination circuit. The determination circuit performs a predetermined logical operation based on a level signal set at the expansion pin and a level signal of the cache selection field in the SET field, and determines whether or not an intra-chip is selected.

REFERENCES:
patent: 4296467 (1981-10-01), Nibby, Jr. et al.
patent: 4432067 (1984-02-01), Nielsen
patent: 4484506 (1984-11-01), Sato
patent: 4534257 (1985-08-01), Mitarai
patent: 4554638 (1985-11-01), Iida
patent: 4609996 (1986-09-01), Kummer
patent: 4707802 (1987-11-01), Takahashi
patent: 4761736 (1988-08-01), Di Orio
patent: 4884270 (1989-11-01), Chiu et al.

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