Memory protective circuit

Patent

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Details

395490, G06F 1214

Patent

active

055640362

ABSTRACT:
A memory protective circuit comprising a RAM. An area of the RAM where any writing is inhibited is designated. When there are instructions to write into the area where any writing is inhibited, writing into the area is prevented.

REFERENCES:
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patent: 3573855 (1971-04-01), Cragon
patent: 3576544 (1971-04-01), Cordero, Jr. et al.
patent: 4298934 (1981-11-01), Fischer
patent: 4332009 (1982-05-01), Gerson
patent: 4405983 (1983-09-01), Perez-Mendez
patent: 4545016 (1985-10-01), Berger
patent: 4589064 (1986-05-01), Chiba et al.

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