Register write bit protection apparatus and method

Details Register write bit protection apparatus and method Register write bit protection apparatus and method

1989-07-28

1992-11-03

Levy, Stuart S.

Static information storage and retrieval

Read/write circuit

Signals

365226, 365228, 395425, 3642468, 3649694, G11C 700, G06F 1214

Patent

active

051611228

ABSTRACT:
A register circuit and method which allows a multi-bit register to change states until such time as a particular dedicated bit is activated. Once the dedicated bit is turned to the logical on-state none of the bits, including the dedicated bit, can be changed until a reset signal is sensed.

REFERENCES:
patent: 3160876 (1964-12-01), Stochel
patent: 3564517 (1971-02-01), McLean et al.
patent: 4429300 (1984-01-01), Yamasawa et al.
patent: 4935645 (1990-06-01), Lee
Strauss, E., 80386 Technical Reference, Brady Books, 1987, pp. 3-31.
Brumm, P. and D. Brumm, 80386 A Programming and Design Handbook, TAB Professional and Reference Books, 1987, pp. 127-142.

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