Microprocessor

Details Microprocessor Microprocessor

1987-07-24

1991-12-03

Shaw, Gareth D.

Boots, shoes, and leggings

364950, 3649504, 3649505, 364947, 3649472, 3649218, 364DIG7, G06F 1312

Patent

active

050704737

ABSTRACT:
A wait signal formed by a program wait circuit incorporated in a microprocessor is transmitted to outside circuitry, such as a slave microprocessor or a direct memory access control device. Thereby an outside device assumes the functions of bus master which is incorporated into a wait operation for access to a memory unit. With such a construction, a microcomputer system comprising a plurality of devices to be made into a bus mask can be simplified.

REFERENCES:
patent: 4037204 (1977-07-01), Bennett et al.
patent: 4414664 (1983-11-01), Greenwood
patent: 4520458 (1985-05-01), Hattori et al.
patent: 4737932 (1988-04-01), Baba
The 8080/8085 Microprocessor Book, 1980, pp. 2-26 and 33-34.
Hitachi Microcomputer Data Book, "8 bits/16 bits Microprocessor", pp. 462-463 (Sep. 1985) (w/translation).

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