Register with selective wait feature

Details Register with selective wait feature Register with selective wait feature

1992-07-01

1994-04-05

Heckler, Thomas M.

Boots, shoes, and leggings

364DIG1, 3642715, 3642474, G06F 1300

Patent

active

053013352

ABSTRACT:
A register having a selective wait feature includes logic for receiving a new value to be stored and logic for selectively delaying the appearance of the new value at the output of the register until some predetermined event has occurred. The register can also be read to determine whether the event has occurred. The register is disclosed in the context of a microprocessor-controlled digital timer apparatus which responds to an incoming pulse train. Certain control bits in the apparatus determine whether the digital timer is responsive to rising edges of the pulse train, falling edges, any edges, or no edges. The microprocessor determines, at the time new values are stored to those control bit locations, whether the new values are to become effective immediately or are to be delayed until some intervening event has occurred. The register permits control over the time at which transitions between different operating modes are made in order to assure orderly operation.

REFERENCES:
patent: 4809162 (1989-02-01), Si
patent: 4853847 (1989-08-01), Ohuchi
patent: 5068881 (1991-11-01), Dervisoblu et al.

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