Shared hardware interrupt circuit for personal computers

Details Shared hardware interrupt circuit for personal computers Shared hardware interrupt circuit for personal computers

1992-07-16

1993-02-16

Heckler, Thomas M.

Boots, shoes, and leggings

364DIG2, 364927, 364941, 36492793, G06F 1300

Patent

active

051877813

ABSTRACT:
A logic circuit for allowing multiple device adapters to be connected to a single interrupt level in an interrupt level-sharing environment. The circuit provides protection of the adapters from physical damage and provides a vehicle for using certain adapters not designed for use in a level sharing environment to be used in a level sharing environment. The circuit includes means for preventing destructive current flow from one adapter to a second adapter sharing the same interrupt level. The circuit also includes means for converting the rising edge interrupt request signal to a signal useful in a level sensitive system.

REFERENCES:
patent: 4103335 (1978-07-01), Vitali
patent: 4621342 (1986-11-01), Capizzi et al.
patent: 4631670 (1986-12-01), Bradley et al.
patent: 4974199 (1990-11-01), Verbanets, Jr. et al.

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