Method to automatically detect the interrupt channel status of a

Details Method to automatically detect the interrupt channel status of a Method to automatically detect the interrupt channel status of a

1996-07-26

1998-04-14

Harvey, Jack B.

G06F 922

Patent

active

057404500

ABSTRACT:
A method to automatically detect the interrupt channel status of an add-on card by providing an IRQ set port, an IRQ status port, and an IRQ force port on the card wherein the IRQ set port is used to preset an interrupt channel code of the card, the IRQ status port is used to read the present status of the interrupt channel, and the IRQ force port is used to ground the interrupt channel through a resistor when the logic is "1", and not to ground the interrupt channel when the logic is "0".

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patent: 5014193 (1991-05-01), Garner et al.
patent: 5111423 (1992-05-01), Kopec, Jr. et al.
patent: 5138257 (1992-08-01), Katsuka
patent: 5161102 (1992-11-01), Griffin et al.
patent: 5280618 (1994-01-01), Takagi
patent: 5353432 (1994-10-01), Richek
patent: 5373514 (1994-12-01), Ma

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