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Interrupt Arbitrator Routine

IP.com Disclosure Number: IPCOM000044654D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06

Publishing Venue

IBM

Related People

Authors:
Hayes, RL Perry, RG [+details]

Abstract

This routine allows multiple hardware function cards, requiring a common hardware interrupt in a computer, to be operated simultaneously. A software routine provides interrupt arbitration between multiple hardware function cards that require usage of common interrupts. The routine modifies a timer call vector such that upon each timer interval the routine is executed. When the routine is executed, it calls the address vector present at load time, thus insuring that the performance of the computer is not degraded. The interrupt arbitrator can be operated in two modes. In the first mode, PEER POLL MODE, each card's control code is executed based on the status found at the hardware function card.