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From: bich@hpsciz.sc.hp.com (Bich Tran)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: sharing hardware interrupts
Message-ID: <13340003@hpsciz.sc.hp.com>
Date: 29 May 91 22:48:52 GMT
References: <1991May29.014824.16278@ux1.cso.uiuc.edu>
Organization: Hewlett-Packard, Santa Clara, CA
Lines: 9

Unfortunately, you cannot have more than one device tied to the interrupt line,
because in the AT system, interrupts are active hi ( really dumb indeed, and
that is corrected in the EISA bus). Only active low AND open collector gates
can be tied together. SO don't try to connect more than one driver to any one particular
interrupt. Any violation can result into burnt-up outpit drivers.

Hope it helps,
sincerely,
bic