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From: hwh@cup.portal.com (Harold W Hankins)
Newsgroups: comp.unix.microport
Subject: Re: Re: com3 & com4 -> tty2 & tty3
Message-ID: <17775@cup.portal.com>
Date: 30 Apr 89 18:20:42 GMT
References: <42700008@osiris.cso.uiuc.edu> <10770017@hpcupt1.HP.COM>
Distribution: usa
Organization: The Portal System (TM)
Lines: 11

/ hpcupt1:comp.unix.microport / dave@micropen (David F. Carlson) /  9:05 am  Apr 27, 1989 /
>If you have a PC/AT style bus, IRQ2 is not even a valid bus signal!

My IBM Tech Reference Manual shows pin B04 (the pin that was IRQ2 on the XT)
as IRQ9.  The schematic shows IRQ9 going to the second interrupt line on the
second 8259A.  That would make any board trying to use "IRQ2" on the AT
show up at IRQ9.

Harold Hankins			hwh@cup.portal.com
Point of Sales Systems
Camarillo, CA