Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!uhura.cc.rochester.edu!ur-valhalla!micropen!dave
From: dave@micropen (David F. Carlson)
Newsgroups: comp.unix.microport
Subject: Re: com3 & com4 -> tty2 & tty3
Summary: pretty good for a ghost signal
Message-ID: <682@micropen>
Date: 27 Apr 89 16:05:46 GMT
References: <243@kralc.UUCP> <42700009@osiris.cso.uiuc.edu> <9255@wb3ffv.UUCP>
Organization: Micropen Dirent Writing Systems, Pittsford, NY
Lines: 21

> > >You can not use IRQ2 for anything under Unix - it is already used by the
> > >system.
> > 
!  I would also like to hear why you can't! I am running AT&T UNIX V/386
! Release 3.2, and when I installed the Xwindow mouse driver the package 
! gave me the option of using IRQ2. Needless to say I have my mouse using
! IRQ2 very successfully, so I am very interested...
! 
! Internet  : howardl@wb3ffv.ampr.org	|	Howard D. Leadmon

If you have a PC/AT style bus, IRQ2 is not even a valid bus signal!
IRQ 10, 11, 12; 14, 15 are mapped onto the AT-specific connector.
IRQ 3, 4, 5, 6, 7 are preserved onto the PC-bus commpatible connector.
Thus, a guess, is that you are not using a true AT bus compatible machine
or *your driver is polling* and not using the interrupt for a d*mn thing!

-- 
David F. Carlson, Micropen, Inc.
micropen!dave@ee.rochester.edu

"The faster I go, the behinder I get." --Lewis Carroll