home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.os.linux
- Path: sparky!uunet!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!ira.uka.de!Germany.EU.net!horga!agsc!veeble.han.sub.org!gkminix!gero
- From: gero@gkminix.han.de (Gero Kuhlmann)
- Subject: Re: Conflicting IRQs
- References: <1993Jan6.070636.5289@cbfsb.cb.att.com>
- Organization: gkminix, Hannover, Germany
- Date: Fri, 8 Jan 93 12:10:48 GMT
- X-Newsreader: TIN [version 1.1 PL6]
- Message-ID: <1993Jan8.121048.1681@gkminix.han.de>
- Lines: 24
-
- William T. O Connell (wto@cbnewsg.cb.att.com) wrote:
- > There have been posts in the past that discuss how to handle situations
- > like this when two devices are used simultaneously which have the same IRQ.
- > e.g.)
-
- Try to get the postings from an archive. Some of them explain it quite well
- how to use interrupts and interrupt sharing.
-
- > So I thought I would simply change the IRQ on the modem from 4 to 5. e.g)
- > /dev/ttys0, Type: 16450, Line: 0, Port: 0x03f8, IRQ: 4 # Mouse
- > /dev/ttys2, Type: 16450, Line: 2, Port: 0x03e8, IRQ: 5 # Modem
-
- Managing interrupts means managing the hardware! It is not that simple as
- to tell the software to use another interrupt. You have to change the
- interrupt assignment on the boards first. Therefore it wouldn't help to
- tell the kernel to use IRQ5 or IRQ10 (as you mentioned) unless you
- really connect the serial board to exactly that interrupt.
-
- gero.
-
- --
- Gero Kuhlmann Zerberus: G.KUHLMANN@A-LINK-H.ZER
- Donarweg 4 SubNet: gero@gkminix.sub.org
- D-3000 Hannover 51 IN: gero@gkminix.han.de
-