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- Newsgroups: comp.os.linux
- From: agc@weasel.demon.co.uk (Alan Charlton)
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!agate!doc.ic.ac.uk!pipex!demon!weasel.demon.co.uk!agc
- Subject: Re: Changing a Serial Port IRQ Number
- Reply-To: agc@weasel.demon.co.uk
- Distribution: world
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- Lines: 27
- Date: Thu, 17 Dec 1992 12:22:52 +0000
- Message-ID: <724620172snx@weasel.demon.co.uk>
- Sender: usenet@demon.co.uk
-
- In article <1992Dec17.003953.24890@unislc.uucp> erc@unislc.uucp (Ed Carp) writes:
- > Bill Woodward (wpwood@queball.austin.ibm.com) wrote:
- >
- > : How does one go about changing the IRQ that a specific serial port
- > : uses. I have a modem on COM3 under DOS running with IRQ 5. When I
- > : switch to Linux and boot, the bootup messages say that the IRQ for
- > : /dev/ttys2 is 4. Is there a config file I am missing, or do I need
- > : to recompile the kernel?
- > : Any suggestions happily accepted.
- >
- > Either #undef the AUTO_IRQ stuff in kernel/chr_dev/serial.c, or use setserial
- > to reset the IRQ for the card.
-
- Or alternatively reset the IRQ values in the table of standard serial port parameters
- about 50-odd lines down in serial.c. I did this and have had no problems. In fact
- with AUTO-IRQ defined I get zmodem CRC errors and all sorts of other weird stuff.
-
- Cheers,
-
- Alan.
- --
- +---------------------------------+--------------------------------+
- | Alan Charlton, Bristol, England | If B.U.R.D. doesn't spell Bird |
- | agc@cix.compulink.co.uk | - what the hell does it spell? |
- | agc@weasel.demon.co.uk | |
- | Tel: +44 454 202706 (after 6) | --- W. R. Hearst |
- +---------------------------------+--------------------------------+
-