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Path: sserve!newshost.anu.edu.au!munnari.oz.au!hp9000.csc.cuhk.hk!saimiri.primate.wisc.edu!nntp.msstate.edu!darwin.sura.net!howland.reston.ans.net!cs.utexas.edu!uunet!olivea!hal.com!decwrl!usenet.coe.montana.edu!bsd.coe.montana.edu!nate From: nate@bsd.coe.montana.edu (Nate Williams) Newsgroups: comp.os.386bsd.questions Subject: Re: DOS disk + SIO lines Date: 20 Jan 1994 18:08:04 GMT Organization: Montana State University - Bozeman MT Lines: 30 Message-ID: <2hmha4$30h@pdq.coe.montana.edu> References: <2hkvb0$8c0@larch.cc.swarthmore.edu> NNTP-Posting-Host: bsd.coe.montana.edu In article <2hkvb0$8c0@larch.cc.swarthmore.edu>, Patrick Mills <mills@engin.swarthmore.edu> wrote: >2.) How can I access COM 3 and COM 4. I'd like to be able to access my > internal modem. I currenly have COM 1 and COM 2 setup as SIO lines > and they work fine. I have tried masses of different configurations > but nothing seems to work. > > IRQ PORT > COM 1 4 03F8 > COM 2 3 02F8 > COM 3 4 03E8 > COM 4 3 02E8 As far as I'm aware of, you can't share interrupts with the dumb serial I/O cards that are normally supplied with PC's. You must get one of the multiple-serial cards that are prevalent in BBS's in order to have multiple serial lines on the same IRQ. I don't think any of the free unices handle shared interrupts on the cheap cards. Nate -- nate@bsd.coe.montana.edu | Freely available *nix clones benefit everyone, nate@cs.montana.edu | so let's not compete with each other, let's work #: (406) 994-4836 | compete with folks who try to tie us down to home #: (406) 586-0579 | proprietary O.S.'s (Microsloth) - Me