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- Newsgroups: comp.os.linux
- Path: sparky!uunet!sun-barr!ames!haven.umd.edu!darwin.sura.net!news.udel.edu!bach.udel.edu!radel
- From: radel@bach.udel.edu (Todd Radel)
- Subject: Re: running high speed modems under *nix
- Message-ID: <BuF7IA.ArF@news.udel.edu>
- Sender: usenet@news.udel.edu
- Nntp-Posting-Host: bach.udel.edu
- Organization: University of Delaware
- References: <1992Sep10.185116.9614@aw2.fsl.ca.boeing.com> <BuDz1M.Jq4@ux1.cso.uiuc.edu> <lgvn70k.harp@netcom.com>
- Date: Fri, 11 Sep 1992 15:39:46 GMT
- Lines: 28
-
- In article <lgvn70k.harp@netcom.com> harp@netcom.com (Gregory O. Harp) writes:
- >In my somewhat limited experience of coding serial routines for DOS, I
- >have noted that rates above 38.4Kbaud are usually achieved through
- >tight polling loops rather than interrupt serial communications.
- >Remember the DOS box, since it runs a single-tasking interrupt handler
- >rather than a real OS, doesn't have to do anything other than hit the
- >serial port.
-
- Well, one of the DOS comm programs that someone mentioned as being
- capable of 115.2Kbps is QModem, which I'm using right now. Interestingly
- enough, QModem won't allow anything above 38.4 unless "interrupt-driven
- I/O" is set to ON in the config.
-
- I've got my Supra locked at 57.6Kbps with interrupt-driven I/O and
- an NS16550AFN, and everything is fine -- even under MS Windows.
-
- Unfortunately, one of the main reasons I stopped using Linux (at least
- temporarily) is that I couldn't get the modem to work reliably
- at 19.2 or above. If that ever gets fixed, we might have one more
- public-access Linux site on our hands.
-
-
-
- --
- Todd Radel | "I obscenity in the milk of all," Agustin said,
- CIS/English undergrad | "if it does not seem like a lunatic asylum in
- University of Delaware | here." -- Hemingway, _For Whom the Bell Tolls_
- A.I. duPont Institute, 1600 Rockland Road, Wilmington, DE 19899
-