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Newsgroups: comp.os.386bsd.questions Path: sserve!manuel.anu.edu.au!munnari.oz.au!metro!ipso!runxtsa!bde From: bde@runx.oz.au (Bruce Evans) Subject: Re: Faster com speeds? Message-ID: <1993Mar1.010649.10751@runx.oz.au> Organization: RUNX Un*x Timeshare. Sydney, Australia. References: <1993Feb25.181623.6494@coe.montana.edu> Date: Mon, 1 Mar 93 01:06:49 GMT Lines: 23 In article <1993Feb25.181623.6494@coe.montana.edu> osyjm@cs.montana.edu (Jaye Mathisen) writes: > > >OK, 386bsd 0.1, 2.1 patchkit, 2.1 com drivers from cgd. My com2 is a 16550. > >How do I make proper entries to say, run my incoming modem at 57.6k or >76.8k, or 115.2k? The standard and cgd drivers are probably too slow to handle these speeds. 76800 is not supported by xx50 hardware. >I just edited gettytab to create a std.38400, but can I just keep >tossing in numbers? ie std.41200? I don't think so. So somewhere this >stuff has to be defined/configured. Arbitrary integral speeds work to within the limitations of the driver, provided that the program uses the termios interface. getty is not such a program. It uses the obsolescent sgttyb interface which is limited to 38400 in the standard driver. It's easy to change the driver to support more speeds (just enlarge a couple of tables). It's more work to support more speeds in all the old programs. -- Bruce Evans (bde@runx.oz.au)