Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!ksand
From: ksand@Apple.COM (Kent Sandvik, 120dB or more)
Newsgroups: comp.unix.aux
Subject: Re: Is A/UX Mature?
Message-ID: <13076@goofy.Apple.COM>
Date: 15 Apr 91 23:16:27 GMT
References: <1530@ucl-cs.uucp>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 26

In article <1530@ucl-cs.uucp> J.Purchase@cs.ucl.ac.uk (Jan Purchase) writes:
>

>c) Why can one not change the speed of a serial port which does not
>have a getty process associated with it (e.g., one connected
>to a outgoing only modem)?  commands like:
>	stty -n /dev/modem 1200
>or:
>	stty 1200 < /dev/modem
>which are quoted in SVR2 text books have no effect. A/UX just keeps
>the line speed at the default 9600 baud.

I thought that this 'immaturity' was always present with SysV UNIX:es,
i.e. the only way to program the speed/other attributes for a non-respawn
port was to write a small program that opens the port, ioctls the new
values, and keeps the port open until the doomsday of the running system.

It's always a fun game trying to find out the default port values of the 
manifacturer's UNIX system. Sometimes they even document them.

Regards,
Kent


-- 
Kent Sandvik, DTS junkie