Path: utzoo!attcan!uunet!cs.utexas.edu!rice!sun-spots-request
From: auspex!guy@uunet.uu.net (Guy Harris)
Newsgroups: comp.sys.sun
Subject: Re: Serial port speed
Keywords: Hardware
Message-ID: <10102@brazos.Rice.edu>
Date: 19 Jul 90 18:51:25 GMT
Sender: root@rice.edu
Organization: Sun-Spots
Lines: 9
Approved: Sun-Spots@rice.edu
X-Refs:  Original: v9n264, Replies: v9n267
X-Sun-Spots-Digest: Volume 9, Issue 272, message 11
Originator: spots@titan.rice.edu

>Under 4.0.3, termio(4) and <sys/ttydev.h> agree that 38400 is as high as
>you can go unless you get more clever with EXTA or EXTB than getty may be
>able to handle.

EXTA is another name for 19.2; EXTB is another name for 38.4.  The speed
field is 4 bits long; what you see is what you get, and there ain't any
more speeds supported by the asynchronous-mode CPU serial port driver, nor
by the ALM-2 driver (I think the ALM-1 driver is stuck - the board doesn't
even support 38.4).