Path: utzoo!utgpu!attcan!uunet!pyrdc!pyrnj!rutgers!cs.utexas.edu!natinst!brian
From: brian@natinst.UUCP (Brian H. Powell)
Newsgroups: comp.dcom.modems
Subject: TB+'s and hardware flow control on Sun 3's
Message-ID: <1151@natinst.UUCP>
Date: 23 Sep 88 15:36:16 GMT
Organization: National Instruments, Austin, TX
Lines: 24


     We just got a Trailblazer for our Sun 3/160 running SunOS 4.0, which we
use for uucp.

     We talk to one site that can't handle anything faster than 9600 baud.  We
talk to another site that talks 19.2 to its modem.  Ideally, we'd like to
autobaud between the TB and the Sun, so that we'd always be talking at
whatever baud rate was expected.  Unfortunately, if you set the S51 register
to 254 or 255, and you want to talk 19.2 kbaud, you have to type AAT initially
instead of AT.  Our uucico doesn't (seem to) let you change how it talks to
the modem, so I can't just tell it to use AAT instead of AT.
     What I've done instead is to set S51 to 5, and always talk 19.2 to the
modem.  If I don't have flow control, is this a good idea for the 9600 baud
site?  Will the uucp spoofing suffice for flow control?  It seems to be
working so far, but there are occasional delays (2+ seconds) when transferring
large files.
     Even better, can somebody tell me how to get CTS/RTS flow control on
the Sun?
     Thanks for any help.

Brian H. Powell					National Instruments Corp.
	brian@natinst.uucp			12109 Technology Blvd.
	cs.utexas.edu!natinst!brian		Austin, Texas 78727-6204
	AppleLink:D0351				(512) 250-9119 x832