Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!att!mcdchg!ddsw1!corpane!drl
From: drl@corpane.UUCP (Dan Lance)
Newsgroups: comp.lang.postscript
Subject: Re: 9600 bps bottleneck on Laserwriter Plus
Message-ID: <1315@corpane.UUCP>
Date: 12 Jan 90 15:54:46 GMT
References: <1200@cernvax.UUCP> <3495@hub.UUCP> <1990Jan10.042555.19571@grian.cps.altadena.ca.us> <21091@pasteur.Berkeley.EDU>
Reply-To: drl@corpane.UUCP (Dan Lance)
Organization: Corpane Industries, Inc.
Lines: 34

In article <21091@pasteur.Berkeley.EDU> hastings@hemlock.Berkeley.EDU (Mark Hastings) writes:
>Has anyone heard of another "safety valve" feature of the Laserwriter
>that allows you
>to reset the EPROM settings in case you accidentally screw up the baud
>rate?  I've
>been reluctant to try any of these speedups unless I knew I could return
>things to
>normal if problems arose (and finding a 9-pin serial cable for our sun
>would take
>a long time).
>
>Also, does anyone really trust a Sun 3/60 serial port to go much faster
>than 19.2kb?

The serial ports on all Sun 3 motherboards will reliably do 38400 baud.  When
I used to work with Suns, I ran our LaserWriter at 38400 baud without
a hitch through the Sun-supplied printer cable.  Of course, if your printer
is located a good distance from the 3/60, you may not be able to use the
higher baud rates.  Try it and see.

As for screwing up the baud rate:  the program to change the baud rate
needs to be sent to the printer only once, as the information is not stored
in RAM.  If you are careful I doubt you will have any problems.

>--Mark Hastings           			(415) 642-4611
>  hastings@ernie.berkeley.edu			..!ucbvax!ernie!hastings

--drl
Dan Lance / Corpane Industries, Louisville KY 
...!uunet!corpane!drl  corpane!drl@ddsw1.mcs.com  corpane!drl@e.ms.uky.edu
-- 
--drl
Dan Lance / Corpane Industries, Louisville KY 
...!uunet!corpane!drl  corpane!drl@ddsw1.mcs.com  corpane!drl@e.ms.uky.edu