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From: hastings@hemlock.Berkeley.EDU (Mark Hastings)
Newsgroups: comp.lang.postscript
Subject: Re: 9600 bps bottleneck on Laserwriter Plus
Message-ID: <21091@pasteur.Berkeley.EDU>
Date: 11 Jan 90 01:14:02 GMT
References: <1200@cernvax.UUCP> <3495@hub.UUCP> <1990Jan10.042555.19571@grian.cps.altadena.ca.us>
Sender: news@pasteur.Berkeley.EDU
Reply-To: hastings@hemlock.Berkeley.EDU (Mark Hastings)
Organization: UCB CS
Lines: 25

In article <1200@cernvax.UUCP>, achille@cernvax.UUCP (achille petrilli) writes:
> 
> [ ... ]
> 
> By the way you can change independently the speed on the 25 pin port and
> on the 9 pin port. I'd recommend that you set one of them to 9600 baud
> before, then you test it, and when you're sure everything works, you reset
> the other to 38k. This insures that you can still talk to the printer
> even if you do a mistake.

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?

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