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From: woody@rpp386.cactus.org (Woodrow Baker)
Newsgroups: comp.lang.postscript
Subject: Re: 9600 bps bottleneck on Laserwriter Plus
Summary: how to recover
Message-ID: <17626@rpp386.cactus.org>
Date: 11 Jan 90 12:57:28 GMT
References: <3495@hub.UUCP> <17612@rpp386.cactus.org>
Distribution: na
Organization: River Parishes Programming, Plano, TX
Lines: 28

In article <17612@rpp386.cactus.org>, woody@rpp386.cactus.org (Woodrow Baker) writes:
> In article <3495@hub.UUCP>, jim@cavevax.ucsb.edu (Oreo Cat) writes:
> > you.  We have an Apple Laserwriter Plus here in our lab.  Occaisonally
> > we have to print out large bitmapped images.  Since our printer is 
> > hooked up to a serial line, it is limited to 9600 bps.  Since bitmaps
> > 38400 bps, but unfortunatley the serial port on the LW+ only goes up to
> > 9600.  I am told that the appletalk connection runs at something like
> > 64 kbps.  Is there any way of connecting this to a serial port?  Or is
> > there any way of making the serial port run faster than 9600?
> Off hand, there are 2 possbilities.  The first is to get a larg printer buffer,
> and the second involves changing the baud rate.  You can indeed set the
> printers baud-rate to a higher value.  Don Lancaster runs his at 57Kbaud, over
> the serial line, but it is unidirectional only.  I'd suggest that you could
> set the baud-rate on the printer to 38.4k and try it.  you can always reset
> it back.  Just use the command as it is documented in your suppliment, but
> change 9600 to say 19200 or 38400 and try it.  Alternatly you can call Don
> at 602-428-4073 and pick his brains.  He's fairly helpful.

Some one dropped me a note to the effect that he runs his at 19200, but
once it is changed, if it doesnot work, you can't rechange it.  Remember
that switch position 0 is 1200 buad ps, and it is FIXED.  You cannot overide
the baudrate here.   You always can get in and change the baudrate through
this switch setting.  Then changing it to 1, will allow you back at the reset
baud rate.  If you have a paralell, you can also change the baudrate through it.

> 
> Cheers
> Woody