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From: waldvoge@nessie.cs.id.ethz.ch (Marcel Waldvogel)
Newsgroups: comp.sys.next
Subject: Re: Printer Drivers
Keywords: HP Deskjet, serial/parallel
Message-ID: <1991Apr18.155842.16132@bernina.ethz.ch>
Date: 18 Apr 91 15:58:42 GMT
References: <9104140516.AA03455@epsoft>
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Organization: ETH Zuerich
Lines: 33
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In article <9104140516.AA03455@epsoft> mark@epsoft.UUCP (Mark Chamberlain) writes:
>One of the cutest printers around is a Hewlett-Packard Deskjet - now  
>whilst I agree that NeXT printers are cheaper than most, it would  
>still be nice to be able to use whats around (looking whats around my  
>office is 3 HP printers, LJ 3,  LJ 2, Deskjet Plus), and it would  
>make sense to write a driver for them.. the NeXT is doing all the  
>clever bits, a printer driver has (I guess) just got to throw a  
>bitmap at the printer.. hey presto, a Postscript Deskjet.

I calculated the time it takes to print out a 300 dpi graphics page (>
1 MB of data) as a bitmap at 19200 baud (the max. baud rate the
DeskJet+ knows about); this gives about 9-10 minutes, quite a lot. It
would be nice if workstation would have a parallel port, too...

Does anyone know of a source or a schematic to a high-speed (>= 38400
baud) serial/parallel converter to speed up the transfer to the HP DJ+?

By the way, the cabling to connect a DJ+ is non-standard: In
additon to a nullmodem cable (for a printer!) you need to exchange DTR
and RTS on the printer side.

-Marcel
--
Marcel Waldvogel | waldvoge@nessie.cs.id.ethz.ch | This message is in the public
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-- 

Tschuess, Marcel
--
Marcel Waldvogel | waldvoge@nessie.cs.id.ethz.ch | This message is in the public