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From: paul@uninet.cpd.com (Paul Hammond)
Newsgroups: comp.sys.next
Subject: Re: Printer Drivers
Keywords: HP Deskjet, serial/parallel
Message-ID: <1991Apr24.174732.4861@zardoz.cpd.com>
Date: 24 Apr 91 17:47:32 GMT
References: <9104140516.AA03455@epsoft> <1991Apr18.155842.16132@bernina.ethz.ch>
Sender: sales@cpd.com
Organization: Uninet Peripherals, Santa Ana, CA, USA
Lines: 52

In article <1991Apr18.155842.16132@bernina.ethz.ch> waldvoge@nessie.cs.id.ethz.ch (Marcel Waldvogel) writes:
>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...
 


We at Uninet have just finished our port of the SLAT-1 to the NeXT
workstations. The SLAT-1 provides additional serial and parallel ports
to the NeXT. The SLAT-1 attaches to the NeXT on the SCSI bus,
co-exists with all other SCSI devices and requires NO modifications to
either the system or applications software. Serial ports can be set up
at speeds to 57.6k while the parallel port provides output at 28,000 cps.

For more informatin please email at sales@cpd.com or call 714 546 1100


 
>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
>Eschenweg 7      | 8057 Zuerich                  | domain. No donation required!
>
>
>
>-- 
>
>Tschuess, Marcel
>--
>Marcel Waldvogel | waldvoge@nessie.cs.id.ethz.ch | This message is in the public


--
Paul Hammond     paul@cpd.com     (714)546-1100     FAX (714)546-3726
Uninet Peripherals, 1209 E. Warner, Santa Ana, CA  92705