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From: veit@borneo.gmd.de (Holger Veit)
Subject: Re: Got info on lpt, lpa
Message-ID: <1993Jul5.210431.26714@gmd.de>
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Organization: GMD - German National Research Center for Computer Science
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References: <219sba$9ld@sylvester.cc.utexas.edu>
Date: Mon, 5 Jul 1993 21:04:31 GMT
Lines: 29
>Hey, I got more info on my lpt/lpa problem. Whenever the cable is in,
>the lpt0 and lpa0 messages don't appear at bootup. But, if I unplug
>the printer cable, they show up during the boot process. I can't figure out
>why this might be; does anyone else know? I have an HP LJ II as my printer,
>and it works fine under DOS/Windows. Any information would be appreciated.
>Note: even if the printer is off, as long as the cable is in both the 'puter
>and the printer, lpt0 will not be acknowledged. I haven't tried unplugging
>it from the printer, as that seems kind of silly, since I can just turn
>the printer off. It may not be (silly).
Are you sure you have a full standard centronics cable? With *all*
lines connected and proper shielding? I also thought I'd have one
(it worked wonderful with my Epson LQ, under DOS and 386bsd), until I
connected a LaserJet 4L to my system. It didn't properly respond
(the LJ 4L can reply to the computer via return status lines with
a proprietary protocol), and I found that the cable was missing 2 lines
and two others incorrectly connected. There seem to be several
types of suspicious cables out there; I had one that at least worked
under normal circumstances; your's might be connected wrong in a
different way. There might be probably a short between ground and
a not frequently used status line.
--
Dr. Holger Veit | INTERNET: Holger.Veit@gmd.de
| | / GMD-SET German National Research | Phone: (+49) 2241 14 2448
|__| / Center for Computer Science | Fax: (+49) 2241 14 2342
| | / P.O. Box 13 16 | Had a nightmare yesterday:
| |/ Schloss Birlinghoven | My system started up with
53731 St. Augustin, Germany | ... Booting vmunix.el ...