*BSD News Article 56336


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Question about Printing speed.
Date: 7 Dec 1995 22:06:02 GMT
Organization: Private BSD site, Dresden
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Message-ID: <4a7oga$jns@uriah.heep.sax.de>
References: <49vjvo$76g@news.map.com> <4a1uns$9bi@peabody.colorado.edu> <4a2gn1$707@news.map.com>
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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jay@map.com writes:

> I just saw a message a minute ago that mentioned this - they had to switch
> from interrupt mode to polled mode for the printer to work more quickly.

> I'll end up doing that first, I think, as it seems to be a popular
answer today. :-)

However, if that works, it basically proves that you've got poor
hardware.  (Either the parallel card, or the cable is dropping the
/ACK signal.)  By fixing the hardware, you will gain another 5 times
in printing speed.  (Been there, done that.  After being too lazy to
open the case for placing the jumper, i've attempted to use the driver
in polled mode first, but resorted to true interrupt mode rather
quickly.)

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)