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From: slerner@sesame.UUCP (Simcha-Yitzchak Lerner)
Newsgroups: net.micro.pc
Subject: Re: Does DOS listen to LaserJets?
Message-ID: <235@sesame.UUCP>
Date: Thu, 1-Aug-85 19:48:20 EDT
Article-I.D.: sesame.235
Posted: Thu Aug  1 19:48:20 1985
Date-Received: Sat, 3-Aug-85 20:41:11 EDT
References: <596@alberta.UUCP>
Distribution: net
Organization: Lotus Development Corp
Lines: 25

> Does anybody out there have an HP Laserjet printer hooked up to their
> PC/XT/AT?  If so, does DOS notice when the printer hangs? The specifics :

The problem, as mentioned later in the article, is that the HP LJ needs
xon/xoff support from the host, which PC-DOS doesn't provide.  The solution
is to look into print spooler s/w, and find one that support xon/xoff serial
output.  (Or you can write a resident routine to sit on the print BIOS
interupt and handle printing w/ xon/xoff if you want to put in the effort)

Some ibm-compatibles (I believe the TRS) have extensions to the BIOS
that allow the port initialization call to enable/disable xon/xoff 
protocol.

Good luck.

-- 
Opinions expressed are public domain, and do not belong to Lotus
Development Corp.
----------------------------------------------------------------

Simcha-Yitzchak Lerner

              {genrad|ihnp4|ima}!wjh12!talcott!sesame!slerner
                      {cbosgd|harvard}!talcott!sesame!slerner
                                slerner%sesame@harvard.ARPA