Newsgroups: comp.sys.apollo
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!apollo!mandler
From: mandler@apollo.hp.com (John Mandler)
Subject: RE: /dev/pio1 and /dev/pio1.conf help?
Lines: 24
Message-ID: <1991Jun14.181355.17843@apollo.hp.com>
Originator: mandler@boris
Sender: netnews@apollo.hp.com (USENET posting account)
Nntp-Posting-Host: boris.ch.apollo.hp.com
Organization: Hewlett-Packard Company, Apollo Division - Chelmsford, MA
Date: Fri, 14 Jun 1991 18:13:55 GMT

>> herb@ajfcal.uucp (Herb Peyerl) writes
>> 
>> ... Now I find myself needing to hook up a QMS-810+ printer
>> to the parallel port on a 400t... I've used the information 
>> in /install/doc/apollo/os.10.3.release_notes and created the
>> file "/sys/node_data/etc/pio1.conf" with the appropriate information
>> from the release notes... However, the printer blocks when I send
>> a postscript document to the printer... ie: it blocks so bad, I
>> can only "sigp -b" the process... After that I have to shutdown 
>> the machine before I can attempt again... I can't locate where
>> the pio1.conf stuff is documented more fully... I'd like some 
>> descriptions of options there are and what the mnemonics mean...

        The problem is a centronics handshaking protocol which is different
        from the parallel port hardware handshake protocol.  After sr10.3
        we discovered a number of printers with this inconsistency , including the 
        QMS 810 . Patches 240 and 243, issued in March 1990, address this problem.
        Install this patch and edit your pio1.conf file to use NSTRB_ONLY handshake
        mode. pskq2 also addresses this problem and is the prefered solution. 

        John Mandler
        UTD East
        Hewlett-Packard Company, Apollo Division
---------------------------------------------------