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From: carolyn@cbmvax.cbm.UUCP (Carolyn Scheppner CATS)
Newsgroups: comp.sys.amiga
Subject: Re: Printer bug
Message-ID: <1793@cbmvax.cbmvax.cbm.UUCP>
Date: Thu, 30-Apr-87 11:17:23 EDT
Article-I.D.: cbmvax.1793
Posted: Thu Apr 30 11:17:23 1987
Date-Received: Sat, 2-May-87 14:40:43 EDT
References: <1610@rutgers.RUTGERS.EDU>
Reply-To: carolyn@cbmvax.UUCP (Carolyn Scheppner CATS)
Organization: Commodore Technology, West Chester, PA
Lines: 37

In article <1610@rutgers.RUTGERS.EDU> RFORSTER@UNCAEDU.BITNET writes:
>From: <RFORSTER%UNCAEDU.BITNET@wiscvm.wisc.edu>
>
>Subject: printer device bug (I think)
>[]
>It seems that the printer device keeps using something in the messages
>you send it EVEN AFTER it has replyed to them! I was trying to abort a
>graphics dump that had been started by the dump raster port command and
>which was in the process of writing on the printer with either the
>FLUSH, AbortIO(), or RESET commands (I tried all three ways separately)
>and kept getting unpredictable GURUs.  I say unpredictable because
>sometimes the abort would work and I could sometimes do several attempts
>aborting each one successfully, however eventually I would get a
>VISITATION.
>[]

   There may be problems in the printer's handling of aborted requests,
but the GURU should only be visiting if you failed to remove the request.

   To abort an asynchronous (SendIO()'d) printer request, try:

   if(!Checkio(ioreq))
      {
      AbortIO(ioreq);
      }
   WaitIO(ioreq);  <--- Removes the request

   Your GURU problems should disappear.  Unfortunately, some memory will
also disappear since the current printer.device is unable to de-allocate
graphic buffers when a DUMPRPORT request is aborted.

-- 
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Carolyn Scheppner -- CBM   >>Amiga Technical Support<<
                     UUCP  ...{allegra,caip,ihnp4,seismo}!cbmvax!carolyn 
                     PHONE 215-431-9180
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