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Path: utzoo!mnetor!seismo!rutgers!cbmvax!carolyn
From: carolyn@cbmvax.cbm.UUCP (Carolyn Scheppner CATS)
Newsgroups: comp.sys.amiga
Subject: Re: printer.device troubles
Message-ID: <1666@cbmvax.cbmvax.cbm.UUCP>
Date: Mon, 13-Apr-87 09:57:17 EST
Article-I.D.: cbmvax.1666
Posted: Mon Apr 13 09:57:17 1987
Date-Received: Sat, 18-Apr-87 18:37:34 EST
References: <871@vaxb.calgary.UUCP>
Reply-To: carolyn@cbmvax.UUCP (Carolyn Scheppner CATS)
Distribution: na
Organization: Commodore Technology, West Chester, PA
Lines: 38
Keywords: printer device SendIO

In article <871@vaxb.calgary.UUCP> candym@calgary.UUCP (Mike Candy) writes:
>
>(RE: Asynchronous printer dump)
>[]
>The first thing he attempted using to stop the printer dump was AbortIO,
>unfortunately there is very little documentation on this in the RKM and
>all he got were visits from the GURU. Does AbortIO work on the
>printer.device and if so how does one use it?
>

   /* Test of screen dump abort after 10 seconds */
   /* These lines replaced the DoIO(iodrp) */

   SendIO(iodrp);

   Delay(1000);            /* Replace with what you want to do here */

   if(!CheckIO(iodrp))  AbortIO(iodrp);       /* If not done, abort */

   WaitIO(iodrp);  /* This does some cleanup, removes request, etc. */

-------------------------------------------------------------------------
   Two things to note:

1. If you don't do the WaitIO(), the request is not removed and a 
   belated Printer Trouble requestor may appear, leading to a GURU.

2. Under 1.2, if you abort a graphic dump, the graphic buffer is
   never deallocated, leading to a memory loss (size dependent on printer)
   each time a dump is aborted.  Hopefully, a future re-write of the
   printer device will eliminate this problem.

-- 
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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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