Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!UNC.BITNET!UNCSPL
From: UNCSPL@UNC.BITNET ("Scott P Leslie")
Newsgroups: comp.sys.atari.st
Subject: Re:  Screen Dump
Message-ID: <8903260504.AA25409@ucbvax.Berkeley.EDU>
Date: 26 Mar 89 05:03:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 11

Regarding ALT-HELP to save a file:
   A few months ago I hacked up a Vertical Blank Interrupt routine
that checked the status of the system variable _dumpflag at location
$4ee.  My routine was executed before the systems routine to do the
screen dump, and it checked to see if a printer was connected.  If
the printer wasn't on (or whatever) it fixed the flag to say that
the user really didn't want a screen dump.  Using a VBI would
probably be the easiest way to do what you want.  If you (or anyone)
would like to get the code for the VBI, send mail and I'll find it.
--
Hope this helps, Scott P. Leslie (UNCSPL@UNC)