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- Newsgroups: comp.os.os2.misc
- Path: sparky!uunet!spool.mu.edu!uwm.edu!linac!uchinews!quads!pynq
- From: pynq@quads.uchicago.edu (Jeremy Mathers)
- Subject: Re: Question about OS/2 emulated DOS, how it works???
- Message-ID: <1992Dec19.183854.14335@midway.uchicago.edu>
- Sender: news@uchinews.uchicago.edu (News System)
- Reply-To: pynq@midway.uchicago.edu
- Organization: D. J. Dougherty & Associates
- References: <28468@oasys.dt.navy.mil> <1992Dec14.074127.16842@netcom.com> <1992Dec18.190627.12697@cbnews.cb.att.com>
- Date: Sat, 19 Dec 1992 18:38:54 GMT
- Lines: 32
-
- In article <1992Dec18.190627.12697@cbnews.cb.att.com> shurr@cbnews.cb.att.com (larry.a.shurr) writes:
- ...
- >Hmmm... There's more to it than meets the eye. Logically, I would have
- >agreed with you, but I have found that in cases where I exit from a VDM
- >and later start another, I frequently get a complaint from nnansi.com
- >that there's already a copy of nnansi.com loaded! As if that wasn't
- >enough, it doesn't do it every time, just most of the time.
-
- Amazing. I have had this same problem - loading a TSR (QD). I assume
- that what is happening is that when you close a VDM, then re-open it,
- without doing anything in between, it basically just re-uses the same
- absolute memory locations, and doesn't clear them, so whatever signature
- string the TSR put there the last time, is still there.
-
- I think the overall solution is to make the TSR smarter about its
- installation check. All QD does is search memory (literally does a
- "for seg=0; seg<=0xFFFF; seg++) search seg:0-F) for its string. Very
- crude.
-
- >Now, I don't, offhand, see how anything from one VDM can survive termi-
- >nation of the VDM and appear in another, new VDM session, but there is
- >at least some indication that nnansi.com is still around between sessions.
-
- I think it does...
-
- ************************************************************************
- La plus belle fille du monde ne peut
- donner que tout ce qu'elle a.
-
- - pynq@quads.uchicago.edu, who is still costing the net
- hundreds, if not thousands, of dollars, every time he posts -
- ************************************************************************
-