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- Newsgroups: comp.os.msdos.desqview
- Path: sparky!uunet!psinntp!qdeck!garyrich
- From: garyrich@qdeck.com (Gary Rich)
- Subject: Re: How does Phar Lap DOS Extender 286 allocated its memory from QEMM?
- Organization: Quarterdeck Office Systems, Santa Monica CA
- Date: Mon, 21 Dec 1992 18:55:33 GMT
- Message-ID: <1992Dec21.185533.22172@qdeck.com>
- References: <1992Dec14.222004.594@midway.uchicago.edu> <1992Dec17.225657.3463@qdeck.com> <1992Dec18.203407.9691@midway.uchicago.edu>
- Lines: 43
-
- In article <1992Dec18.203407.9691@midway.uchicago.edu> pynq@midway.uchicago.edu writes:
- >In article <1992Dec17.225657.3463@qdeck.com> garyrich@qdeck.com (Gary Rich) writes:
- >...
- >>>However, when memory is allocated by the Phar Lap compiled application,
- >>>it does not show up in either of these tools. It does come off the
- >
- >Oops, I forgot about VCPI. Yup, VCPI memory does not show up in either
- >MAPMEM or EMS DIR. My mistake...
- >
- >There are those, BTW, who would argue with your statement that it is
- >better than DPMI (not me, mind you). Certainly, though, VCPI is much
- >more elegant and less intrusive than DPMI.
-
- Well, to hedge my own statement... the DPMI spec is a questionable
- implementation
- of a few actually good ideas. As it sits, there is the 0.90 DPMI spec that
- is what Windows 3.1 uses in enhanced mode (this is what QDPMI implements),
- there is the 0.95 type spec
- that Borland tends to write to, and there is the 1.0 DPMI spec that is the
- official one, but almost no current programs support........groan.
-
-
- >
- >>You should look at the VCPI memory specification, authored by our own
- >>Dan Spear and Bob Moot from Phar Lap and sponsored by AI Architechts, Lotus,
- >>Quadram, Qualitas <who?> and Rational Systems. Highly reccomended
- >>reading for anyone serious about programming.
- >
- >I am familiar with VCPI, and I agree that it is the way to go for
- >protected mode programs to co-exist with each other. Do you have an
- >address for obtaining said spec?
-
- Phar-Lap is, I'm told, the keeper of the paper. They should be reachable
- at
- (617) 661-1510
-
-
-
- --
- : Gary Rich : garyrich@qdeck.com
- :: for tech support- support@qdeck.com
- : : for info - info@qdeck.com
- :
-