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From: jrv@siemens.UUCP
Newsgroups: net.micro.pc
Subject: Re: Intel Above Board for AT/ DESQVIEW !
Message-ID: <23900030@siemens.UUCP>
Date: Thu, 17-Jul-86 08:44:00 EDT
Article-I.D.: siemens.23900030
Posted: Thu Jul 17 08:44:00 1986
Date-Received: Sun, 20-Jul-86 05:04:28 EDT
References: <338@gumby.UUCP>
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Nf-ID: #R:gumby:-33800:siemens:23900030:000:1037
Nf-From: siemens!jrv    Jul 17 08:44:00 1986



Levine@YALE.EDU write:
>Each program that uses EMS asks for some expanded memory, usually when
>it starts up.  There is no practical way to give expanded memory back
                         ^^^^^^^^^^^^^^^^
>short of exiting a program, ...

From the point of view of a user this is true. From the programmers point
of view this is not entirely true. If the expanded memory is no longer needed
there is a function in the EMS to close the EMM handle and deallocate the
pages of memory. Also, there is no reason that a single application
could no call the memory handler and get several EMM handles as the need
arises. Releasing them individually when no longer needed. The specification
*suggests* that each application may one request at the beginning of the
program, though this is not a requirement. There is no way to release a
portion or increase the size of memory allocated once the EMM handle has
been gotten.


Jim Vallino
Siemens Research and Technology Lab.
Princeton, NJ
{allegra,ihnp4,seismo,philabs}!princeton!siemens!jrv