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From: Bogus AT Embarq DOT com (Steve)
Newsgroups: comp.os.msdos.djgpp,comp.os.msdos.programmer
Subject: Re: DJGPP Setup?
Date: Thu, 26 Mar 2009 12:24:02 +0000 (UTC)
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"Benjamin David Lunt" <zfysz AT frontiernet DOT net> writes:
>
>However, I don't know if there is still a limit in the DOS
>internals or not.  I would guess you have to call an undocumented
>DOS service (3.3x or higher) to tell DOS that you have
>moved the Handle Array and it is now larger.
>

Hi,

   The Microsoft MS-DOS Programmer's Reference", Version 5,
has a comment on increasing the number of handles for a
process (pg 27).  Part of which is as follows.

"MS-DOS also imposes a limit of 20 on the number of file
handles available for individual programs"
..
"If more handles are needed, a program can increase its
own limit by using Set Maximum Handle Count "..."Increasing
the number of handles does not increase the number of
open files."

(pg 384) Fn 67H
"This function sets the maximum number of handles for the
program but does not change the number of handles
available in the system."

   "Undocmented DOS" 2nd ed. says on page 742.
"Although documented, this function is included because of
a bug in early releases.  This function is used to increase
the per-process limit on open files beyond the default limit
of 20 files."

   Excuse any typos.

HTH,

Steve N.