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From: dave@westmark.UUCP (Dave Levenson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Environment Space on DOS 3.1 and higher
Message-ID: <222@westmark.UUCP>
Date: Sat, 17-Oct-87 21:58:02 EDT
Article-I.D.: westmark.222
Posted: Sat Oct 17 21:58:02 1987
Date-Received: Mon, 19-Oct-87 03:43:50 EDT
References: <195@sidd.SanDiego.NCR.COM> <4330005@hpindda.HP.COM>
Organization: Westmark, Inc., Warren, NJ, USA
Lines: 25

In article <4330005@hpindda.HP.COM>, hardin@hpindda.HP.COM (John Hardin) writes:
> The environment space on DOS 3.2 may be set in the CONFIG.SYS file
> by specifying SHELL=COMMAND.COM/E:xxxx where xxxx represents the
> bytes of environment space as a decimal integer in the range of
> 160 to 32768.

> ...works for DOS 3.1, too, but it indicates a number of
> blocks of environment space rather than the number of bytes.
> I forget the block size, but I think it was on the order of
> magnitude of 100 bytes/block.

In MS-DOS 3.1 the argument after the e: option specifies the number
of paragraphs (16 bytes each) of environment space.
This was never documented for MS-DOS 3.1, so there may be cases
where it can't be trusted.  However, I use it reliably on AT&T's
MS-DOS 3.1 for the 6300, and I also use it with a generic MS-DOS 3.1
on a IBM XT-clone.  

I think the maximum environment size that can be specified for
MS-DOS 3.1 is 64 paragraphs, or about 1024 bytes.
-- 
Dave Levenson
Westmark, Inc.		A node for news.
Warren, NJ USA
{rutgers | clyde | mtune | ihnp4}!westmark!dave