Path: utzoo!attcan!uunet!seismo!sundc!pitstop!sun!decwrl!nsc!misha
From: misha@nsc.nsc.com (Michael Umansky)
Newsgroups: comp.sys.ibm.pc
Subject: PC DOS memory usage
Message-ID: <7123@nsc.nsc.com>
Date: 19 Oct 88 00:35:32 GMT
Organization: National Semiconductor, Sunnyvale
Lines: 27

I am trying to find out how is the base 640k of memory is used by
DOS when it boots but before executing anything from the prompt.

How do I find out where the first available memory block is and
how long is it (contiguous)?

I know that transient portion of COMMAND.COM is loaded at the
top of 640k, but how can I tell how much it used -
another words, what is the last available memory address/block?

Also, where is DOS's stack while it is running?

I remember seeing most of this information is some older DOS
manuals, but I can't find anything useful in either DOS 3.x USER MANUAL
or TECHNICAL REFERENCE.
Thanks for any pointers.
misha
---
NAME:	Michael Umansky; {amdahl|decwrl|hplabs|pyramid|sun}!nsc!misha
WORK:	National Semi; 2925 Copper Road; MS/7C266; Santa Clara, CA  95051
HOME:	4331 Lincoln Way; San Francisco, CA  94122
PHONE:	(408) 721-8109 (work); (415) 564-3921 (home)
-- 
NAME:	Michael Umansky; {amdahl|decwrl|hplabs|pyramid|sun}!nsc!misha
WORK:	National Semi; 2925 Copper Road; MS/7C266; Santa Clara, CA  95051
HOME:	4331 Lincoln Way; San Francisco, CA  94122
PHONE:	(408) 721-8109 (work); (415) 564-3921 (home)