Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!van-bc!rsoft!mindlink!a513
From: Rick_Vandenberg@mindlink.UUCP (Rick Vandenberg)
Newsgroups: comp.os.msdos.misc
Subject: Re: Question: only 639K available to DOS?
Message-ID: <4879@mindlink.UUCP>
Date: 21 Feb 91 19:15:46 GMT
Organization: MIND LINK! - British Columbia, Canada
Lines: 17

> xaandrews@levels.sait.edu.au writes:
> 
>         Anybody come across the problem of only having 639K available to DOS?
> The DOS MEM command reports only 654 366 bytes available instead of 655 360.
> 
>         My machine is an IBM AT compatible '386 with 640K conventional
> memory (supposedly) and 2048K extended. It has a Phoenix 80386 ROM BIOS PLUS,
> Version 1.10 03. It runs MS-DOS 4.01 operating system.
> 


Some BIOSes can be set to use 1K for their stack. That would leave only 639K.
It has nothing to do with device drivers or TSR's. They wouldn't affect the
amount of memory available, just the amount left.

Rick Vandenberg
Vandenberg Systems Research