Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!wuarchive!texbell!merch!cpe!techsup!garyk
From: garyk@techsup.UUCP
Newsgroups: comp.sys.tandy
Subject: Re: Mysterious missing RAM in 1000TL
Message-ID: <15400015@techsup>
Date: 28 Nov 89 17:04:00 GMT
References: <7373@uokmax.ecn.uoknor.edu>
Lines: 21
Nf-ID: #R:uokmax.ecn.uoknor.edu:7373:techsup:15400015:000:1061
Nf-From: techsup.UUCP!garyk    Nov 28 11:04:00 1989


/* Written 11:26 pm  Nov 24, 1989 by uokmax.UUCP!mflawson in techsup:comp.sys.tandy */
/* ---------- "Mysterious missing RAM in 1000TL" ---------- */
I was recently dismayed to find that 64k in my 1000TL seems to be 'missing'.
In other words, only ~576k is reported by DOS, when I am supposed to have
640k.  
Does anyone know what is going on here?   I set up FILES and BUFFERS to the
minimum amounts, but that only got me a few k.  The only idea I have is that
the Tandy custom video chip is eating up some memory.  Will the 128k upgrade
remove this problem?  If not, it seems this computer is not truly PC-compatible.
Mike Lawson
mflawson@uokmax.uucp
/* End of text from techsup:comp.sys.tandy */

In the Tandy 1000 series the main memory is shared by the video section and DOS.
Depending on the video mode, DOS will have the amount of RAM available to
it reduced.  Adding the 128K upgrade to the 1000TL, 1000TL/2, or 1000TX will
reserve 128K of RAM for video and leave the ENTIRE 640K available for DOS.

			Gary Kueck
			{sys1:trsvax:texbell}!techsup!garyk