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From: mattl@ritcsh.cs.rit.edu (FaceMan)
Newsgroups: comp.sys.tandy
Subject: Re: Mysterious missing RAM in 1000TL
Summary: Answer
Keywords: RAM, expansion, 1000TL
Message-ID: <465@ritcsh.cs.rit.edu>
Date: 30 Nov 89 15:55:52 GMT
References: <1989Nov25.052630.7373@uokmax.ecn.uoknor.edu>
Distribution: na
Organization: Computer Science House @ RIT, Rochester, NY
Lines: 19

In article <1989Nov25.052630.7373@uokmax.ecn.uoknor.edu>, mflawson@uokmax.ecn.uoknor.edu (Michael F Lawson) writes:
> 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. [ text deleted ]                                                       
> 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.

You hit the nail right on the head. In order for the Tandy 1000TL to have a
video memory, it needs 128k. Without the 128k upgrade, it "steals" this 128k
from your main memory. So if you don't buy the 128k from Tandy, you're up
a creek.....

-- 
You can lead a horse to water.     | Matthew         | mattl@ritcsh.cs.rit.edu
But if you can get him to          |    "FaceMan"    | mal6315@ultb.isc.rit.edu
lie down on his back and float,    |         Lecher  | mal6315@ritvax
you've really got something there! |=================|=========================