Path: utzoo!attcan!uunet!super!mjt
From: mjt@super.ORG (Michael J. Tighe)
Newsgroups: comp.sys.misc
Subject: Re: TRS-80 Questions
Message-ID: <12843@super.ORG>
Date: 12 Aug 89 16:32:00 GMT
References: <8908102238.AA12720@lognet2.af.mil> <5650@ficc.uu.net>
Sender: news@super.ORG
Reply-To: mjt@super.UUCP (Michael J. Tighe)
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Organization: Supercomputing Research Center, Lanham, Md.
Lines: 20

In article <5650@ficc.uu.net> peter@ficc.uu.net (Peter da Silva) writes:
> The model II was a business computer, and did quite well. It ran TRS-
> DOS and CP/M. It was the basis for the model 16 (the first 68000-based
> TRS-80, basically a model II with a coprocessor card).
 
The Model II used the Z-80 chip. The Model 16 used the 68000, and had
a Z-80 for I/O.
 
> The model IV was a repackaged model III, in the new cream box instead
> of the ugly silver.
 
Both the Model III and Model IV used the Z-80 chip. the III ran at 2
Mhz, while the IV ran at 4Mhz. The III had a 64x16 screen, with a
maximum of 48K RAM. The IV had a 80x24 screen, and could handle 128K
RAM using bank switching.
-- 
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Michael Tighe
internet: mjt@super.org
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