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From: tim@ur-cvsvax.UUCP (Tim Takahashi)
Newsgroups: comp.sys.tandy
Subject: Re: Anyone got a Tandy 1000?
Message-ID: <648@ur-cvsvax.UUCP>
Date: Thu, 23-Jul-87 14:28:32 EDT
Article-I.D.: ur-cvsva.648
Posted: Thu Jul 23 14:28:32 1987
Date-Received: Sat, 25-Jul-87 07:48:24 EDT
References: <13938@watmath.UUCP> <720@aplvax.UUCP>
Distribution: na
Organization: Center for Visual Science, Univ. of Rochester
Lines: 35
Summary: Tandy 1000, et.al.

In article <720@aplvax.UUCP>, scoop@aplvax.UUCP (Steve Cooper) writes:
> In article <13938@watmath.UUCP> mdharding@watmath.waterloo.edu (Matt) writes:
> >I subscribed to this newsgroup hoping to learn more about my trusty 1000,
> >but all I'm reading is stuff about the model 1's, etc.
> >
> >So I'll ask a question - any knowledgeable person understand the differences
> >between a Tandy 1000 personal computer and an original IBM PC/XT? Having one
> >of the former, I'm interested as to why some programs don't work on my 1000
> >(only a few, however). Also, the new Tandy Dos makes disks not-readable on
> >non-Tandy machines. Why? No doubt it has to do with the BIOS or something,
> >I'd assume.      

The Tandy 1000 family, 1000, 1000A, 1000SX and 1000EX are IBM PC
 Software Compatible Machines - there are a lot of hardware differences
 as follows

 ----------------------- Processor Speed 8087? DMA  Expansion Slots
 -------------------------------------------------------------------
 IBM PC, PC/XT             8088   4.77MHz Opt.  Yes     7
 Tandy 1000                8088   4.77MHz NO    Opt.    3 (short)
 Tandy 1000A               8088   4.77MHz Opt.  Opt.    3 (short)
 Tandy 1000EX             8088-2  7.16MHz NO    Opt.    Proprietary
 Tandy 1000SX             8088-2  7.16MHz Opt.  Yes!    5 (short)
 
 In addition, all 1000's feature a PCjr compatible sound chip,
  and a CGA board conforming to PCjr specs. (more colors, video
  memory is part of user memory).
  
  All 1000's use Phoenix Compatibility BIOS roms for as much PC
  compatibility
  as their hardware differences will allow.
  
  Tim
  
  )