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Tandy 2000

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Early Intel and Zilog CPU

based portable personal



TRS-80 Model I

TRS-80 Model III

TRS-80 Model IV

Color Computer

Color Computer 2

Color Computer 3



Early ultra-light personal

computers based on Intel

and Zilog CPU's.  These

units are all unique in

their class.

TRS-80 Model II

Tandy Model 12

Tandy Model 16, 16b



Once again systems

caught between CPU


TRS-80, Tandy 2000

Tandy 1200

MC 10



Simply the best personal

computers built. 

Operated under MS-DOS

2.11 to 6.22.  Based on

the IBM PC. Jr.

Tandy 1000, 1000a

Tandy 1000SX ,1000TX

Tandy 1000 SL,TL & TL2

Tandy 1000EX, 1000 HX

Tandy 1000 RL, RLX

Model:  Tandy 2000

CPU: Intel 80186 @ 8 Mhz.

RAM: 256K (Expandable to


Ports: Printer &  Serial

Display: 16 Colors 640 x 480

Graphics or Mono Hercules

Storage: Two 5.25" 768K

Floppies, One 5.35" 768K


& One 10MB. Hard Drive.

Operating System: TRUE MS



What do you get with a

computer ahead it it's



Answer:  Useless. 


This is what happened with the Tandy 2000 and not just Tandy Corporation this occurred

to many manufacturers who built a system on the Intel 80186 CPU.    The 80186 cpu

featured new instructions and new fault tolerance protection.  Tandy built the 2000 with

advanced color graphics, and a desktop with Intel 16bit processing at 8 Mhz.  It was a very

good computer as far as construction it was just built around the wrong CPU.  The Tandy

2000  by many was considered the first AT style computer in North America.  A bold and

risky move by Tandy.  Equipped with two 5.25" 720K floppy drives the unit was a real

piece of work.  The problem; nobody wrote software for the 80186.  Microsoft provided a

TRUE MS-DOS for an operating system which was real proprietary programming.  All other

units including the Tandy 1000 operated on what was essentially PC-DOS, Microsoft's

operating system written for the IBM-PC platform.  The Tandy 2000 was a superior

product, but very short lived.  Within 2 months of it's release the 80286 CPU hit the market

and the rest is history.


Tandy wasn't the only casualty of the 80186.  Other computers were built on that format

including many from Europe that were marketed with the CP/M operating system.  The

same problem occurred.  If you had a machine based on those systems the only thing that

could run on them were the CP/M operating system, at least with

MS-DOS you some applications.  The following are a

couple of those manufacturer who jump onto the 80186



The Compis


The Telenova Compis computer was originally designed

to be used in the Swedish school system. It featured a

80186 cpu and used CP/M 86. shortly after it's release

Svenska Datorer AB (Swedish Computers AB) went

bankrupt. Further development of the Compis was taken

over by the state-owned Televerketīs company TeleNova

that invested large amounts of money in the project.


The Dulmont Magnum


This is probably the exception to the rule.  Much like the

Tandy 200 the Dulmont Magnum belongs to the first

family of notebook computers with an LCD screen (not

yet back-lighted). It was manufactured in Australia and

known as the Kookaburra (an Australian bird)  Much like

the Tandy 200 and 100 series it was preloaded in ROM:

word processor, spreadsheet, telecommunication, file

manager, and appointment. Additional ROM software

could be added thanks to two 128 KB cartridge slots. The

Magnum was a TRUE MS-DOS compatible system

featuring the infamous Intel 80186 processor, 96 KB of

RAM, an 8 line LCD screen and several management





(c) 2004, 2005 Brian K. Hahn

 All Rights Reserved.