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Tandy Radio Shack

Product designers at Tandy described the Tandy 600 as a machine with the features that users of the Model 100 and the model 200 most often requested: an 80-column screen, a disk drive, and more RAM.

Although powered by a CMOS version of the 8088 CPU, the Tandy 600 wasn't IBM PC compatible. It had a 80-column x 16 line LCD display, a built-in 3.5" floppy drive, an internal 300-baud modem and 32 KB of basic battery-backed RAM expandable up to 224 KB.

The Microsoft operating system was comprised of the System Manager that handled file management for the disk drive and Microsoft Works 1.2 which gathered five applications: Word, a word processor whose files were compatible with the PC version of Microsoft Word; Calendar, an alarm-driven appointment scheduler; File, a database manager; Telcom for driving telecommunications activity; and Multiplan, reportedly a "99.5 percent version" of the PC spreadsheet.

Custom applications could be placed in the ROM slot occupied by the Multiplan ROM. All of the applications placed in this slot - including Multiplan and the optional BASIC interpreter - could be copied onto disk then loaded in RAM

The Japanese-made Tandy 600 was a light and well designed machine. However, it quickly suffered from the competition of portable PC compatible systems and didn't sell well.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.
Please consider donating your old computer / videogame system to or one of our partners from anywhere in the world (Europe, America, Asia, etc.).


The Tandy 6000 never had Radio Shack or TRS-80 branding. The only portable that did was the Model 100. The 200, 102, and 600 were all Tandy-branded and did not have the word "Model" in their names either.

Sunday 6th August 2023

I have a Tandy 600 I''m looking to sell

Monday 2nd October 2017
Amy Martin (US)

A friend of mine found a brand new one in the original box with the plastic wrap still around it, in the back of a warehouse.

Monday 30th January 2017
Richard (United States)


NAME  600
MANUFACTURER  Tandy Radio Shack
TYPE  Portable
YEAR  October 1985
BUILT IN LANGUAGE  Optional BASIC interpreter ($129.95)
KEYBOARD  Typewriter-style, 72 keys with 10 function keys and cursor keypad
CPU  80C88, CMOS low-power version of the Intel 8088
SPEED  3.07 MHz
RAM  32 KB expandable up to 224 KB (96 KB modules)
ROM  160 KB
TEXT MODES  80 columns x 16 lines
GRAPHIC MODES  480 x 128 dots
COLORS  Monochrome
SIZE / WEIGHT  30.5 (W) x 30.5 (D) x 6.5 (H) cm / 4.5 kg
I/O PORTS  Parallel, Serial RS232, Phone line, expansion bus
BUILT IN MEDIA  3.5'' 360 KB floppy-disk drive
OS  Microsoft Works 1.2
POWER SUPPLY  NiCd batteries (last 10 hours) or AC power
PRICE  $1,599 to $2,398 with 224 KB of RAM (October 1985)

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