The Tandy 1000 SX was similar to the Tandy 1000 (see this entry for more info about the Tandy 1000 series).
The difference with the original model 1000, is that the CPU (Intel 8088) can be set to two different speeds: 4.77 MHz and 7.16 MHz thus offering more speed than the original IBM PC on the same software. The SX also comes with more memory (384 KB) than the Tandy 1000 (128 KB).
Contributors: Derek McDonald (aka “Skel”)
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 Old-Computers.com or one of our partners.
I still have mine. It came with two floppy drives.
Monday 23rd November 2020
The 1000SX was the first DOS computer I owned...in 1992, when I bought it used. It was underpowered compared to new machines on the market, but it still worked (though 16kb of the 640kb didn''t, down to 624).
With an external 20MB HDD, a 3.5" drive raided from a 1000HX (and an adapter) and a 14.4K modem, I was able to do my comp sci work and other from home. It was good enough for logging in to the college''s VAX via Kermit, later for using Lynx on the local Freenet. I wouldn''t be able to live with it today, but I''m glad I had it at the time.
Tuesday 17th September 2019
Bob Dog (Canada)
Why do you guys talk in past tense? Mine is still played by my kids. Mine is seriously upgraded and maxed out. I debate all the time on restoring the yellow case, but I''m afraid if I completely tear it down, it won''t turn back on when I put it back together. There are some awesome mods available to use SD cards out there so you don''t need the floppies anymore. I learned to program on this computer in 1990.
Thursday 27th July 2017
Brent Goeller (United States)
Tandy Radio Shack
Full stroke keyboard, 90 keys, 12 function keys, numeric keypad
4.77 MHz / 7.16 MHz
Intel 8087 math. coprocessor available as an option
384 KB (up to 640 KB)
80 x 25 / 40 x 25
CGA/TGA, 160 x 200, 320 x 200, 640 x 200
16 foreground colours + 8 background colours
3 voices + 1 sound channel
SIZE / WEIGHT
354 x 290 x 97 mm / 31 lbs
keyboard, 2 x joysticks, RGBI color monitor video output, composite video output, lightpen port, parallel port, serial port, 5 internal expansion slots, audio output (mono)
BUILT IN MEDIA
one or two 5.25'' floppy disk drives (360 KB) 3.5
MS-DOS 3.22, DeskMate II and GW Microsoft Basic included with the system
Built-in power supply
memory expansions, internal modems, 20 MB hard disk, etc.