Tandy 1000 TX

The Tandy 1000 TX installed an 8 MHz 80286 and 640KB RAM in the expandable 1000 desktop architecture. Tandy Video II improved display compatibility while retaining the graphics and sound expected by home software.

Although its 8-bit expansion bus prevented it becoming a full AT-class computer, the TX offered a useful performance step for Tandy 1000 owners.

Notable Features

• Processing is provided by Intel 80286 at 8 MHz.
• The standard memory configuration was 640KB plus 128KB reserved for video.
• Display hardware provided Tandy Video II with sixteen-colour and 640 x 200 modes.

Historical Significance

• Although its 8-bit expansion bus prevented it becoming a full AT-class computer, the TX offered a useful performance step for Tandy 1000 owners.
• Storage-only and minor motherboard revisions are documented on this page rather than treated as separate products.

Collector’s Notes

• Confirm the catalogue number, processor, memory and drives because similar Tandy cases were sold in several configurations.
• Original DeskMate or system disks, keyboards, monitors and Radio Shack documentation add historical value.

Specifications

Technical Information
Name	Tandy 1000 TX
Manufacturer	Tandy
Launched	Thursday, January 1, 1987
Discontinued	1989
Launch Price	$1,199
Country	United States
CPU	Intel 80286 at 8 MHz
Units Sold
Operating System	MS-DOS 3.2 and DeskMate
I/O	RGB, printer, serial, joysticks and five 8-bit ISA slots
Keyboard	Separate Tandy keyboard
Storage	720KB 3.5-inch floppy with additional drive and hard-disc options
Sound	SN76496-compatible three-voice sound plus noise
Graphics	Tandy Video II with sixteen-colour and 640 x 200 modes
Display	External composite or RGB monitor; 80 x 25 text
ROM	PC-compatible BIOS
RAM	640KB plus 128KB reserved for video
CPU Speed	8 or 4.77 MHz