Toshiba T3100

T3100 was a portable PC manufactured by Toshiba and released in 1986. It featured a 10 MB hard drive, 8 MHz Intel 80286 CPU and a black & orange 9.6" gas-plasma display with a resolution of 640x400 pixels.[1]

Toshiba T3100
Release date1986; 34 years ago (1986)[1]
Operating systemMS-DOS 3.2[1]
CPUIntel 80286 @ 8 MHz[1]
Memory1024 kB RAM (upgradable to 5 MB)[1]
Storage10 MB hard drive; internal 3,5" floppy drive, 720 kB; connector for external 5,25" floppy drive, 360 kB[1]
Displaymonochrome 9.6" orange gas-plasma display[1]
Graphics640×400; 640×200; Textmode: 80×25; T3100SX: 640x480 VGA
Inputkeyboard - 83 keys, QWERTY
Connectivityexternal monitor via 9-pin RGB port.[1]
Dimensions0.310 x 0.361 x 0.079 meter[1]
Mass7.5 kg
In Japan, the Japanese version of T3100 was marketed as J-3100.

The portable had for the time a special high-resolution 640 x 400 display mode which is similar to and partially compatible with the Olivetti/AT&T 6300 graphics.[1] There's a single proprietary expansion slot for 1200 bit/s modem, expansion chassis for 5x 8-bit ISA cards, Ethernet NIC, 2400 bit/s modem, and a 1 MB memory card (thus 3.6 MB in max total).[1] The base model had 1MB of memory, which could be upgraded to 5MB.[2][3]

Toshiba T3100 was not a true portable, because it needed an external power source in all except the last version.

Five versions existed:

  • The T3100/20 was essentially the same as the base T3100 but with a larger hard drive (20 MB instead of 10 MB).
  • The T3100e had a 12 MHz 80286 CPU (switchable to 6 MHz, 1 MB RAM and a 20 MB hard drive.[4]
  • The T3100e/40 was the same as the T3100e, but with a larger 40 MB hard drive.
  • The T3100SX had a 16 MHz i386SX CPU, 1 MB RAM and a 40 MB or 80 MB hard drive, a VGA 640x480x16 shade black & orange gas plasma display or black & white LC, and also included an internal rechargeable battery, for true portability.[5]

In Japan, the Japanese version of T3100 was marketed as J-3100.


BYTE in 1989 listed the T3100/20 as among the "Distinction" winners of the BYTE Awards, citing its "amazingly clear" display and hard drive.[6]

See alsoEdit


  1. ^ a b c d e f g h i j k "Toshiba T3100". Retrieved 2016-04-11. T3100, released in 1986, consisted of an 80286 CPU running at 8MHz, but could be slowed to 4.77MHz using a keyboard shortcut. It also had 640KB system memory, which could be upgraded to 2.6MB. It shipped with MS-DOS 3.2.
  2. ^ "T3100e product brochure" (PDF). Archived from the original on 2004-05-15. Retrieved 2017-10-10.CS1 maint: BOT: original-url status unknown (link)
  3. ^ "Toshiba T3100e Memory Upgrade". Retrieved 2019-08-16.
  4. ^ "Manual" (PDF). Retrieved 2019-08-16.
  5. ^ "Maintenance Manual" (PDF). Retrieved 2019-08-16.
  6. ^ "The BYTE Awards". BYTE. January 1989. p. 327.

External linksEdit