TI99/4a

TI99/4a

A fairly early entrant into the home computer scene, this machine was initially released in the UK as the TI99/4 with an NTSC-only video output. After realising that nobody in the UK had anything that could display NTSC pictures, the machine was re-released as the TI99/4a with a PAL video output.

Rather uniquely for its time, the machine used a 16-bit processor rather than the more common 8-bit ones.

Production of this machine was stopped in November 1983.

Specifications

ManufacturerTexas Instruments
Processor9900
Speed (MHz)3
Ram (KB)16
Ram expandable to (KB)72
ROM (KB)26
Sound3 channels
Keyboard typeTypewriter-style
Number of keys48
Dimensions (mm)381 x 259 x 71
Weight (g)1800
Interfaces
  • Expansion port(44 pin)
  • Cassette interface
  • Joystick interface

Reviews

Where possible I have tried to contact the sources of these reviews for permission to reproduce them here.

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