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.
- Manufacturer
- Texas Instruments
- Processor
- 9900
- Speed (MHz)
- 3
- RAM (KB)
- 16
- RAM expandable to (KB)
- 72
- ROM (KB)
- 26
- Sound
- 3 channels
- Keyboard type
- Typewriter-style
- Number of keys
- 48
- Dimensions (mm)
- 381x259x71
- Weight (g)
- 1800
- Interfaces
- Expansion port (44 pin)
- Cassette interface
- Joystick interface
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