|Date Announced||1979 (shipping in 1980)|
|Number Produced||Tens to hundreds of thousands|
|Country of Origin||USA|
|ROM||8K + ROM cartridges|
|Expansion||External expansion chassis|
|I/O||Parallel, Serial (via optional expansion chassis)|
|OS Options||Proprietary TI, UCSD-p|
|Notes||The TI 99/4A was an advanced computer for its day with a 16 bit processor and advanced sound and graphics. Unfortunately it was too expensive to compete with the Atari 800 and, eventually, the Commodore 64. It was also badly marketed and supported by TI.|
|Related Items in Collection||Box, manuals, etc. The unit is pretty much new-in-box. A second TI 99/4A in poorer condition. Expansion chassis with disk drive, cartridges, etc.|
|Related Items Wanted||Additional disk drive, expansion options, software on disk, cartridges, TI cassette drive, TI monitor.|
Although The Texas Instruments TI 99/4a was a contemporary of the Apple ][, Atari 800 and much of the Radio Shack line it wasn't nearly as successful as those computers. One reason may have been its price, which was initially far higher then its competitors, when compared as equally capable systems.
I have two TIs in my collection. One is a nearly brand new, almost never used unit with its original box and documentation. The other is in less pristine shape but came with a TI expansion unit with with a floppy drive.
The later TI and expansion unit was donated by Pete Hansen.