Texas Instruments TI-99 / 4A
The Texas Instruments TI-99 / 4A was a home computer that came on the market in June 1981.
The computer was connected to the television antenna input via a separate cabinet. Data was stored with a cassette recorder for which connections were on the device. There was also a joystick connector. Above the device was an expansion connector for which modules could be purchased. There were modules available for a chess program, for games or for a more comprehensive BASIC version with sprites. These modules could be plugged into a so-called peripheral box that also served to expand with a printer and other peripherals.
The disadvantage of the TI-99 / 4A was the lack of bitmap mode. From the BASIC interpreter there was no possibility to draw circles and lines. There was a possibility to create new characters themselves, so that small self-made graphics could be displayed.
Lastly, the TI-99 / 4A was dumped for a price below cost. There were a total of 2.8 million copies sold before production ceased in 1984. Technical data By TI-TMS9900-chip
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