The Texas Instruments 99/4A
List Price: US $525
Release Date: June 1981
The TI-99/4A is a redesign of the TI-99/4 system, which was discontinued. The new “4A” has a new graphics chip and a better keyboard.
About the only way to expand the original TI-99/4A was from the expansion port on the right side of the console. Memory expansion, a serial interface, a floppy drive and other peripherals can be plugged in here for added capabilities.
TI released the Peripheral Expansion Box as a more convenient way to expand the TI-99/4A. It is huge, and of very solid and high quality construction.
Introduced in January 1982, the Peripheral Expansion Box cost $1475.00, including:
- Disk controller card and one SS/SD floppy drive
- RS-232 interface card
- 32K memory expansion card