Texas Instruments TI-99/4A

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Texas Instruments TI-99/4A
Texas Instruments TI-99/4A
Texas Instruments TI-99/4A
Texas Instruments TI-99/4A Start up
Texas Instruments TI-99/4A Playing JAWBREAKER II
Texas Instruments TI-99/4A Speech Synthesizer


Specifications

  • Model Texas Instruments TI-99/4A
    Type Home computer
    Released June 1981
    Processor TI TMS9900, 3MHz
    Memory 16K RAM, 26K ROM
    Media Cassette Tape drive
    Cartridge
    Sound 3 channels, 5 octaves, 1 noise
    Graphics 32 x 24 (16 colors), 40 x 24 (2 colors)
    192 X 256, 16 color graphics
    Ports ROM cartridge (on front)
    Data storage cassette
    Audio/Video output
    Joystick input
    CPU bus expansion
    Power Special TI external PSU
    Monitor -
    OS TI Basic

    Texas Instruments TI-99/4A

    The Texas Instruments TI-99/4A was an early home computer, released in June 1981, originally at a price of US$525. It was an enhanced version of the less successful TI-99/4 model, which was released in late 1979 at a price of $1,150. The TI-99/4A added an additional graphics mode, "lowercase" characters consisting of small capitals, and a full-travel keyboard. Read More