The TI-99/4 and TI-99/4A are home computers released by Texas Instruments in 1979 and 1981, respectively. [2] Based on Texas Instruments's own TMS9900 microprocessor originally used in minicomputers, the TI-99/4 was the first 16-bit home computer. [3]

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When the TI-99/4A was introduced in 1981, Texas Instruments claimed it was both "a major breakthrough in computer technology," and, probably more important, the "lowest priced, 16-bit computer available."

The TI-99/4 A 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.

A site dedicated to the classic 1980's home computer, the TI-99/4A. FAQ, links, AVI's, emulators, screen saver and theme, history, equipment sources, more!

The Texas Instruments TI-99/4A was an early home computer, released in June of 1981. The computer holds the distinction of being the first 16-bit personal computer, having a 16-bit TMS 9900 CPU running at 3.0 MHz. For a full description of the system, see this comprehensive Wikipedia entry.

May 11, 2021 · The TI-99/4A remained mostly the same as its predecessor, with the major changes being a full-travel keyboard to replace the calculator-style keys, an improved graphics chip with support for bitmap modes, and a cleaner method of adding expansion cards.

The TI-99/4A was the first computer I ever used. My parents purchased one around 1983 or 1984 and presented it to the family as a Christmas present that year. Although we used it mainly as a gaming console, we also used it to dabble with programming.

May 11, 2021 · 32 single-color sprites in defined layers allowing higher-numbered sprites to transparently flow over lower-numbered sprites. Sprites are available at 8×8 pixels or 16×16 pixels, with a “magnify” bit that doubled all sprites’ size but not their resolution.