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TI-99/4A

Hacker Approved

Recommended for nostalgia, a well-written BASIC manual and a first taste of programming; critics say its cost-optimised design hobbled performance and its 16KB of memory is very limiting.

Summarized from 40 comments.

Recommended for nostalgia, a well-written BASIC manual and a first taste of programming; critics say its cost-optimised design hobbled performance and its 16KB of memory is very limiting.

recommend
26
criticize
8
months recommended
6 of 13

Why people love it

What people warn about

  • Weak design hobbled performance · 4

    TI's implementation of the concept in that particular cost-optimised home computer was pretty bad

    Feb 2026 · comment

    the 99/4a was brutally hobbled by some bizarre design choices that nerfed its performance

    Jan 2026 · comment

    it was designed as a game console and tried to pass up as a computer

    Jan 2026 · comment
  • Tiny memory, least capable machine · 3

    It gets worse because the TI99 only has 256 bytes of RAM directly addressable on its 16-bit bus.

    Feb 2026 · comment

    makes the system probably the least capable machine of the era

    Feb 2026 · comment

    the 16kb of working memory is going to be a struggle

    Feb 2026 · comment

What hackers pick instead

Every quote

The 35 most detailed of 40 comments. Each links to the original.

  1. TI's implementation of the concept in that particular cost-optimised home computer was pretty bad

    Mixed · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  2. the 99/4a was brutally hobbled by some bizarre design choices that nerfed its performance

    Mixed · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  3. The included manual for programming BASIC was extremely well written

    Mixed · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  4. I LOVE the Ti99/4a, its one of the first computers I ever used.

    Recommends · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  5. I suddenly remembered why I loved programming to begin with

    Recommends · Oct 2026 · in “Recreational Programming”

  6. I love reading about classic machines like the TI 99/4A.

    Recommends · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  7. the 16kb of working memory is going to be a struggle

    Mixed · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  8. Really brilliant system, turtles all the way down.

    Recommends · Dec 2025 · in “The Port I couldn't Ship”

  9. What impresses me about the TI 99/4A is that PLATO

    Recommends · Jan 2026 · in “The Home Computer Hybrids: Atari, TI, and the FCC”

  10. maximum love to the weird uncle of home computing

    Recommends · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  11. so limited even for the era, but still iconic

    Mixed · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  12. This was my first computer too! I loved it

    Recommends · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  13. Lots of memories learning programming

    Recommends · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  14. it made me what I am today!

    Recommends · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  15. It gets worse because the TI99 only has 256 bytes of RAM directly addressable on its 16-bit bus.

    Criticizes · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  16. it was designed as a game console and tried to pass up as a computer

    Criticizes · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  17. makes the system probably the least capable machine of the era

    Criticizes · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  18. know of the limitations of its weird design

    Criticizes · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  19. The company sounds like a complete disaster. No, there was no arrogant strategy. There was no strategy.

    Mixed · Jan 2026 · in “The Home Computer Hybrids”

  20. The TI-99 is such a perfect fit for this too given the chip was designed for multi-user computing

    Recommends · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  21. turning it on and getting a BASIC prompt was real cool. never could save anything, though.

    Mixed · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  22. Though fun, it doesn't get used very much unless I'm playing old game cartridges.

    Mixed · Aug 2026 · in “TI-74 Basicalc”

  23. Tape save and load seemed pretty reasonable on our system.

    Recommends · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  24. they still work as well as they did in the '80s

    Recommends · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  25. What a mercurial beast of thing that was.

    Mixed · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  26. It worked out pretty well really.

    Mixed · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  27. Unfortunately, no cassette drive.

    Mixed · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  28. So it is not easy to program.

    Mixed · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  29. why pick the more expensive, state of the art 16-bit CPU* that you're getting little or no benefit from

    Criticizes · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  30. it was a lot better than the keyboard on its predecessor, the TI-99/4 (no 'A')

    Criticizes · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  31. a drop in the bucket compared to my friend's Apple ][. Alas.

    Criticizes · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  32. Just use a Z80 instead of whatever mess they were using.

    Criticizes · Jan 2026 · in “TI-99/4A: Leaning More on the Firmware”

  33. had a nerfed BASIC that was not only very slow

    Criticizes · Jul 2026 · in “I Owe My Life to the Commodore 64”

  34. The TI's keyboard wasn't great either

    Criticizes · Feb 2026 · in “UNIX99, a UNIX-like OS for the TI-99/4A”

  35. It solved the issues of the 99/4a

    Criticizes · Mar 2026 · in “AMD Am386 released March 2, 1991”

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