alt Hacker News@UsagiElectric on YouTube has a series of videos on building a homebrew around the TMS9900 processor. Would be cool if a unix-like OS could be used on something like that, though sounds like this project is specifically targeting the TI-99/4A system.
The TI-99/4A was the first computer I owned as a teenager. I had used TRS-80s and Apple ][ at school. I eventually bought the expansion box and a couple of accessory cards (floppy disk drive, memory and RS232). It all went in the e-waste dumpster about 20 years ago during a move.
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I had one in grade school. Taught me the value of backups early in life. Spent all night typing in a game from a magazine. Started it without saving to tape first. It was so loud! Panicked and restarted the machine. Sadness ensued.
Replaced it with a C128-D. Didn’t get my first intel until I bought a 386 after graduating high school. Good times.
Same here - parents bought one for me in 1982, IIRC. By 1984 I had moved to Atari XL, but I'll always have a soft spot for the TI-99/4A, Extended Basic cartridge, speech synthesizer, cassette drive, etc.
My sister and I used to co-type programs from "Compute!". The times were so much simpler then..
TI-99/4A was my first computer as well. I still have two of them, and they still work as well as they did in the '80s. I graduated to an Apple ][GS which I still have as well, although it needs some TLC before attempting to boot it so as not to let out the magic smoke.