I have some of the TI-99/4A stuff that I had as a kid (and a few machines), but now I notice that the hardware is notoriously undocumented. Compare to something

I have some of the TI-99/4A stuff that I had as a kid (and a few machines), but now I notice that the hardware is notoriously undocumented. Compare to something like the TRS-80 Model 100, which has full schematics and even a book written about things like how to write 8085 assembly to get the PIO chip to buzz the buzzer[1]. I have read that TI was very un-hobbyist/tinkerer and suffered in the market as a result. For another era of stuff that I used growing up, PCs were by then complex enough (286/386/486 era) and/or commoditized enough that the systems weren't well documented. [1] https://archive.org/details/HiddenPowersOfTheTrs80Model100 https://archive.org/details/HiddenPowersOfTheTrs80Model100