This week on the blog: I go close some gaps in my understanding of the capabilities offered by the TI-99/4A's firmware. Now that I've picked up a working knowledge of most of the underlying hardware, on the system itself and its successors, I can see a bit more clearly.
https://bumbershootsoft.wordpress.com/2026/01/17/ti-99-4a-leaning-more-heavily-on-the-firmware/
#retrocomputing #ti99_4a