> Anyway, because of that, Z80 assembly was my second programming language TI Basic being the first. I didn't have the cable you needed to transfer binaries fr

> Anyway, because of that, Z80 assembly was my second programming language TI Basic being the first. I didn't have the cable you needed to transfer binaries from a desktop computer to the calculator, and I never finished the cable I tried to build myself from scrap parts. Hence, I never got past the TI Basic, which you could program on the calculator itself. :-) Here's a TI Basic rendering of a sphere (the Moon seen from Earth, say): https://i.imgur.com/xWb1xk2.jpg https://i.imgur.com/xWb1xk2.jpg