sounds like the Commodore 64 I had or something similar, everything was in basic...I would buy magazines at the book store and type in pages of codes.....tandy also had a very popular model at the time that I can't remember the name of.....same idea, giant keyboard plugged into back of tv... I had color, but not sure if there were variants....Now I play with Linux distros.  and anything that promotes privacy or freedom. I only recently found Nostr...I dig the mobility of the npub.. good luck.