The KC85/2 (https://floooh.github.io/tiny8bit/kc852.html https://floooh.github.io/tiny8bit/kc852.html) also only supported uppercase, AFAIK mainly because there

The KC85/2 (https://floooh.github.io/tiny8bit/kc852.html https://floooh.github.io/tiny8bit/kc852.html) also only supported uppercase, AFAIK mainly because there wasn't enough room left in ROM for the lowercase characters. The followup model KC85/3 (https://floooh.github.io/tiny8bit/kc853.html https://floooh.github.io/tiny8bit/kc853.html) added the lowercase characters though, and the KC85/4 changed the font for better readability (but IMHO aesthetically less pleasing than the KC85/3 font): https://floooh.github.io/tiny8bit/kc854.html https://floooh.github.io/tiny8bit/kc854.html ...and when connecting such a machine to a TV via antenna input, reading the KC85/3 lowercase characters was indeed a bit of guesswork.