I had a lot of fun with a TRS80 Model 4D when I was a kid. The article actually has the "text mode graphics" resolution wrong. There were characters divided 2x3

I had a lot of fun with a TRS80 Model 4D when I was a kid. The article actually has the "text mode graphics" resolution wrong. There were characters divided 2x3 blocks so you could divide the 80x24 character screen into 160x72 ”pixels” natively, without the extra hardware used in the article. Since characters were simultaneously available at the full hi res of the screen, this allowed me to make a pretty nice looking rouguelike style game. Text heavy, but using the block pixels for walls and some limited graphics effects.