The Atari ST came with a 6x6 font, including spacing: https://fontstruct.com/fontstructions/show/876150/atari_st_6 https://fontstruct.com/fontstructions/show/87

The Atari ST came with a 6x6 font, including spacing: https://fontstruct.com/fontstructions/show/876150/atari_st_6 https://fontstruct.com/fontstructions/show/876150/atari_st_6 - 5x5 means no compromises required for upper case letters, which are all readable, and punctuation is intelligible. The liberties taken with lower case are probably acceptable. (Been years since I saw this font in situ so I'm not sure what it'd look like if you have two adjacent rows of text! Probably mostly OK, but I bet some letters would meet. The ST's OS used this font for icon labels, so there was always a gap.)