Unscii-8 by viznut
https://github.com/viznut/unscii

The ASCII subset of unscii-8.ttf is public domain / CC0.
The generated native-size glyph data in firmware/src/ascii_fonts.c derives
only from that subset, with nearest-neighbour resizing.
The Unifont-derived unscii-16-full variants are not used.
CC0 text: https://creativecommons.org/publicdomain/zero/1.0/legalcode