[GreenKeys] UGC-136 print sample

[Harold Hallikainen]

On Thu, July 10, 2025 4:44 pm, Nick England wrote:
> 7x9
> https://www.navy-radio.com/tty/ugc136/ugc136-ad-1.jpg

That looks pretty good! I assume there is no lower case (as I recall,
these can do ASCII or Baudot). I think the Teletype model 43 looked a bit
better (and included lower case with descenders). Some model 43 output is
at https://bh.hallikainen.org/uploads/HfDrc190.pdf#page=14 .

 I've done a lot of projects using Unifont (
https://en.wikipedia.org/wiki/GNU_Unifont ) that uses either an 8x16 or a
16x16 bitmap for each glyph. In products I designed (before retiring a
few years ago), I included the first 65,535 Unix code points. That covers
upper and lower case ASCII plus a lot of glyphs for Japanese, Chinese,
Korean, Arabic, etc. In thos products, I wrote code that converted UTF-8
to 16 bit characters which then indexed into a 1 MB SPI flash to get the
bitmap. In the DSP TU, I used just the ASCII range (all glyphs 8x16) to
drive the display for the menus.

All fun stuff!

Harold



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