I made a syntax highlighting font (also mentioned as an inspiration to Z80 sans):

https://blog.glyphdrawing.club/font-with-built-in-syntax-hig...

next is to build a disassembled inside a pdf

get zmachine.ps and you could play zork i-iii, Tristam Island and tons of z3 zmachine games (search for calypso.z3 too) without cheating as the PDF format implements an ad-hoc JS interpreter where not all viewers parse it.