🚀 go-pugleaf

Summary:  Take a look at the Duke Language Toolkit

It sounds to me like what you want has already been done.  The following
is from "QuickNotes", the PC-Write newsletter:

     "Now available is the Duke Language Toolkit which allows PC-Write
users to produce Greek, Coptic, Amharic, Russian and Hebrew characters.
Even more important, it allows users to define their own character fonts.
     "The Toolket was developed specifically for use with PC-Write by
Jeff Gillette of ... Duke University.  It requires an EGA boards and works
with the Toshiba P351, IBM Proprinter, and Epson FX series printers."
     "Gillette will send a copy of the Toolkit to anyone who sends him two
blank formatted diskettes and return postage.  Direct your requests to:"
  
    Jeff Gillete
     Department of Germanic Language and Literature
     104 Language Building
     Duke University
     Durham, NC   27706

[Despite the references to PC-Write, this program works directly with the
EGA.  PC-Write is very flexible in allowing you to map keys and key comb-
inations to different characters, which is what makes it nice for this
purpose]