Amharic Orthography and Homonyms, by Girma Getahun. The
article includes two parts and both of them are written in Amharic
and presented in PDF format. You need Acrobat Reader to view them.
The documents are hosted here with
permission from Ato Girma Getahun. Amharic Orthography and Homonyms, Part I; Amharic Orthography and Homonyms, Part II
Software...
LeJireT for LaTeX:
A readily available package that includes Ethiopic Unicode
Truetype font, its TFM and ENC files, and the necessary configuration
files.