How about the manual for ASMON?  That looks like a rather nice assembler, too.

here you can find all available ep assemblers, unfortunately description is only hungarian.
http://www.ep128.hu/Ep_Util/Ep_Util_eng.htm

here you can find all available ep assemblers, unfortunately description is only hungarian.
http://www.ep128.hu/Ep_Util/Ep_Util_eng.htm

Try Google/Chrome translate

Thank you both!

Yes, those pages are full of all of the excellent reference information that I need.

Google translate is fine ... it isn't as readable as a native English person, but it manages to get the important meaning across.

I'm just glad that you gentlemen in Hungary kept the Enterprise alive and kept on developing excellent software for it!