ROMAS

The Cross Assembler And Macro Editor For Serious Programmers!

ROMAS is a carefully designed, sophisticated yet simple to use, development
system for serious assembly language programmers. Using the BBC as the
development system, you can choose your target system from the following
processors:

6502, 65C02, Z80, 8085, 8041, 6809 and Z8
P.S. This includes the Acorn 6502 & Z80.