I'm slapping my forehead for being so stupid!  I didn't realise that you
cannot make a forward reference to a macro.  Actually, I knew you couldn't
with absolute code, but I just kinda thought the linker would sort it out
with relocatable code.  But it doesn't.

Getting that into my skull has meant that my problem has gone away.

Thanks to everyone for putting up with this barrage of stupid questions
and *still* being helpful!

Steve

Steve Thackery
Suffolk, England.
Web Site: http://www.btinternet.com/~stevethack/