Date   : Mon, 12 Oct 1987 09:30:07 edt
From   : marwood@dmc-crc.arpa (G. J. Marwood)
Subject: Z80MR query

I have come across something which puzzles me concerning Z80MR.  Source code
for ASM.COM as follows works OK:-
        IF     NOT MEXPLUS
                .
                .
        ENDIF

For a Z80MR source file I would have expected the following to be equivalent:
        IF    .NOT.MEXPLUS
               .
               .
        ENDIF
This does not seem to perform the .NOT. operation on MEXPLUS.  However, the 
following does work for Z80MR.
        IF    TRUE.AND.(.NOT.MEXPLUS)  etc
As this performaed the .NOT. operation properly I woondered whether
        IF    (.NOT.MEXPLUS) etc would work.  However, it does not.
Does anyone have an explanation.  The .DOC file for Z80MR is not very 
informative on this subject.
                                          Gordon Marwood