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From: marwood@dmc-crc.arpa (G. J. Marwood)
Newsgroups: comp.os.cpm
Subject: Z80MR query
Message-ID: <8710121330.AA12482@dmc-crc.arpa>
Date: Mon, 12-Oct-87 09:30:07 EDT
Article-I.D.: dmc-crc.8710121330.AA12482
Posted: Mon Oct 12 09:30:07 1987
Date-Received: Tue, 13-Oct-87 05:30:28 EDT
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 20

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