Date   : Tue, 12 Apr 1988 10:02:10 PDT
From   : Bridger Mitchell <bridger%rcc@rand-unix.ARPA>
Subject: User numbers > 15

ZCPR v 3.3 and v 3.4 include a "highuser" assembly option that permits
the command processor to log into user numbers 16...31.  When this
is done, the command processor's logged-in drive/user number is stored
in the ZCPR3 message buffers, and the value at 0003h is not valid.

Programs that refer to 0003 will probably run incorrectly, so
you need to check them carefully.  Other programs may (a) prevent
access to a user number > 15, (b) mask the high bits of a user number,
and thus convert a number > 15 into 0...15, which could cause
some nasty behavior, or (c) be just fine.  Because of these
difficulties, I suggest that the highuser option not be used.

BGii (BackGrounder ii) does NOT support logging into a "highuser"
user number; what it does support is references in the command tail to
user numbers up to the MAXUSER value (0...31).

Under BGii , this won't work:

       A>A31:

But this will (with MAXUSER = 31)

       A>DIR A31:*.*

--bridger


End of INFO-CPM Digest
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