Date   : Tue, 26 Jun 1984 13:58:20-PDT (Tue)
From   : hplabs!sdcrdcf!sdcsvax!bmcg!asgb!rob@Ucb-Vax.arpa
Subject: CP/M and CB80 questions

( whew!  The li      ng monster onl         ouple of bites )

   I have a couple of questions which Digital Research left unanswered
in their documentation.  I understand they have been improving,
but the versions of their manuals I have seem to fall short of the
quality of their software.
   I did try calling them, but they refused to answer, as I have not
purchased their $250.00 programmers support subscription.  Sounds
rather outrageous at first, but I guess they have to do that or else
they would end up consulting for half the country.

The questions:
   1.  This question is about the CP/M* file "$$$.SUB".  How does
       one generate the values for the first byte of each sector?
       I've written a nicer version of the "SUBMIT" command, and
       this is the only thing keeping it from working.


   2.  When compiling CB-80* programs, is there any way to tell the
       compiler a given function, variable, or statement label is
       either external or global so they may be referenced by all
       linked modules?

       I am converting a program to CB-80 for a friend.  I would
       like to plthece the main menu and a frequently used functions
       in the resident module and have them callable from overlays.
       I saw no provision for this in their manual, and I don't have
       the compiler on my system to experiment with.

   I would appreciate some help anyone might be able to give me
on these questions.  Please reply with "mail".

*   CPM (CP/M) and CB80 are trademarks of Digital Research Inc.

       Thanks in advance,

       Rob Greenbank
       Burroughs, Boulder Colorado
       decvax!ittvax!dcdwest!sdcsvax!bmcg!asgb!rob