Date   : Fri, 22 Feb 1991 09:13:59 PST
From   : sprague.wbst311@xerox.com
Subject: ZSDOS on a Xerox 820-II

Some of you will remember the trouble I had installing ZSDOS on my Xerox
820-II, specifically all the trouble I had with MOVCPM.

I think I finally have it installed.  Thanks to an old issue of The Computer
Journal, I found that SYSGEN could create an absolute model of your system.
While my CP/M manual doesn't say anything about it, an old book on CP/M did.
You need to do a SYSGEN/SAVE combination.  It was NOT obvious how many memory
pages I needed to SAVE (even though the book thought it was).  I checked the
size of the file MOVCPM had created for my 60k system, and found it to be about
the same size as that shown in the books 54k example.  I did a SAVE 41 to
SYSTEM.MDL.

I then used INSTALOS in the absolute mode, and loaded in the file I had created
with the SYSGEN/SAVE combination.  This time, the BDOS, CCP, and BIOS were
about where I expected them to be.  I replaced the BDOS with ZSDOS, and then
saved the file.

I then used it to SYSGEN a new disk, and had no trouble booting up and using
the disk.  While I still have a little bit of work ahead of me to make sure it
really worked, so far it seems to.  It's nice not having to press Control-C
whenever I change disks in the B drive!!  Of course some of the other features
are far more useful, but that was the first one I noticed.

Next step, ZCPR!

                               ~ Mike


End of INFO-CPM Digest V91 Issue #43
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