Date   : Thu, 24 Mar 1988 01:54:38 GMT
From   : portal!cup.portal.com!dgee@uunet.uu.net
Subject: Upgrades to CP/M, etc.

In an article jep@oink.uucp writes:
> In article <819@nuchat.UUCP> phillip@nuchat.UUCP (Phillip Keen) writes:
> > Hello there, I know CP/M is quite old.  Anyways, I've got CP/M 2.2, and I
> > was wondering is it possible to upgrade a machine with CP/M 2.2 to CP/M 3.0
> > or CP/M 3+ (same thing as 3.0)?  . . .
> > appreciated.
> > -- 
> > Thanx -- Phillip Keen           Path:  uunet!nuchat!phillip
> 
> Forget Digital Research, they don't want to deal with you.
> 
> Echelon has the CP/M upgrade worth messing with.  The've been putting
> out the ZCPRn stuff for years.  I have a couple of old addresses for sources
> out of my ZCPR3 book.
> 
> Echelon, Inc.
> 101 First Streetp
> Los Altos, CA 94022
> (415)948-5321

By all means, forget about cp/m 3.0 (cp/m+).  You will have both installation
and compatability problems, with very little clear gain.  Get a copy of 
ZCPR 3.3 (Z33) and either 1) install it with your cp/m 2.2 system, or
2) also install ZRDOS (I believe 1.9 is the current version).  Z33 is the ccp
(console command processor) replacement; ZRDOS replaces the Digital Research
bdos in cp/m 2.2.  You may replace either or both.  I suggest both; you will
have a far more powerful and flexible system than you would under cp/m 3.0,
or indeed than anything Digital Research ever dreamt of.

Z33 is public domain; you will find it on a number of RCPM's (Remote CP/M
System) around the country, or, you can buy it from Echelon, Inc. (at a
modest cost) in either an auto-install version, which works on most, but not
all, systems, or a manual install version (which makes for a more versatile
installation).  To do the manual installation, you will need a working
knowlege of the insides of cp/m, and some modest ability with z80 assembly
language.  I believe you will also need the ZAS assembler, also available
at modest cost from Echelon.

ZRDOS is a commercial product, available from Echelon.  Also modestly
priced; I believe around $50.  There are also several public domain bdos
replacements available, with varying combinations of features.

The contact point for Echelon given above is old.  Their current contact
is:
       Echelon, Inc.
       P.O. Box 705001-800
       South Lake Tahoe, CA  95705
       (916) 577-1105

I have no connection with Echelon; this is a referral only!

If you need further information or sources, feel free to contact me direct
via e-mail.

               Dave Goodman            dgee@cup.portal.com
                                       ...ucbvax!sun!cup.portal.com!dgee


End of INFO-CPM Digest
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