A technical note regarding the Kaypro Campus User Group implementations of 
ZCPR 3.3 and Z80DOS for the Kaypro II/IV, 2X/484, and K10 computers.

    There are four files available in the series of configurations released 
in April 1988:

    K484ZDOS.LBR  replaces the CP/M BDOS with Carson Wilson's Z80DOS.  This 
              allows for the automatic logging in of changed disks and 
              makes the Kaypro delete key function as such.  No change has 
              been made to the CCP and only a minor change to the BIOS.  
              This configuration is only for the 2X/4(84) series.

    GENK83Z3.LBR  replaces all CP/M modules; no part of the operating system 
              remains of the CP/M original, although the Kaypro BIOS is 
              only slightly changed to adapt to the ZCPR system.  The CCP 
              is replaced with ZCPR version 3.3, the BDOS with Z80DOS 
              version 1.0, and the user BIOS with a somewhat modified 
              version.  This is for the Kaypro II and IV models (i.e., the 
              "non-video" models with the pre-84 motherboards).

    GEN484Z3.LBR  identical with the GENK83Z3 implementation, although the 
              BIOS will only operate on the '84 and later non-hard disk 
              models.  This is for the 2X and 4(84) models.

    GENK10Z3.LBR  identical in theory to the previous two versions, but 
              this one retains the system size and segment mapping of John 
              Smith's earlier ZCPR 3.0 versions.  Therefore, it is based on 
              a 58K system size rather than the (nearly) 60K system of the 
              previous two implementations.  It has only been tested on 
              K10s with the 1.9E ROM, so any other models of the K10 must 
              be tested.  It will not work with the U ROM, however.

    Interested Kaypro users should seek out the following files so that 
they might be able to generate systems with slightly different 
characteristics.  To do so, one must understand the many options available 
with each "package," a task that is beyond the scope of these KCUG 
configurations.  Detailed instructions are provided or are available with 
each set of system software, and the possibilities for the adventurous user 
are almost unlimited.

ZCPR 3.3 is copyright 1987 by Echelon, Inc.  Distribution can only be for 
non-commercial purposes.  For full details about this remarkable set of 
software, write for the catalog detailing same:

              Echelon, Inc.
              P.O. Box 705001-800
              S Lake Tahoe  CA  95705
              U.S.A.

The ZCPR version 3.3 software (and attendant utilities) are also 
distributed over many RASes (Remote Access Systems) throughout the world, 
and users with modem capabilities are encouraged to keep up with the latest 
advances in the system and its utilities via that means.  Those without 
modem capabilities can subscribe to the series of software "updates" 
available on disk through Echelon.  See their catalog.

Z80DOS has been released to the public by its author, Carson Wilson.  The 
version used in this release is 1.0, the code and instructions for which 
may be found in a file called Z80DOS10.LBR.  Wilson's chief contribution to 
this series of advances over the original CP/M BDOS lies in his attention 
to the concept of date and time stamping of files, a feature of his code 
that has not been adopted in this Kaypro release.  Users interested in this 
facet of an operating system are encouraged to both read Wilson's 
documentation and also to keep up with his latest efforts.  I have seen a 
message to the effect that Wilson has produced a version 2.0, but details 
of this package are not yet known to me.

The Kaypro BIOSes generated for this series of ZCPR configurations depend 
in great measure upon work done previously by many different "hackers."  In 
addition, I disassembled the user BIOSes of the machines to which I had 
access during the work on these offerings.  The primary change over the 
previous ZCPR Kaypro implementations was the small but significant addition 
of code to initialize the system environment descriptor (SYS.ENV) in a way 
first suggested by Robert Doolittle (an early contributor to the ZCPR 
project) and reported in Z-NEWS 108 (25 March 1985), but for some reason 
left out of the several Kaypro ZCPR implementations.  This code allows the 
initial STARTUP file to be created by any ZCPR alias creation tool, a 
problem that had vexed many Kaypro Z users.  While I was at it, I adopted 
some other tricks, especially code used by Dreas Nielsen in his KRAMBIOS (a 
ZCPR BIOS modification for the Kaypro with RAM disk).  The path setting was 
chosen on the basis of my own experience with ZCPR over the past few years.

The only guide to ZCPR known to me to be for "non-hackers" has been 
published by Echelon, notably as a companion for the Kaypro "boot disks" 
they offer (that incorporate a different BDOS replacement than does the 
KCUG implementation).  Users interested in getting to know this system 
should order the publication Z-SYSTEM USER'S GUIDE from Echelon at the 
address given above.  At the time of this writing (April 1988), the price 
is $14.95 for the 95 page manual.  See their catalog first before ordering.

This series of implementations has been produced for distribution through 
the Kaypro Campus Users Group, meeting currently at the University of 
Washington campus in Seattle, WA.  Information about the club can be had 
through:

              Bob Nylander
              7713 11th Av NW
              Seattle WA 98117
              MESSAGES: ADAM'S RBBS (206) 886-3684

The implementer (me) wishes to thank the following individuals for their 
help in creating the packages you have before you: Bob Nylander, Thatcher 
Deane, Heng Tso, David Miles, and Dreas Nielsen.

For the Kaypro Campus User Group, Michael Broschat, Seattle WA  April 1988