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ZCPR-2 on the KAYPRO 10
=======================
----------
REVISION NOTE:
This file has been revised since its original release. The major
changes are to accomodate the three (!) different operating systems
that have been released for the Kayrpo 10 and provide two options of
CPR systems for general use and SYSOP's of RCPM systems.
----------
The accompanying files allow installation of Rich Conn's replace
ment console command processor on the Kaypro 10. This processor
replacement, and its rich collection of utilities, greatly enhance the
utility and flexibility of this hard disk machine. It is in this
environment that ZCPR-2 really shines!
The Kaypro 10 has limited graphics capability by defining each char
acter block into 8 segments. These 8 segments are turned on by the
appropriate characters in the 128 - 255 character range, i.e., those
with the eighth bit set. Since some programs (and some ZCPR-2 utili
ties) depend on this eighth bit being set, a method was needed to
prevent this graphics character being displayed when standard ascii
text should be displayed.
This has been accomplished by the simple expedient of adding a mask in
the CONOUT routine of the BIOS which tests a specific byte in memory
and, if it is set, allows graphic character display; if it is clear,
the eighth bit is masked off and the standard character set is dis
played. This byte, located at 04FH, is set by a command that has been
added to the ZCPR2 CPR. This command, "GRAF", is used like any other
resident command, such as, REN or ERA. It toggles the graphic byte at
04FH. This is indicated on the display by the CPR prompt ">". In
ZCPR-2 installations, this prompt character has the eighth bit set so,
when the graphics mode is enabled, a block character is displayed next
to the drive/user number. Merely type "GRAF <cr>" and the standard
cpr prompt ">" appears.
The Kaypro 10 has an open block of memory between 0F100 and 0F600 and
this space is used for the ZCPR-2 buffers. This allows installation
without further shrinking the available TPA. A full featured ZCPR-2
installation is provided with the sole exception of IO redirection.
(My assembly language programming isn't good enough for this yet.)
There are three versions of the CPM operating system that has been
released by Kaypro for the 10. These may be identified by the cold
boot sign on message. In the remainder of this document, I will refer
to them as versions 0, D and F. The sign on messages and the
corresponding versions are as follows:
.pa
Sign on Message Version
--------------- -------
KAYPRO 10 CP/M Version 2.2 0
KAYPRO 10 CP/M Version 2.2D D
KAYPRO 10 CP/M Version 2.2F F
The following description of the two "systems" describe the
options that may be generated using the appropriate BIOSPAT.ASM along
with the Z2STD.HEX/Z2SEC.HEX files. The source code modifications to
ZCPR2.ASM and ZCPRHDR.LIB are described in the accompanying Z2PAT.DOC
file. The only files you need to supply are your distribution copy of
PUTSYS.COM and DDT.COM.
PUTSTD.COM
----------
This file is used in place of PUTSYS.COM, as supplied with the
Kaypro. This version of ZCPR2 is a more or less standard version with
resident DIR, TYPE, LIST commands. Because it is a full featured CCP,
external buffers are used for the CCP stack as well as the CCP file
control block. This version is intended as a "general use"
implementation.
PUTSEC.COM
----------
This version is also used in place of PUTSYS.COM but is intended
for use in situations requiring security such as RCPM systems. The
DIR, LIST and TYPE commands have been deleted to allow replacement
with limited transient programs to accomplish the same functiion.
Additionally, a patch has been added to ZCPR2 CCP to allow limiting
the maximum disk and user when the WHEEL byte is reset. All remaining
ZCPR2 resident commands, except the DU: command, have been made wheel
oriented commands. Thus, a SYSOP can have a reasonably secure system
and be able to open it up for his personal use without a lot of
passworded files. In fact, using the limited user area approach, it
is possible to put up a RCPM system with NO .COM files in the
accessible user areas and yet through a double password system,
totally open up the machine. Much of this implementation depends on
the use of the powerful ZCPR2 utilities such as CD, MKDIR, STARTUP,
PATH, LD along with customized versions of RBBS, XMODEM and BYE.
(Note that CD MUST be modified to run under BYE with BYE LOW as is
done with the Kaypro 10.)
.pa
Buffer Locations
----------------
Buffer Name PUTSTD.COM PUTSEC.COM
----------- ---------- ----------
WHEEL BYTE 003E 003E
External Path 0040-004E 0040-004E
GRAPHICS BYTE 004F 004F
CPR FCB F2D0-F2F0 Internal to CPR
Named Directory F300-F4FF F300-F4FF
Multicommand line F500-F5CF F500-F5CF
CPR Stack F5D0-F600 Internal to CPR
Files Included
--------------
BIOSPAT0.ASM Patch file for version 0
BIOSPATD.ASM Patch file for version D
BIOSPATF.ASM Patch file for version F
Z2STD.HEX Overlay file for PUTSTD.COM
Z2SEC.HEX Overlay file for PUTSEC.COM
Z2PAT.DOC Description of ZCPR2 CPR Modifications.
NZ2KP10.DOC This file
.pa
Installation Procedure
----------------------
The only files needed beyond those supplied here are DDT.COM and
PUTSYS.COM. The latter writes CPM on the hard disk. Before beginning,
I suggest you edit the PATH: section of the appropriate BIOSPAT.ASM
file to suit your needs. As this one is coded, the PATH is current
user, drive A, then Drive A, user 0. The idea is to overlay CCP and a
CCP patch added at the end of the BIOS with the ZCPR-2 CPR and the
BIOSPATCH routine. This is accomplished as follows: (Lines you type
indicated by <--- )
A0>ASM BIOSPATx.AAZ <cr> <--- (Insert 0,D or F for x as
CP/M ASSEMBLER VERSION 2.0 appropriate)
nnnn <--- (Depends on version: 0 - EC4B
000H USE FACTOR D - ECFE
END OF ASSEMBLY F - ED11)
Warm Boot
A1>DDT PUTSYS.COM <cr> <---
DDT VERS 2.2
NEXT PC
2300 0100
IZ2STD.HEX <--- (or, for PUTSEC, IZ2SEC.HEX)
R3580 <---
NEXT PC
2300 D400
IBIOSPATx.HEX <--- (Insert 0, B or D for x as
R3580 <--- appropriate.)
NEXT PC
2300 CC68 <--- PC depends on version
G0 <---
Warm Boot
A0>SAVE nn PUTSTD.COM <--- (or PUTSEC.COM. Note that nn
the decimal equivalent of
the hex number given under
NEXT when DDT is invoked. Values
for nn are: 0 - 35
D - 34
F - 40)
You can now use PUTSTD.COM or PUTSEC.COM to rewrite the modified CP/M
on the system track of the hard disk. Run it then do a cold boot.
You should get a new sign-on message with the line "STARTUP?". The
Multicommand line buffer is initialized to look for and execute a file
called "STARTUP.COM" so you can rename any desired starting program to
get an automatic execution on cold boot. (If anything goes wrong, put
a floppy disk with CP/M on it, into the drive, do a cold boot, and run
PUTSYS.COM (not PUTSTD.COM or PUTSEC.COM) and that will get you back
to go.)
Assuming all is ok to here, you will see a block character next to A0.
Type "GRAF <cr>" and you should see the normal CPR prompt.
The following hex values associated with this ZCPR-2 installation:
Some excellent manuals on all the ZCPR2 documentation are available
from:
New York Amateur Computer Club
P. O. Box 106, Church St. Station
New York, NY 10008
Ask for Book 6: ZCPR2 User & Reference Manual and Book 7: ZCPR2 &
SYSLIB These are $10.00 each and well worth it.
Thanks to Rich Conn for his excellent contribution to public domain
software. I hope I have done his effort justice by the above
installation. Any "bug" reports can be left on the Syracuse Kaypro
Network at 315-468-2887.
John C. Smith
Manlius, NY
December 4, 1983