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ZCPR33
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Z-PLAN.INF
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INI File
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2000-06-30
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7KB
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128 lines
[Z-PLAN.INF]
Alpha Systems (Joe Wright)
711 Chatsworth Place
San Jose, CA 95128
408-297-5583 (voice)
New NZ-COM and Z3PLUS Releases!
Joe Wright, Bridger Mitchell and Jay Sage have just completed
NZ-COM and Z3PLUS, new versions of the Z-System that are automatic,
universal, and dynamic. NZ-COM runs on CP/M-2.2 computers; Z3PLUS runs
on CP/M-Plus computers. NZ-COM does run on Apple CP/M cards.
They are automatic in that no installation is required. In par-
ticular, no changes have to be made in the BIOS. There is no need for
source code, editing, assembling, MOVCPM, SYSGEN, or DDT. The Z-System
can be removed at any time by issuing a command that reinstates the
user's underlying CP/M system. Joe Wright invented the basic technique
with his Z3-DOT-COM and Z-COM products several years ago. Bridger
Mitchell has extended the technique to CP/M-Plus systems, and many
very substantial enhancements have been added.
The new systems are universal in that system modules can be
provided in a file format that can be used on any system with memory
allocated for that module. Bridger Mitchell invented a new relocatable
file format which we call ZRL, for Z-system ReLocatable. It is based
the seldom-used named common facility supported in advanced assem-
blers. For example, the new command processor, ZCPR34, can be supplied
as a small, binary file (e.g., ZCPR34.ZRL) that can be loaded into any
CP/M-2.2-based Z-System, no matter how its memory is configured
(Z3PLUS has an equivalent command processor). There is no longer a
need to assemble from source code with a Z3BASE.LIB file configured to
describe the user's particular system. The same is true for RCPs,
FCPs, DOSs, and other code modules.
Jay Sage's contribution to the effort (besides the version 3.4
command processor) was to make the operating systems dynamic. It is no
longer necessary to make a static, once-and-for-all trade-off between
Z-System features and program memory space. The operating system is
now more like an application program -- it can be changed at any time,
even right in the middle of a multiple command line. It can be changed
manually or automatically under the control of aliases that use the Z-
System flow control facility.
Now you can allocate memory (1.5K typically) for an IOP (input-
output package) only when you are actually using an IOP. When a mem-
ory-hungry application program is to be run, you can drop the two
largest buffers, the RCP and IOP, which usually take 3.5K of memory.
If you need still more room, you can drop the NDR and FCP. You can
make a minimum Z-System that takes only 1.0K and still provides its
most important features. If your application requires absolutely every
available byte of memory, you can drop back to CP/M. Using SUBMIT,
even this process can be automated! The Z-System can disappear, an
application can run under standard CP/M, and the Z-System can be
reestablished, all automatically as a result of a single user command!
You never even know that Z-System was gone.
Page 1
[Z-PLAN.INF]
With NZ-COM's system definition utility MKZCM (MaKe Z-Com) you
can define the sizes of the following modules: CCP, DOS, BIOS, IOP,
RCP (resident command package), FCP (flow command package), NDR (named
directory register), shell stack, and an all-purpose user buffer. The
latter can be used for "above-BIOS" items like DateStamper, BYE,
special drivers, and so on. In the case of the shell stack, you can
define both the size and number of stack entries supported. And, by
the way, that was not a misprint above -- you can define systems with
nonstandard CCP, DOS, and BIOS sizes. This allows for some rather
interesting experiments and configurations. Z3PLUS allows similar
capabilities.
You can now have several versions of command processor or DOS and
load a new one with a simple command. NZCOM is supplied with four
significant variants of the command processor; Z3PLUS includes two
versions, one of which puts the time in the prompt. Similarly, with
NZ-COM you can switch between ZRDOS (supplied with NZ-COM) and other
versions of the DOS now (or soon) available, such as P2DOS, Z80DOS,
ZSDOS, and ZDDOS. (Z3PLUS uses the CP/M-Plus DOS.)
Each product includes an extensive manual (more than 70 pages in
'IBM' format binder, written by Jay Sage and Bridger Mitchell) co-
vering the particular product and Z-System in general. There are many
examples and hints. Each product is priced at $69.95 for the standard
version including the necessary operating system files and a minimum
set of Z utilities. NZ-COM is offered in a version with some sources
(including the source to ZCPR34) at $99.95. Eventually there will
probably be some higher priced versions that include a more extensive
set of Z utilities on diskette. For those who have access to Z-Nodes,
Royal Oak, or Simtel20, there will be no need to spend the extra money
on these versions. For those who for some unusual reason cannot use
NZ-COM (or for the stubborn who insist on an inferior, manually in-
stalled system), the source to ZCPR34 is available separately at
$49.95.
For those who have not heard, Joe Wright's Alpha Systems has
taken over the marketing of Z-System from Echelon, which is essential-
ly out of business.
Z-PLAN
(A special offer to all CP/M 8-Bit Computer Clubs & User Groups!)
As our special way of saying thank-you to the 8-Bit CP/M communi-
ty who have stayed loyal to us over the years we would like to make
available NZ-COM and Z3PLUS to User's Groups and Computer Clubs on a
special basis. We would like to make the Clubs and User Groups our
dealers and have them sell direct to their members at substantial
savings. We see this arrangement as an ideal way of promoting our
products, and doing our little bit to support the User Groups and
Clubs which are very definitely the back-bone of the 8-Bit CP/M com-
munity. Print this file and the files Z-PLAN.DOC, Z-PLAN.FRM, and take
them to your next club meeting to discuss with your other club mem-
bers. Also please upload Z-PLAN.LBR to the other BBS's you use.
Page 2