home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Software Vault: The Diamond Collection
/
The Diamond Collection (Software Vault)(Digital Impact).ISO
/
cdr29
/
zs103e.zip
/
ZSNEW.INF
(
.txt
)
< prev
next >
Wrap
OS/2 Help File
|
1995-03-18
|
28KB
|
436 lines
ΓòÉΓòÉΓòÉ 1. ZipStream ΓòÉΓòÉΓòÉ
ΓòÉΓòÉΓòÉ 2. Copyright ΓòÉΓòÉΓòÉ
Copyright (C) Carbon Based Software 1993 - 1995. All Rights Reserved.
No part of this publication may be reproduced, stored in a retrieval system or
transmitted in any form or by any means, electronic, mechanical, chemical,
photocopy, recording or otherwise without the prior written permission of
Carbon Based Software.
ΓòÉΓòÉΓòÉ 3. What's New ΓòÉΓòÉΓòÉ
This section describes new features and functions that have been incorporated
into ZipStream since the last major release.
ΓòÉΓòÉΓòÉ 3.1. New Compression Options ΓòÉΓòÉΓòÉ
This release of ZipStream contains new compression and cacheing algorithms that
significantly improve performance in cases where the existing algorithms have
suffered.
As with any compression or cacheing algorithm, there will always exist
pathological cases where one algorithm will perform badly while another will
perform well and visa versa. We have tried to ensure that the best performance
is always achieved by using adaptive techniques, but even this can suffer in
unexpected cases. For this reason we have still allowed manual selection of
algorithms where appropriate.
Users of eariler versions of ZipStream (prior to v103e) can utilize the new
compression and cacheing options. In this case, existing compressed files will
need to be recompressed into a new format. i.e.
zsunpack *.*
zspack *.*
To give you an idea of the new performance possible, here is some test results
with AmiPro.
AmiPro startup with no compression: 21 seconds
AmiPro startup with old compression algorithms: 60 seconds
AmiPro startup with new compression algorithms: 27 seconds
ZSPack, by default, uses a standard set of compression parameters when
compressing files. These parameters can optionally be configured by using the
Warp '/w number' option.
New Warp values of '2', '3' and '4' may be applied in addition to the older
values of '5', '6', and '7'. See the compression options subsection in the
ZipStream reference for further information.
ΓòÉΓòÉΓòÉ 3.2. New File System Options ΓòÉΓòÉΓòÉ
New options have been added to ZipStream that provide the following enhanced
functions:
1. Prevention of automatic compression of new files.
2. Prevention of recompression of modified compressed files i.e. compressed
files that are modified will be returned to an uncompressed state.
3. Disabling of file rename tracking.
Note: These new options are recommended only in special cases where there is a
clear need for the functionality. In most cases we suggest you operate
ZipStream in its default configuration.
Using the new options
To use the new options you must add 'option command switches' to the
'run=c:\cbased\cbssvr.exe' line in your config.sys.
Prevention of Automatic Compression of New Files
This option is most useful when you wish to manually compress files with ZSPack
to establish your compressed environment and you do not want any further
automatic compression to take place. e.g. You have a Word Processing program
that you compressed with ZSPack, but you do not want any new files created by
the Word Processor to be compressed.
To prevent compression of new files, add a '/P' switch to the cbssvr.exe line
in your config.sys as follows:
run=c:\cbased\cbssvr.exe /P
Prevention of Recompression of Modified Compressed Files
This option will disable the recompression of updated or modified files that
were previously compressed. That is, a compressed file that is modified will
be saved in uncompressed form.
To prevent recompression, add an '/R' switch to the cbssvr.exe line in your
config.sys as follows:
run=c:\cbased\cbssvr.exe /R
Disabling of file rename tracking
This option will prevent ZipStream from monitoring rename operations. Normally,
most Word Processors and similar programs update a file by writing to a
temporary file and then renaming it to the actual file name. ZipStream will by
default, track these operations to ensure that new or modified files that are
renamed are automatically compressed.
To prevent rename tracking, add a '/M' switch to the cbssvr.exe line in your
config.sys as follows:
run=c:\cbased\cbssvr.exe /M
Note: The above configuration options can be combined in any order e.g.
run=c:\cbased\cbssvr.exe /P /R /M
will disable compression of new files, recompression of existing compressed
files and rename tracking.
ΓòÉΓòÉΓòÉ 3.3. New Option for ZipStream Compress ΓòÉΓòÉΓòÉ
The ZipStream Compress utility (zspack.exe) now has an option to compress
files that appear to be already in a compressed format.
Normally the utility will not attempt to compress files that appear to be
already in a foreign compressed format. This default operation can be
overridden using a '/Z' switch e.g.
zspack /Z filenames
ΓòÉΓòÉΓòÉ 3.4. New Option for ZipStream Attach ΓòÉΓòÉΓòÉ
A new option has been added to the ZipStream Attach utility (zsattach.exe) to
cause it to attempt to reattach paths based on data in its persistent
connection database.
This operation is most useful when you have an attachment to a removable media
device such as a Diskette, that may not be present during system startup.
To cause reattachment to occur run the utility with a '/R' switch e.g.
zsattach /r
ΓòÉΓòÉΓòÉ 4. Compression Ratios ΓòÉΓòÉΓòÉ
Many users ask for some idea of expected compression ratios that can be
achieved with ZipStream.
Examples
AmiPro for OS/2 54% or 2.2:1
WinWord v2.0 50% or 2.0:1
Various Games 50% or 2.0:1
FaxWorks for OS/2 60% or 2.56:1
IBM CSet++ V2.1 64% or 2.82:1
ΓòÉΓòÉΓòÉ 5. De-Installation of ZipStream ΓòÉΓòÉΓòÉ
De-Installation of ZipStream is fully automatic if you did a standard
installation.
Warning: Prior to de-installation all compressed files should be decompressed
using the ZSUnpack utility.
To De-Install ZipStream, follow these instructions
1. Insert the ZipStream diskette into the A: drive (or B: if applicable)
2. Open an OS/2 Command Window or
3. Enter the following command a:zsinst -d (or b:zsinst -d )
That's all there is to it. Should you have any problems, please contact our
technical support service.
ΓòÉΓòÉΓòÉ 5.1. Manual De-Installation ΓòÉΓòÉΓòÉ
These notes are provided to assist users who have modified the standard
installation.
1. Edit your config.sys and remove the following lines
IFS=x:\cbased\cbs.ifs
RUN=x:\cbased\cbssvr.exe
(where x: is your OS/2 boot drive)
2. From the ZipStream installation diskette run
zsinst -u
This removes the WPS objects
3. Reboot the system in the standard way.
4. Delete the following files
x:\cbased\cbs4mbs.dll
x:\cbased\cbscompr.dll
x:\cbased\cbsfsf.dll
x:\cbased\cbsfsfs.dll
x:\cbased\cbs.ifs
x:\cbased\cbssvr.exe
x:\cbased\zspack.exe
x:\cbased\zsunpack.exe
x:\cbased\zsattach.exe
x:\cbased\zssync.exe
x:\cbased\zsstatus.exe
x:\cbased\zsquery.exe
x:\cbased\zsreg.exe
x:\cbased\zsdemon.exe
x:\cbased\zsfold.ico
x:\cbased\zstream.inf
x:\cbased\zsfold.ico
x:\cbased\zsnew.inf
x:\cbased\order.inf
(where x: is your OS/2 boot drive)
ΓòÉΓòÉΓòÉ 6. Evaluation Period Timeout ΓòÉΓòÉΓòÉ
If you are using an Evaluation Copy of ZipStream, the transparent
compression/decompression system will cease to operate after 45 days from
installation.
Files can always be interactivly decompressed with the ZSUnpack utility after
the transparent compression system evaluation period has expired.
We suggest that after the evaluation period is up you run the ZSUnpack command
across all your system drives to decompress any compressed files.
e.g. zsunpack /s c:\ d:\
ΓòÉΓòÉΓòÉ 7. Using ZipStream with ΓòÉΓòÉΓòÉ
This section provides hints, tips, warnings etc when using ZipStream with
various products.
Basically, any product that runs with OS/2 can run compressed from a ZipStream
path.
The only real areas where problems can occur is where you have an existing
product installed and then want to compress it. Some products have information
keyed to their installation path so that compressing with the ZipStream utility
'zspack' and then running from the compressed path, may lead to problems.
We will continually expand this section based on user feedback and will try to
provide automated solutions where possible. If you have a solution to a
problem with compressing an application, then let us know and we will add it to
this section in future updates.
ΓòÉΓòÉΓòÉ 7.1. DOS ΓòÉΓòÉΓòÉ
At this stage ZipStream is an OS/2 only 'on the fly' compression product. We
will introduce some DOS support utilities in mid 1995, and we are planning to
develop a compatible 'on the fly' version for DOS.
ΓòÉΓòÉΓòÉ 7.2. FaxWorks ΓòÉΓòÉΓòÉ
Installing and then using Faxworks from a ZipStream path can be done with no
problems. However, the Faxworks Device Driver must be loaded from a non
ZipStream path.
e.g.
Assume Faxworks is installed to the ZipStream path Z:\FAXWORKS which is a
mirror of D:\FAXWORKS. The Faxworks device driver FMD.SYS must be loaded from
the D: drive not the Z: drive. i.e. The line
DEVICE=Z:\FAXWORKS\FMD.SYS L
in config.sys must be changed to
DEVICE=D:\FAXWORKS\FMD.SYS L
Compressing an existing copy of Faxworks will be successful, however, after
compression you must setup the new path configuration information for the
Faxworks software.
This can be achieved easily by starting Faxworks from an OS/2 command prompt
and issing the following command:
faxworks -L<newpath>
where newpath is the Faxworks compressed path. e.g.
Assume again that Faxworks is initially installed on the path d:\faxworks and
the compressed path is z:\faxworks. Run the following command:
z:\faxworks\faxworks -Lz:\faxworks
ΓòÉΓòÉΓòÉ 7.3. Galactic Civilizations ΓòÉΓòÉΓòÉ
No problems occur with the normal use of Galactic Civilizations from a
ZipStream compressed path.
Installing the gcfix04.exe update for Galactic Civilizations on a ZipStream
path will cause the application to fail. This problem is under investigation.
In the meantime you can install the update using the following method.
1. Decompress the application with ZSUnpack.
2. Apply the fix to the host path. That is, do not apply the fix to the
ZipStream path.
3. Recompress the application again with ZSPack.
ΓòÉΓòÉΓòÉ 7.4. IBM Works ΓòÉΓòÉΓòÉ
No known compatibilty problems exist with the Works product, However, it is
recommended that you install Works to a ZipStream path rather than compressing
it after installation.
Currently when installing Works to a ZipStream path, not all files will be
automatically compressed. We are looking into this situation and will provide
a solution as soon as possible. In the meantime, after installation is
complete, re-compress the Works directory again with 'ZipStream Compress'
(ZSPack).
ΓòÉΓòÉΓòÉ 7.5. OS/2 2.11 ΓòÉΓòÉΓòÉ
No real compatibility problems exist between ZipStream and OS/2 2.11 as such.
When accessing a shadow of a ZipStream path from the Workplace Shell, OS/2 can
display a dialog box similar to the one shown below.
Click on 'OK' or 'Cancel' as the message can be safely ignored.
This error is due to a problem with the OS/2 Workplace Shell. A fix for this
is available from IBM in response to problem report APAR PJ11057. You can
obtain this fix as part of Fix Pak XR_A058. This can be downloaded from IBM
OS/2 BBS sites around the world.
ΓòÉΓòÉΓòÉ 7.6. OS/2 Warp Version 3 ΓòÉΓòÉΓòÉ
No real compatibility problems exist between ZipStream and OS/2 Warp Version 3
as such.
When accessing a shadow of a ZipStream path from the Workplace Shell, OS/2 can
display a dialog box similar to the one shown below
Click on 'OK' or 'Cancel' as the message can be safely ignored.
This error is due to a problem with the OS/2 Workplace Shell. A problem report
has been raised by Carbon Based Software. IBM Developers are currently working
on this problem and have advised that they hope to have a solution in the very
near future.
ΓòÉΓòÉΓòÉ 7.7. WORM Drives ΓòÉΓòÉΓòÉ
ZipStream is not suitable for use with WORM (Write Once Read Many) drives. The
reason for this that ZipStream uses lazy (background) compression, which means
that a file is first written to the disk in uncompressed form and then
compressed at a later time.
ΓòÉΓòÉΓòÉ 8. Problems Attaching to a Path ΓòÉΓòÉΓòÉ
Sometimes it is possible for ZSAttach to report an error when trying to attach
to an OS/2 path.
The most likely cause for this is that your config.sys will have a statement
similar to the one shown below:
lastdrive=H
This statement can be safely deleted from your config.sys.
ΓòÉΓòÉΓòÉ 9. Using ZSUnpack from OS/2 Boot Diskettes ΓòÉΓòÉΓòÉ
If you find yourself in the situation where you must boot OS/2 from diskettes
and need to access compressed files, you can use ZSUnpack from the ZipStream
Installation diskette to decompress any files you need to access.
ZSUnpack requires several ZipStream support DLL's to function. It is therefore
not sufficient to just copy the zsunpack.exe program to the OS/2 Installation
diskettes. Running ZSUnpack from the ZipStream Installation diskette will
ensure that all the required DLL's are available.
Due to the virtual memory requirements of ZipStream, we do not recommend that
you try to establish the ZipStream transparent compression system from boot
diskettes.
ΓòÉΓòÉΓòÉ 10. Trademarks ΓòÉΓòÉΓòÉ
ZipStream is a trademark of Carbon Based Software.
IBM OS/2 are trademarks of International Business Machines Corporation.
Pentium is a trademark of Intel Corporation.
ALL TRADEMARKS AND SERVICE MARKS ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS.