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- PsiZip V1.2F
- ------------
- Release date: 08 May 1997
-
-
- Description
- -----------
- PsiZip is a compression and file packaging utility for the Psion Series
- 3a, 3c and Siena palmtop computers.
-
- It is compatible with PKZIP v2.04g (PKWARE) for MS-DOS, Windows, UNIX,
- OS/2, and VMS systems, and also ZIP 2.0.1 (Info-ZIP) for MS-DOS and
- Windows. It is the ONLY program to provide effective and fast zip
- compression AND de-compression on the Psion!
-
- The PsiZip application includes many new and innovative features, of
- which these are just a few:
-
- * Improved compression. PsiZip makes use of the latest "Deflate"
- compression algorithm.
-
- * Unzip support. PsiZip also has the needed algorithms to support
- the unzipping of zip files.
-
- * Subdirectory storage. PsiZip can find and store subdirectory
- pathnames within a zip file. Files can then be restored to
- their original subdirectories, or the subdirectories may be
- re-created.
-
- * Password encryption. Sensitive data files can be scrambled
- with password protection (Registered users only!)
-
-
- Installation
- ------------
- PsiZip is distributed as a single zip archive. You will need an Unzip
- program which can cope with standard zip formats to unzip the archive.
- Examples include WinZip (Windows) or the original PKUnzip (MS-DOS),
- but there are programs available which run on almost every computer type.
- Then follow these 3 simple steps:
-
- 1. Unpack PsizipXX.zip to an empty directory and check the contents.
- If they are not as follows, then the archive is either damaged or has
- been tampered with:
-
- Psizip.app The PsiZip application
- Readme.txt This readme file
-
- 2. Copy Psizip.app into an \APP\ directory on any of your Psion disks.
- NOTE: Psizip.app is suitable for storage on Flash SSDs.
-
- 3. Install PsiZip from the System screen with Psion-I. or use the menu
- and select Apps | Install (on English Psions).
-
- Memory requirements
- -------------------
- PsiZip itself uses about 80k of memory when running, plus about 48k
- for archive actions (Add, Delete, Extract, View, Test, Comment) and
- 12k for every additional 100 files in an archive. This option can be set
- via 'Set preferences' (Psion-Q or Menu, Special | Set preferences | Total
- files). This allows values from 100 to 500 for the maximum number of
- files in an archive.
-
- PsiZip also makes a temporary copy of each archive it works with in a
- disk/directory that the user specifies (again using 'Set preferences')
-
- So, if the disk for the temporary files is set to the Internal disk, and
- the archive is also on the internal disk, then the amount of memory
- required for PsiZip to run will be this:
-
- Roughly 128k of internal memory for PsiZip program itself
- + Space for a temporary copy of archive
- + Space for the final archive file.
-
- To make sure the actual program has enough System Memory from the internal
- disk, the disk for temporary files can be set to an SSD disk (via 'Set
- preferences').
-
- If you do use an SSD then it MUST be a RAM SSD. If you use a Flash SSD,
- then any temporary files created will be deleted, but space will not
- be recovered until you re-format the disk (See the Psion User Manual for
- details about Flash and RAM SSDs).
-
- To give the user even more flexibility, PsiZip also allows you to use
- a remote drive or the Cyclone floppy disk drive as a store for temporary
- files (although this will slow down the compression process).
-
- After the archive operations are completed, all temporary files are
- deleted.
-
- NOTE: If you set the path for temporary file to the same directory as
- the one which holds the final archive, the temporary copy of
- archive is not copied and then deleted, it is just renamed.
-
- The amount of space needed for the temporary files and the final archive
- and also the amount of compression obtained will depend on the files
- you wish to compress:
-
- Program files (.OPA, .APP, .OPO and .IMG) typically compress by
- about 5% to 10%
-
- Other files (such as .TXT, .SPR, .AGN,...) can be compressed by
- up to 60%, and in some cases even more!
-
- How many files can PsiZip allow in a zip archive?
- -------------------------------------------------
- A zip file may contain a maximum of 500 file entries under PsiZip.
- The actual maximum value depends on the length of the file names
- (including the full path if stored) and file comments.
-
- PsiZip requires 12k system memory for every 100 files, thus 500 files
- requires 60k system memory.
-
- Usage summary
- -------------
- The following options are available both on the menu and by using the
- relevant hotkeys. PsiZip has been designed to be very easy to use and
- comes with an intuitive User Interface. As a result, you should be able
- to use PsiZip without even reading this file or the Help screens.
- Full on-line help is also available within the program - just press
- the 'Help' key.
-
- Use:
-
- * 'New archive' to create a new zip archive, then..
-
- * 'Add file' to add files to the archive. Note the 'Options...' line in
- the resulting dialog. The options allow you to:
- 1) Select whether PsiZip stores
- the directory of the files that
- you are adding
- 2) Select an option to add a comment
- to each file.
- 3) Select whether each file will be
- password protected (and therefore encrypted)
- 4) Allows you to select if files are
- 'Stored' or 'Compressed'
-
- * 'Open archive' to open an existing zip archive
-
- * 'Extract file' (or just press Enter over a file or selected files)
- to extract file(s) from the archive.
-
- * 'Delete file' (or just press Delete over a file or selected files)
- to delete file(s) from the archive.
-
- * Left, Right, Home and End to move around the displayed columns.
-
- * Up and Down to move rows.
-
- Menu...
- ----
-
- Archive
- -------
- Archive | New Archive
- Create a new archive.
-
- Archive | Open Archive
- Open an existing archive.
-
- Archive | Close Archive
- Close the currently open archive.
-
- Archive | Information
- Display information about the open archive
-
- Archive | Move Archive
- Move archive to a different disk or directory
-
- Archive | Copy Archive
- Copy archive to a different disk or directory
-
- Archive | Rename Archive
- Change the name of the current archive
-
- Archive | Delete Archive
- Delete an archive
-
- Actions
- -------
- Actions | Add file
- Add files to the open archive
-
- From the 'Add file' dialog, there are further settings which
- can be selected by pressing Tab on the 'Options...' line:
-
- 'Select by'
- When this option is set to 'Directory' , PsiZip will search the source
- directory for subdirectories. If any subdirectories are found, PsiZip
- searches them for files. If a further level of subdirectories is found
- in a subdirectory, PsiZip will search these as well.
-
- NOTE: Full paths are not stored when the 'Save dir info' is set to 'No'
-
- 'Compression'
- PsiZip provides two different methods of compression.
- To output the smallest files possible, specify the 'Compress' method. Using
- 'Store' (no compression) is useful when archiving files which will either
- not compress or compress very little. This would generally be true when
- archiving ZIP, ARJ, GIF, JPG files as these are already compressed.
- By specifying no compression PsiZip will store the files directly rather
- than first attempting to compress them.
-
- 'Save dir info'
- This option sets whether full path names are stored with each file.
-
- 'File comment'
- This is pretty obvious, it allows you to write a comment onto each file
- as it is stored. This can be useful if you want to write a small
- reminder about the contents of each file in case you forget.
-
- 'Password' (Registered users only)
- By specifying this option you may encrypt data as it is compressed by
- PsiZip. This feature of PsiZip causes the information contained within
- a zip file to be 'scrambled'. A file which has been scrambled will be
- unreadable until extracted with the same encryption key (which is derived
- from the password which you supply).
-
-
- Actions | Delete file
- Delete file(s) from the open archive
-
- Actions | Extract file
- Extract file(s) from the open archive
-
- Again, there is a sub-option from the Extract file dialog:
-
- 'Restore dir info'
- This option uses the path names that have been stored in the zip
- file by PsiZip. If the stored paths do not exist in the destination
- directory, they will be created.
-
- Actions | View file
- View files in the open archive using Word or Program editor (which
- is set via 'Set preferences')
-
- Actions | Tag all/Untag all
- Select/Deselect all files in an archive
-
- Actions | Test archive
- Test the integrity of an archive and check for errors.
-
- Actions | Archive comment
- Add/Edit the archive comment.
-
- Special
- -------
- Special | Set preferences
- Sets the preferences for PsiZip. All settings are saved to the file
- \OPD\Psizip.ini on the default disk.
-
- These are the options available:
-
- 'Style'
- Set the font style (eg Swiss/Roman, Bold...)
-
- 'Columns'
- Allows you to set which columns of information are shown on the
- PsiZip screen.
-
- 'Grid lines'
- Sets/reset the grid lines for the main screen (i.e. if they're shown
- going up, down or both)
-
- 'View file in'
- Select the file viewer to use (Word or Program Editor are the only
- choices at present).
-
- 'Total files'
- Defines the maximum number of files PsiZip will allow in the archive
- (100-500). Every 100 files takes 12k system memory, thus setting 500
- files takes 60k additional system memory. If you never use archives
- with more than 100 files in them, then set 'Total files' to 100.
-
- 'Temp dir'
- Sets the path for the temporary files.
-
-
- Special | Zoom in/Zoom out
- Change the screen's font size.
-
-
- Special | Register
- Allows you to enter a registration code for PsiZip. Once PsiZip is
- registered, this menu item will no longer be shown.
- 1) Enter your personal registration code EXACTLY as supplied using
- upper or lower case as required.
- 2) Press Enter
-
-
- Special | About
- Display the About screen with version, copyright contact details and
- registration information.
-
-
- Special | Exit
- Exits PsiZip.
-
-
- Tips & Tricks
- -------------
- Creating the temporary files on alternate disk
- ----------------------------------------------
- Every time a zip file is updated, PsiZip creates a temporary work file.
- When the modifications to the zip file are successfully completed, the
- original zip file is replaced with the temporary work file.
- This means you must have at least as much additional disk space available
- as was used by the original zip file.
-
- For Example: If you have an existing zip file of 50k, and you are adding
- another file to it that takes 10k compressed, you need additional
- workspace of at least 60k during the update process.
-
- The 'Set preferences', 'Temp dir' option allows you to create the temporary
- zip file on a disk different from the one on which the original zip file
- resides. This allows you to update large zip files when space is limited,
- such as a large zip file on a internal disk.
-
- If the temporary directory is on a RAM SSD, PsiZip's operation becomes
- slightly faster.
-
- Add comments for new files
- --------------------------
- Each individual file contained within a zip file may have a comment
- attached to it. Comments are useful for identifying files, especially
- if you need to go back months later to look at a file, or if you are
- sending the file to someone else. Each comment may be up to 128
- characters long, including spaces and punctuation.
-
- Add comments to a zip archive
- -----------------------------
- Each zip archive file may have a comment embedded into it. A comment
- may be added to an existing archive, or added when an archive is first
- created. It can be up to 1024 characters long. PsiZip provides a built
- in editor (with Bring, Copy and Paste functions) for you to create an
- appropriate comment.
-
-
- Bug Reports / Comments
- ----------------------
- Please send all bug reports and comments to the author (Serge Shestopalov)
- at the address shown in the Support section below.
-
-
- Registration
- ------------
- PsiZip is Shareware, which means you can try the program before deciding
- to purchase it, and you may give copies of the trial version to other
- Psion users to try. However, you cannot legally continue to use the
- program if you decide not to register it, nor may you give copies of the
- registered version or the registration code to others. You may use the
- trial version for 30 days, and I will provide assistance to get the
- program to work with your Psion during that period, but further support
- is available only to registered users.
-
- The registration fee is UKP รบ15 or USD $25 for cash, if you use
- a registration service then the fee is as shown below.
-
- Payment can be made by...
-
- * Cash only (no cheques please) sent to
- Serge Shestopalov
- Balvu 15-56
- Riga, LV-1003
- LATVIA
- EUROPE
-
- * GO SWREG on CompuServe, using the ID number 13291 ($29.50)
-
- * Using the RegNet service on my World Wide Web page ($29.50)
-
- *Important note*: Please do not send cheques. The local banks all
- charge an excessive amount to cash them. The
- easiest way to register is by sending cash in a
- good STRONG envelope (between two pieces of paper
- so you cannot see through the envelope).
-
- Once registered, you will receive a personal code to free PsiZip from
- the nag screen and limitations. There is no need to re-install.
-
- Please include you full name and the version number of PsiZip.
-
-
- Support
- -------
- This product is supported via e-mail only.
- Please send all messages to:
-
- Internet: dustman@stoat.riga.lv
- CompuServe: 100526,1317
-
- The latest version will always be available from my Web page:
-
- http://ourworld.compuserve.com/homepages/Serge_S/
-
- Disclaimer
- ----------
- Although the program has been tested extensively, there is no guarantee
- that it is error free. Please make backup copies of all your important
- data!
-
- The author will not be liable for any damage or consequential loss caused
- by any error, defect or failure of the application.
-
- History
- -------
- 11/10/96 - v1.0 PZip release, Zip only.
-
- 01/12/96 - v1.1 alpha release: GUI added, still Zip only.
-
- 24/02/97 - v1.2a beta release, Unzip added.
-
- 08/05/97 - V1.2F final released
-
-
- Thanks
- ------
- To my beta testers....
-
- - Jochen Siegenthaler (100127.3167@compuserve.com)
- - Phil Spencer (nicko@nildram.co.uk)
- - Steve Litchfield (slitchfield@cix.compulink.co.uk)
-
- -----------------------
- PsiZip and this readme file are Copyright (C) Serge Shestopalov 1997.
- All Rights Reserved.
-