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- s3uz150l.zip
-
- This archive contains an EPOC binary for version 1.50 of Unzip
- for Psion Series 3, 3a, HC, MC400 and Workabout machines, plus
- some documentation.
-
- This port is based on the Samuel H. Smith / Info-ZIP team source
- code, the home FTP site for which is ftp.uu.net:/pub/archiving/
-
- The home FTP site for the EPOC port is:
-
- sunsite.doc.ic.ac.uk
- /computing/systems/handhelds/psion/icdoc/utils/
-
- where the current version is in files s3uzip15s.zip and
- s3uzip15l.zip - being the small and large variants, respectively
- (see below). Note that these filenames differ from the canonical
- ones listed below, due to the naming conventions for automatic
- update used at Imperial College. If downloading for further
- distribution, please rename the archives to s3uz150s.zip and
- s3uz150l.zip respectively, to conform with 8.3 format.
-
- Version 1.50 incorporates some minor enhancements to the screen
- output, to better suit the wider 3a screen. A side-effect of
- these changes is that the output mis-displays under the
- DOS-hosted Series 3 emulator. This is a known problem with the
- emulator, and there is nothing to be done about it - without
- restricting 3a users to a 40-column output window.
-
- Version 1.50 is available in two variants:
-
- 1.50s -- the small variant, which handles version 2.x zip
- archives only;
-
- 1.50l -- the large variant, which handles all zip archive
- versions, including the now obsolete version 1.x type.
-
- The variant is indicated by a suffix letter in the name of the
- distribution zip file, after the version number:-
-
- s3uzNNNs.zip contains the small variant;
- s3uzNNNl.zip contains the large variant.
-
- The small variant is intended for use on a Series 3 classic,
- where memory is at a premium. The large variant is best used
- on machines with at least 512K.
-
- Version 1.41 incorporated a workaround for a bug in Pkzip-made
- archives, whereby the Huffman distance tree may be incomplete in
- some circumstances. The program will note this by displaying
- '(incomplete d-tree)' after the file name, when extracting or
- testing an archive. Archives created with the generic version of
- Zip do not exhibit this problem.
-
- Version 1.4 adds support for external applications that invoke
- UNZIP.IMG, specifying the destination directory to which files
- are to be extracted. See the enclosed file APPNOTES.TXT for more
- information.
-
- Version 1.3 added support for unzipping from remote files across
- the serial link. This did not work in prior versions due to the
- failure of the CLIB stat() function across filesystems. See below
- for an example of remote unzipping.
-
- UnZip requires considerable free memory to run, so its not
- suitable for unzipping other than small files to the internal
- drive.
-
- To use interactively on Series 3/3a machines, you need version
- 1.1 of RUN.APP (included in this archive) as the front-end for
- the UNZIP.IMG file, or a similar shell.
-
- See the enclosed file RUN.DOC for brief notes on installing and
- using the RUN utility. Quick quide: create a \RUN directory and
- copy UNZIP.IMG there; copy RUN.APP into an \APP directory, and
- install it on the system screen by keying Psion-I.
-
- Here are some examples of the use of the 'Initial path' parameter
- with UnZip:
-
- Command line: -l a:\transfer\myzip
- Initial path:
-
- Command line: -l myzip
- Initial path: a:\transfer
-
- Where only a listing of the archive contents is requested, the
- two forms above are identical. Where an archive extraction is
- specified however, the 'Initial path' parameter specifies the
- directory to which the files archived should be extracted. For
- example:
-
- Command line: a:\transfer\myzip
- Initial path: b:\
-
- will cause the files in MYZIP.ZIP in the specified directory to
- be extracted to the root directory of drive B. Note that the full
- path name of the archive must be specified on the command line.
-
- As of version 1.3, remote files can be unzipped using Unzip and
- Mclink or Slink. If Slink is used, it must be version 1.2 or
- later.
-
- Command line: rem::f:\download\newstuff
- Initial path: a:\
-
- will extract the remote zipfile on the PC to the SSD in drive A
- on the S3. This is the fastest way to move bulk data from PC to
- S3.
-
- -------------
- David Palmer
- Edinburgh
- Scotland
- June, 1996
-
-