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17 Bit Software 3: The Continuation
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17-Bit_The_Continuation_Disc.iso
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amigan
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amigan 17
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zorklook
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zorklook.doc
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1994-01-27
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INFOCOM FILE UNSQUEEZER
When run, the program will unsqueeze the data files of Infocom
adventures and display them on the screen.
Several points need to be known when examining this data-
(1) A large amount of the displayed data is not ASCII text and so will
appear as random data.
(2) Common words are stored as token values in Infocom data files, and
so even random data will appear to be interspersed with whole
words.
(3) The data is compressed such that three characters are stored for
every two bytes. This means that if, for example, you start
examining a file at an even number, then any word that starts at
an odd number will appear as random data. Therefore, to get a
complete scan of every message it is necessary to do two passes-
the first starting at zero and the second starting at one.
Despite these annoyances, a lot of information can be extracted,
especially towards the end of a file where the bulk of the
descriptions are stored.
To use the program, enter the full pathname of the data file to
examine e.g. df1:zork1/story.data, then enter the starting location in
bytes. To examine the whole file you would answer 0 for the first pass
and 1 for the second pass.
A good place to start listing is towards the end of the file around
70000. For example, try these values for the various files.
ZORK I .......... 68200
ZORK II ......... 72300
ZORK III ........ 70100
INFIDEL ......... 70700
(You should set your stack to 10000 before running).
Brian Parker
19 Barcelona Street
Wishart, Queensland, 4122
Australia