CryptoSolv 1.0
By Matt Mullins

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1. History

Pretty much, I wanted to do cryptograms more easily in
English class (we had a nutcase teacher that would give us
cryptograms as assignments).  So I wrote this program (and
an equivalent on the computer).

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2. How to Use

Send crypto.89p to your calculator (it's BASIC, so there
are no requrements other than a TI-89).

Start the program by typing crypto() at the home screen.

You should see a colon (":"); this is where you type
commands.  Type "a" and press enter, and you will see "<".
Here, you can type in the cyphertext and press enter.
Then you see ">".  Here, type in the cleartext equivalent of
the cyphertext you just typed.  Press enter to add this to
the "database".

To decode something, at the colon-prompt, type "d" and press
enter.  You will see a "{".  Then type the cyphertext and
press enter.  The cleartext equivalent will be displayed.
Spaces are preserved, and unknown letters get transformed to
an underscore.

You can reset the "database" by typing "r" at the prompt and
pressing enter.

You can save the "database" by using the "s" command; you
can load what you have saved by using the "l" command.

HINT: This program is much easier to use if you have the TI
keyboard.

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3. Credits

Drubu Productions - making me host this online instead of
     holding it for myself.
TI - Wonderful calculators and link cables
TIcalc.org - Great selection of great programs (and some
     awful ones, too)

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Copyright © 2003 Matt Mullins.
Any modifications to this program and readme file must be
submitted back to the author; you WILL be included in the
credits section if your submission is used in a later
release.