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 / 80 |--|SSEMBLY |  ODERS
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Doug Torrance
profzoom@hotmail.com
http://z80.us.fornax.com
http://www.pubweb.nwu.edu/~dat927/zoomlabs
==========================================

Concentration v1.31 for Ion v1.4
Jan. 17, 2000
Size - 1438 bytes (concentr.83p)
       1443 bytes (concentr.8xp)

included in this .zip file:
concentr.z80 - the source
concentr.txt - this info file
concentr.83p - the game (TI-83)
concentr.8xp - the game (TI-83+)

The object of Concentration is to turn over all the cards on the table.  You turn over two cards at a time.  If the cards match, they remain face up.  Otherwise, they are put face down again.

Keys-
arrow - move
[2nd] or [ENTER] - turn over card
[MODE] - exit

Scoring-
For every set of two cards you turn over, your score increases by one--try to completely turn over all the cards in the least number of tries!

Version History-
various demos - posted on my website to show how Concentration was progressing
v0.9beta - first fully operational release, with source and readme included
v1.0 - full release!  improved the gameplay a bit (don't have to press 2nd after flipping over two cards to move on to the next pair) 
-optimized 141 bytes!  thanks to Sam Heald for 45 of these!
v1.01 - for Crash, utilizing Crash's built-in routines to make it a mere 1463 bytes!
v1.3 - now for AShell83! (also works with SOS)
v1.31 - now for Ion!
-fixed a bug in the high score initials input routine
-optimized, down to 1438 bytes for the TI-83 version

Future Versions-
This updated version is being released simultaneously with the Crash version for the TI-82.  Unless there are any more bugs found, I doubt there will be future versions.

Acknowledgements-
-Sam Heald, Dines Justesen, Kouri, and OBD for their Blockbuster optimizations, which really helped me learn a lot - a lot of their code was adapted for Concentration
-Jeremy Wazny and Harper Maddox for their pointers on how to go about shuffling the cards

Thank you!




