RE: Asteroids disassemblies

> Try this comparison:
> <http://www.centipede.plus.com/otherstuff/asteroids.htm>

Thanks Phil! Here's a list of points of interest in the changes that were
made:

1) A zero page variable was added (shifted everything down by 1)
2) Minor tweak in the L689A/689D area
3) L693f/L693b Has an additional check for something
4) L69cd/L69cf Looks to be doing clearing on a few bits before the OR
5) Code added @ 6DB4 (a call)
6) Additional coded added @ L6e15 (new ROM)
7) Procedure removed @ L6F26 (old ROM)
8) An additional call and tweaking @ L7249/L724f
9) Additional code added at L732d
10) Procedure added @ L73b2
11) Procedure added @ L7d45 - looks like this one got moved from L6F26
12) Additional call @ 7f25-7f28
13) Some reshuffling from 7f4f-7f6d
14) Lots of code added at 7fab to coalesce controller readings into a
single byte

Looks like most of the code there is to support #14.

-->Neil

-------------------------------------------------------------------------------
Neil Bradley "The true axis of evil in America is the brilliance of
Synthcom Systems, Inc. our marketing combined with the stupidity of our
                          people.." - Bill Maher
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Received on Mon Nov 22 17:27:44 2004