RAM location $80 only holds the value of the control byte after a
supercharger load. It would only matter if you attempted to latch a new
control byte into the Supercharger. The Cuttle Cart manual, available for
download from atariage.com, has full details of how the Supercharger mode
works from a software standpoint. It's the last section of the manual.
1FF8/9 are the only active addresses if you've loaded it with RAM writing
off. (The standard way to load 2K and 4K games, likely always a disaster
if you loaded non-SC games with RAM writing enabled.)
Does it crash a modified Supercharger? If not you're likely missing some
access to 1FF8/9. If so, it's probably the hardware timing glitch that
screws up the collision detection in Air-Sea Battle (and Haunted House?? I
think that's the other one.)
Chad
============================================
Chad Schell
gamer@xxxxxxxxxxx
http://www.schells.com/
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