(MESS) added handling for a generic rom+ram cart (as needed
by x07 expansion cards) and converted x07 and vii to use generic
cartslot code. nw.
new Americana (Poker) game

New Game Added
---------------------------------
Americana (9131-00) [Brian Troha, The Dumping Union]
(MESS) mekd2.c: after several investigations, I came to
the conclusion that .d2 files are some sort of RAM snapshot
and not a cart format, so converted the driver to use quikload. 
anyway, I had not actual file to test, so if you have any please
contact us to the MESS boards. nw.