the number of chips listed is the minimum number of chips..
my 4 chip 128MB sdrams only reports 60MB of memory.. I didn't let it go all the way to windows, so maybe I'll give that a try and see if it comes up with anything..
On a further note, I read somewhere that you can stack memory, allowing all pins but the chip selects to contact the chips underneath, and tie off the chipselects to the remaining unused ones..
for those desperate for 256, this may be the way to go...