Yes, a 128 MB EDO simm can be used on the blizppc.
However, do note the voltage. The blizppc (and all other amiga boards) use 5v simms. Lately I've seen several norwegian online computer stores selling reasonably priced 128 MB simms, but these were all 3.3v, which means they'll be fried on the blizppc.
-Paul
