after two days of heavy usage i can proudly say that i haven't had a single freeze with the command lines:
ACATune -maprom * p -fastchip on -cache on -burst on >NIL:
CPU cache burst >NIL:
i have also changed the mask and buffers of my sfs formatted hd slightly. at least some of my problems occured because of data that got corrupted when being copied from pcmcia-cf-storage to the ide hd. i for now generally leave my hands off the chipcache, z2cache and z2fast. never change a running system :-)
hopefully it is not a premature conclusion to say, my ACA works PERFECTLY!
best regards, ebs.
ps: i have really had to google the meaning of premature ;-)