> ..seems there's no solution since? Maybe any one a clue for a working 
> (older) kernel for the Challenge S? I don't mind the mezz-board and my 
> phobos G100 card won't work(for now) ;-)

i meant to get back to the list on this one:

the 33c95 on challenge mezz cards (used in the big iron as well as the S)
is undocumented, difficult to program, and requires microcode. it is
surrounded by enough weird glue logic that implementing a driver from
scratch would be "nearly impossible". sigh. no wide scsi for me.