Make sure to try a few different brands of memory. I have only been able to get some 32mb SIMMs to work with this board.
The jumper settings are also at the big book off amiga hardware site.
Robert17 wrote:
hey all just got one of the above, it came with 24mb ram but I'm trying to get 2 x 32mb simms to work with no luck, I've looked over at amiga hardware for the jumper settings but it's unclear as to which way up the memory daughterboard would be whilst making the settings, all I know is one way I get no memory from the cyberstorm, the other way I get a yellow screen on boot.
any help appreciated 
Robert