maybe i should do some more testing maybe the fpu or nic doesn't work with out that rom,

Click to expand...

I have got a pair of SI's, none of them have a Rom simm.

One also has a fpu riser and no Rom simm is required.

Those Rom simms are really sough-after (for SE/30 mainly, to get a Clean Rom unit) as far as i know, only the early models used the Rom simm (later ones were integrated to the logic board, but all have the socket anyway... mines are just empty)

The rule is, if the unit has no Rom in the logic board, it will no boot without the proper Simm

The 25 Mhz hack is pretty easy to do, and cheap as well:

viewtopic.php?f=29&t=17923