I have one question:
How does it check, how much RAM is in it?
Boot shows 128K, but the board has 512K
Incidentally there is a .zip file on Bitsavers called SageSources. Unpack it,
and in Sources1 look at PROM2.TXT. That is part of the 68000 source
for the boot ROM and contains the RAM test.
-tony