4MB SIMMs in a 4D/25

[Larry Thorne]

We're about to try installing some 4MB SIMMS in one of our 4D/25TGs.
I've heard rumors that a certain ROM revision level is required
for the PI to recognize 4MB SIMMs.  Is this correct?  If so, what
ROM revision level is required?  And, if a ROM revision level is required
that's different from the one we have, how do we get the "new" one?

Thanks in advance!

Larry Thorne
larryt at ae.msstate.edu