26 Jan
2011
26 Jan
'11
11:01 a.m.
Hae you looked
for activity on the bus lines, processor pins, SIMM
sockets, etc? It may be soemthing obvious.
Not yet. If I get sufficiently bored in the not too distant future, I'll
probably build up an ISA bodge-board for the HP16500B and see what's
going on. I asusme ther
are internal signal layers too, so resoldering both
surfaces may not be enough.
I have a sneaking suspicion it's a 4-layer board...