On 10 Nov 2008 at 16:05, Eric Smith wrote:
  Not really.  You'd have thousands of very fine
wires, all looking
 identical, that pass through some cores and go around others (on average
 perhaps 33 through each core), and packed incredibly densely.  Even with
 very high resolution scans from multiple angles I don't think you could
 expect to extract the data visually. 
Okay, I see.  Regardless--if it's that type of memory, then failure
to read it electrically could use a visual method as a fallback.
After all, these things were assembled (and one would expect,
inspected) manually.
Did some of the S/360 machines use ferrite ROM for their control
stores?  360/40 perhaps?  I believe some also used capacitive ROM
(360/30?).
Cheers,
Chuck