25 Feb
2011
25 Feb
'11
1:38 a.m.
On Thu, 24 Feb 2011, Dennis Boone wrote:
No, he doesn't say that.
I suspect that
it is some sort of rom, but if anyone has a better
explanation I would be interested.
It's marked as containing microcode. The seller describes "specially
wound ceramic rods", so I'd guess it's conceptually similar to rope memory. Looks like this is one of at least two such
units to make a
full word, as the bit planes are numbered 16-31. Other markings on the
cards suggest it's from a Siemens System 4004. Teh internetz say a
4004 is a rebadged Spectra 70 (IBM 360 clone) they bought from RCA.
What are you talking about?!?
The page sais "Ampex Copper Core Memory Board 1976" and there are no
numbered planes, no markings from Siemens or the like, and it is clearly
not a rom containing microcode, it's just a plain "standard" memory board.
(Remember, this discussion is about Epay no. 320652132954)
Christian