10 Feb
2003
10 Feb
'03
2:43 p.m.
Can anybody tell me more about this core memory assembly ?
The assembly consists of three wire-wrapped "BICM9" backplanes, one
of these holds four 8K x 9 core memory boards, the other two contain
several modules with names like "M9INH", "M9SNS" and
"M9SEL".
Logic on the various boards appears to be mixed TTL/DTL (!) in
standard DIL packages, most boards are from 1972.
Pictures:
http://www.digischool.nl/~erikb/identify.html
Thanks in advance,
Erik.
10 Feb
10 Feb
3:40 p.m.
Hmmm the modules look familiar, we used to have a Honeywell 3200 (not
sure for certain of the model) at work that we ran till 1988. It used
memory modules like that ... I've got a couple I saved as souvenirs. I
would have to dig them out of my attic to be sure. We also had three
level sixes, one in our main plant and two at other plants.
On Mon, 2003-02-10 at 10:17, erikb(a)digischool.nl wrote:
Can anybody tell me more about this core memory
assembly ?
The assembly consists of three wire-wrapped "BICM9" backplanes, one
of these holds four 8K x 9 core memory boards, the other two contain
several modules with names like "M9INH", "M9SNS" and
"M9SEL".
Logic on the various boards appears to be mixed TTL/DTL (!) in
standard DIL packages, most boards are from 1972.
11 Feb
11 Feb
10:29 a.m.
Can anybody tell me more about this core memory
assembly ?
The assembly consists of three wire-wrapped "BICM9" backplanes, one
of these holds four 8K x 9 core memory boards, the other two contain
several modules with names like "M9INH", "M9SNS" and
"M9SEL".
I've never seen this unit, but I'd guess that the 'INH' board is the
Inhibit driver (bascially data write), the 'SNS' board is the Sense
amplifier (data read) and the 'SEL' board is the Select circuit (address).
-tony
7938
days inactive
7939
days old
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