12 Nov
2014
12 Nov
'14
2:40 a.m.
Jim,
The microprocessor board looks like it came out of a Gemini D17 CNC
controller, circa mid 80's.
That was their own design electronics
If I remember correctly, the company was Cross-Trecker and then Kearny
& Trecker and then ultimately bought out by Giddings and Lewis.
G&L was running both the K&T electronics and their own 8000B control
concurrently on different products and finally switched over to Fanuc
controls
I believe that the K&T product line was ultimately discontinued.
G&L subsequently acquired FADAL machine tools, and ultimately closed
out that operation.
I also believe that G&L is now part of the MAG group, would have to
look that up to verify.
The first card with"flip chip" marked on it looks like a PDP8 or
possibly a PDP 11 card used in a Sundstrand control through the '70 to
early 80's.
It's been 30+ years since I worked on those antiques, brings back a
lot of memories.
The boards may very well be spares that were surplused out recently by
the company that I worked for since they (the company) closed several
facilities and were located within a mile or two where the boards are
located.
.
On 11/11/14, jwsmobile <jws at jwsss.com> wrote:
I can't tell for sure, but this auction may be for
PDP8 core board.
KT-KEARNEY-TRECKER-ASSY-KT83-0933-KT84-020-SYSTEM-BOARD
http://www.ebay.com/itm/181565552717
board is 6 across in size.
From what I could find out K&T used PDP8 for NC controlled machines at
some time.
There is also this sort of board. The silkscreen shows a Microprocessor
section outlined with a 40 pin ceramic gold chip.
I am going to query the vendor to get a picture where you can read what
is on the can, or get the text on the can. Maybe the thing is a Harris
part, don't know.
Since the listing is for Giddings and Lewis, which is either a
subsidiary or competitor of K&T it may be another completely different
system. It looks like K&T, G&L and Cincinnati Millacron had a number of
legal runnins as there were several lawsuits in the google hits when
looking these boards up.
CM used an OEM Microdata 1600, and later 3 generations of their own 1600
derived designs before moving on to other newer microprocessor scale
parts. The CM 800, and 900 and one later are all 1600s, or near
relatives os such. The 900 uses 8K, 16K microdata manufactured core
boards, and also the Ampex / CDC 32k core board. I buy all those that
show up cheap on the usual auction site.
Here is the processor board:
GIDDINGS-LEWIS-KT-KEARNEY-TRECKER-871-20410-05-SYSTEM-BOARD
http://www.ebay.com/itm/181564464339
Jim