16 Jun
2020
16 Jun
'20
2:29 p.m.
On Mon, Jun 15, 2020 at 1:33 AM Chuck Guzis via cctalk
<cctalk at classiccmp.org> wrote:
On 6/14/20 8:41 PM, dwight via cctalk wrote:
I happen to have the guts for a 2MB IN-1670 memory system for the
PDP-11/70 - backplane and cards, but no box and no PSU.
https://books.google.com/books?id=fB-Te8d5hO8C&pg=PT1&lpg=PT1&d…
It's a stack of 16 memory cards covered in 4116 DRAMs and a couple of
control/management boards that cable over to the 11/70 the same way a
DEC MK11 box does.
... Do remember that Intel's claim to
fame wasn't just micro processor. They were one of the first to do
MOS RAMs for big machines. They were more into solid state memory
systems than uPs, until after the 8080.
Intel Memory Systems Division was largely responsible for saving Intel's
bacon in the early 1970s...
However, selling DRAM assemblies for various minis (e.g. DG and DEC) as
well as S/370 add-on memory amounted to a large portion of their early
sales. Have a look at section 7 here:
https://johncargin.files.wordpress.com/2013/12/intel-catalog-1973.pdf
Excellent reference. A couple years too old for my DEC memor system,
but I happen to have a tray of MSC-4 parts and some early SRAMs,
DRAMs, and EPROMs documented there.
-ethan