PDP-8/A 128K memory - M8417 or M8418?

[Ethan Dicks]

On Wed, May 11, 2016 at 10:20 PM, Jack Rubin <j at ckrubin.us> wrote:
> I've been looking for a 128K MOS memory board for my PDP-8/A for a while...an M8418.
>
> None of my literature has the M8418 p/n but most of it may be too old...

I found one reference...

in: PDP8A_Schems_Apr81.pdf
page 199 of 216

At the top of the page, it says...

"P A R T S  L I S T      SHEET C1 of C3"

... and further down, it says...

LINE  ITEM  DOCUMENT NUMBER  PART NUMBER  DESCRIPTION
.
.
3          3                                        5012701-00
 ETCH BOARD (M8418)....

All other mentions in the file are M8417.

-ethan