Aquired PDP 11/23

Pete Turnbull pete at
Sun Mar 12 15:31:22 CDT 2017

On 12/03/2017 17:24, Noel Chiappa via cctalk wrote:
>     > From: Devin Davison
>     > This past week I managed to pick up a  pdp 11/23.
> Nice system; the CPU has the MMU and FPP

And it's a Rev.D (you can tell from the jumper layout), so full 22-bit.

> you've got what's probably a 256KB
> memory card (an NS23M - documentation is available - depending on the chips,
> it can be 64KB or 256KB - if the former, let me know, I'll swap you a 256KB
> one)

It has 4 x 9 x 4164s, so it's 256KB with parity.

> and I think the pair of quad cards are probably an RLV11.

Yes, they're an RLV11.

Pete Turnbull

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