cctalk Digest, Vol 24, Issue 22

Michael Thompson michael.99.thompson at
Wed Jun 22 12:12:54 CDT 2016

> Date: Tue, 21 Jun 2016 18:08:49 -0700
> From: Glen Slick <glen.slick at>
> Subject: Re: PDP-11/40 modified to be a PDP-11/23
> What boards exactly? Are you sure it's not an M7133 11/24 board instead?
> From front to back in the AB slots:

   - M8186, KDF11-A, 11/23 CPU, 18-bit addressing only
   - M8044-DM, MSV11-DD, 32-Kword 16-bit MOS RAM
   - M8043, DLVJ1-M, 4-Line Asynchronous Interface
   - M7940, DLV11, Serial Line Unit (SLU, Async)

A custom interface to the front panel is in the CD connectors of the first

I will post pictures of the boards on the RICM WWW site.

Michael Thompson

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