On Thu, 28 Mar 2002, Zane H. Healy wrote:
> >This hex-width board was found sitting in a UNIBUS backplane. It looks like
> >it may have more than two PCB layers. The metal handle, where the board
> >number is usually stamped, is unmarked; no board number is stamped there. On
> >the front side, top left, is "AD413A MADE IN USA". The top middle had the
> >"200415-03" handwritten on it, but that has been crossed out by a marker,
> >and "200850-02" appears beneath it. The top right has "S/N 5781"
> >handwritten. There are two 50-pin BERG (maybe formatted Pertec) connectors
> >at the front top. On the back of the board, at the top right, is "MRX42
> >200255-02", machine printed. A little to the left of that is "3183",
> >handwritten.
> >
> >Google has returned nothing. What have I here?
>
> Just a major WAG, but since it says AD413A in one spot it could be an
> "Analog to Digital Converter". Though two 50-pin connectors seem an awful
> lot for that.
>
> When you say 50-pin the first thing that comes to mind is SCSI, HOWEVER, I
> think it's safe to say it's not that based on the chips. There is
> something else that uses 50-pin connectors, but I'm to tired to remember.
Eight inch floppy disk drive.
- don
>
> Zane
> --
> | Zane H. Healy | UNIX Systems Administrator |
> | healyzh_at_aracnet.com (primary) | OpenVMS Enthusiast |
> | | Classic Computer Collector |
> +----------------------------------+----------------------------+
> | Empire of the Petal Throne and Traveller Role Playing, |
> | PDP-10 Emulation and Zane's Computer Museum. |
> | http://www.aracnet.com/~healyzh/ |
>
Received on Thu Mar 28 2002 - 16:01:56 GMT