Odd 11/23 (?) ROM carrier

Henk Gooijen henk.gooijen at hotmail.com
Wed Feb 10 11:56:30 CST 2016

-----Oorspronkelijk bericht----- 
From: Noel Chiappa 
Sent: Wednesday, February 10, 2016 6:17 PM 
To: cctalk at classiccmp.org 
Cc: jnc at mercury.lcs.mit.edu 
Subject: Odd 11/23 (?) ROM carrier 

Anyone know what this:


is? It has five chips, not six, so it's not the KEF11-BB CIS option. I've
tried Web searches on "57-27889-01", but not turned up anything useful.


All chips on the carrier have the text DC327C-3x (where x is
That lead me to "V-11 VAX chip RAM/ROM patchable control store".
And ... KA820-AA.
See http://www.cpu-galaxy.at/Boards/Boards_CPU/Boards_CPU.htm
in the mid of that page.  Nice page, hadn't seen that one before.
Cool looking chip!

- Henk

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