Its not an Olivetti M20 but might be a M30 or M40. These were Mini class machines.
It would be towards the last of the Z8000 with a MMU.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Ken Seefried via cctalk
<cctalk at classiccmp.org>
Sent: Wednesday, March 22, 2017 6:26:38 PM
To: cctalk at
classiccmp.org
Subject: Z-8000 something on eBay
I don't have any idea what this is but it appears to have Z-8000
CPU+MMU chips. Perhaps an Onyx or S8000 CPU card? I know some folks
here are in to that sort of thing.
http://www.ebay.com/itm/NOS-Vintage-DSC-MP-4-EPC-Rev-D-K-Expansion-Board-Ca…
KJ