Strange i-con Unibus (?) board

[Pontus Pihlgren]

On Fri, Dec 05, 2014 at 06:03:35PM -0500, Sean Caron wrote:
> 
> http://www.ebay.com/itm/Vintage-Computer-Memory-Digital-DEC-logo-1216988-board-from-PDP-11-or-VAX-/261685664915
> 
> I'm really curious what all those SIP hybrids are running down the one side
> of the board. I see it's got no less than 8 74181 ALUs so I figure this has
> got to be some kind of processor?

I looked at a picture of an MXV11 board today and I noticed similar, but 
not identical, SIP hybrids (as you call them):

http://www.cosam.org/images/pdp11-23/mxv11-b.jpg

Perhaps a clue.

/P