[Techtoolslist] Can anyone identify this chip?

[Clay Cowgill]

I was blowing off the Mask ROM possibility thinking that there was no way
Who Dunnit had enough of a run to merit mask, but now that I think about it
that makes sense-- although it's not mentioned in the MAME driver comments,
Who Dunnit 1N is actually the same as Crossbow, Combat, and Catch-22... So
that makes sense to be mask after all.  (And it'll probably be identical to
those.)

-Clay 

-----Original Message-----
From: techtoolslist-bounces at flippers.com
[mailto:techtoolslist-bounces at flippers.com] On Behalf Of Rodger Boots
Sent: Tuesday, November 19, 2013 6:02 PM
To: Technical Tools Mail List
Subject: Re: [Techtoolslist] Can anyone identify this chip?

OK, here we go.  Teeray nailed it.  Datasheet attached, just need to strap
pins 26 & 27 to whatever the game uses to access this part and read it as a
2764.