Re: Can anyone identify this chip?

What engineers will do to avoid one 74138.

On Tue, Nov 19, 2013 at 9:51 PM, Clay Cowgill <c.cowgill@comcast.net> wrote:

> 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@flippers.com
> [mailto:techtoolslist-bounces@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.
>
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Received on Tue Nov 19 22:53:50 2013