Re: Can anyone identify this chip?

The attachment was only 230k. The person that really needed it has it
(sent it directly to him).
On Nov 21, 2013 12:39 AM, "David Shoemaker" <davids@oz.net> wrote:

> I never ended up getting any of the attachments. And 2mb is not an issue
> for me :)
>
> -----Original Message-----
> From: techtoolslist-bounces@flippers.com
> [mailto:techtoolslist-bounces@flippers.com] On Behalf Of John Robertson
> Sent: Wednesday, November 20, 2013 7:49 AM
> To: Technical Tools Mail List
> Subject: Re: [Techtoolslist] Can anyone identify this chip?
>
> Hi Rodger,
>
> Please resend your attachment, I've increased the size allowance to 2000kb
> (2mb) - hope that isn't a problem for anyone!
>
> John :-#)#
>
> On 11/19/2013 6:01 PM, Rodger Boots wrote:
> > 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.
> >
> >
> > On Tue, Nov 19, 2013 at 7:31 PM, Clay Cowgill <c.cowgill@comcast.net>
> wrote:
> >
> >> That could be an 8Kx8 EEPROM. The '2365' part is jogging a memory
> >> way in the back of my brain from decades ago while making a 'flash
> >> cart' for an Atari 2600 development system. ;-)
> >>
> >> I think the VTI part is correct-- the logo on the chip looks like:
> >> http://www.xsmicro.com/parts/VTI/2365-1181/
> >>
> >> Maybe try reading it like a 28C64?
> >>
> >> I'd wager a guess that it was the same place Murata bought, but back
> >> when they started out they were just making crosses for other
> >> manufacturers to get a start before doing their own stuff. (So like
> >> Sipex and Macronix that started off making Maxim RS232 chip copies
> >> and commodity EPROMs as a way to pay for their R&D of their own stuff
> >> which would eventually take over the
> >> catalog.)
> >>
> >> -Clay
> >>
> >> -----Original Message-----
> >> From: techtoolslist-bounces@flippers.com
> >> [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Joseph
> >> Magiera
> >> Sent: Tuesday, November 19, 2013 5:26 AM
> >> To: Technical Tools Mail List
> >> Subject: Re: [Techtoolslist] Can anyone identify this chip?
> >>
> >> Hmmm... I can see I attached a pic, but it didn't get through. Sorry
> >> about that. I have posted the pic here:
> >>
> >> http://www.tollianweb.com/uc/vti.jpg
> >>
> >> It's IC 1N from an Exidy 440 PCB (Whodunit in this case). I'd really
> >> like to identify the manufacturer. I looked at several IC logo web
> >> sites and nothing comes up. It's in a bank of 2764's and supposedly
> >> supposed to be able to be read as a 2764, but my EETools Top Max is
> unable to read it.
> >> Really a mystery to me why I can't find this symbol at all (and why
> >> if it is equivalant to a 2764 my reader can't read it). It's not a
> >> bad chip as the game boots up and passes all self tests without any
> >> complaining.
> >>
> >> If anyone might be able to identify what IC is on 6K on the same
> >> boardset type, that would be appreciated too. On my board, it's a
> >> National 74S28(x) where "x" is either a 7 or an 8, but it's overlayed
> >> with an Exidy part number stamp. National 74S287 crosses to an MMI
> >> 6301 (Signetics 82S129) and a 74S288 crosses to a MMI 6331 (Signetics
> >> 82S123).
> >>
> >> Trying to dump a Whodunit ROM version that's not in MAME. Thanks,
> >>
> >> Joe
> >>
>
> --
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Received on Thu Nov 21 10:34:51 2013