Atari;s Night Driver (1976) - RAM type?

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What type of RAM chip (24-pin IC) is at location M2 on Atari's 1976
monochrome game Night Driver?

The schematics and manual are of no help.

Atari's part no is: 90-7002

Archived from groups: rec.games.video.arcade.collecting (More info?)

On 22 May 2005 13:21:22 -0700, "Curious George" <jedidroid@aol.com>
wrote:

>My board has a chip that has the Atari logo with the words 'innovative
>leisure' underneath. The numbers 90-7002, 185 underneath that and what
>looks like 7602A underneath that. I hope this helps.
>

Thanks - the 90-7002 is the Atari part number, not sure about the 185
but the 7602A is the year and month (1976, February).

Archived from groups: rec.games.video.arcade.collecting (More info?)

On Mon, 23 May 2005 22:46:50 GMT, "Alex Yeckley"
<ayeckley@elektronforge.com> wrote:

>> What type of RAM chip (24-pin IC) is at location M2 on Atari's 1976
>> monochrome game Night Driver?
>
>It's a 6810...

Cheers Alex - any ideas who sells these?