[oopic] Extra memory (Future plans for robot to map room details)

Hi,
On of the things I plan to do in the future is to try and get a
robot to try and keep a map of a room in memory on a kind of grid
system, and then do some kind of path finding to get from point A to
point B. But to do this I will need to have more then 400 bytes of
memory. Could anyone recommend some kind of extended memory module I
could use with the ooPIC? (I'm using the OOBoard)

I am hoping to discover some kind of serial device where you pass a
memory location and either set it to a byte or retrieve a byte from it.

Does anyone have any idea if this kind of thing exists?

Cheers,

Jas

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