more I/O ports

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Hi,
I'm writing a program at the moment for the AT90s2313, but the processor doesn't have enough I/O ports to support my program.
Does anyone know how I can get more I/O ports?
Maybe with a slave processor?

And I have another question:
Does anyone know how to use the Int0 and Int1 ports as normal input or output ports?

Thanks

Michiel

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External latches?

A.

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use a 74HC164 takes 2 i/o's gives you 8 outputs, combined with a 74HC165 takes only 3 i/o's and you have 8 extra inputs.

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Hi,

There is a design note on this exact topic actually, check the "Academy" section of this site, I can't remember the exact link...

-Colin