Robostix: Quadrature Encoder Counters

Dear Robostix gurus,

Does anyone know if the Atmega128 has up/down counters in it?
I'm thinking of attaching some quadrature encoder devices that outputs
up/down pulses (or clk/dir signals) to it, but that depends on whether
the device has internal up/down counters .

If not, then I can interface an quadrature encoder counter that has a
cpu interface.  Unfortunately this is a bigger device and would also
require the appropriate addr/data gating due to the multiplexed
addr/data bus.  Also I don't believe the Atmega has chipselects like
other microcontrollers so I would also have to decode the address bus.
All this is not drastically difficult, it is just that I am prototyping
with standard dip components (not SMD) on a very small piece of vero
board.  Just trying to save space and time :)

Also, are the 8 pads on the bottom of the board the 8 bit addr/data lines ??

Thanks for any info,
Cheers,
Brendan Simon.




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