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On 2/6/2013 1:27 AM, Gene Heskett wrote:
> On Wednesday 06 February 2013 02:26:59 Gregory Perry did opine: 
> Message additions Copyright Wednesday 06 February 2013 by Gene
> Heskett
> 
>> There are two (2) 200MHz RISC cores that constitute the PRUSS
>> subsystem on the BeagleBone.  Each can address eight (8) pins on
>> the expansion headers, for a total of 16 pins.
> 
> Insufficient.  Nice thought while it lasted though.

Those are just the PRU I/O pins, which can be used for high-speed
signals (ie: step/dir).  The BeagleBone has 44 I/O on P8, and another
32 on P9 (those numbers include the PRU I/O pins).  And 7 of those I/O
can be analog inputs.

There are a *LOT* of I/O on the BeagleBone vs. a parallel port.

- -- 
Charles Steinkuehler
char...@steinkuehler.net
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