A simple solution is to use USB Bit Whacker,
http://www.sparkfun.com/commerce/product_info.php?products_id=762
there is also a 32 bit version available. This one plus IO port
expander, may just do it, and you don;t even need to program PIC.

You can send command through COM port using simple command to read write ports.

-- Youda

On Sun, May 23, 2010 at 9:58 AM, Dario Greggio <adpm.to@inwind.it> wrote:
> Michael Watterson ha scritto:
>
>>> and no 18F part with USB and more than 44 pins... IIRC
>>> (may be wrong though, I never needed that)
>>>
>> 64 and 80 pin 18F67Jxx and 18F87Jxx do USB
>
>
> I see, thank you Michael :)
>
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>
> Ciao, Dario
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> Cyberdyne
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