> Does anyone know anything about interfacing with USB connection?

Sure, I've build some prototypes for my company utilizing USB.

> I'm trying to build a PIC Programmer that also interfaces with the USB
> connection.  Is it possible to?

Definitely.  In fact it would be one of the easier projects.  The best
thing to do is to buy the 82930AX eval board.  I don't think the Cypress
part is in production yet. Plus the Intel web site has sample code for
enumeration (PnP) and different types of transfers.

You would want to use a "Bulk" pipe.  Bulk mode is for transferring large
blocks of non-time critical code with error checking.  It's actually the
easier mode to use.

> Does anyone have any information on how to
> write software that interfaces with USB?..

Yes, I've written three different USB drivers with some supporting apps
also.  Writing the drivers is the trickiest part right now since the MS
standards are still rough.  Note that in order to write the drivers, you
would need the windows NT DDK and the USB DDK available through MSDN. I
would also recommend that you do all of your coding towards Win98 (which is
in beta 3 right now), since it has the best support for USB (win95 osr2.1
also has support but it is really shakey). If you are still interested in
pursuing this, I can help you through the software when you get to that
point...



-=-=-=-=-=-=-=-=-=-=-=-=
  Dennis Merrill, BSEE
 Device Driver Engineer
 Embedded Systems Group
   Nicolet Instrument
  merrill@nicolet.com
-=-=-=-=-=-=-=-=-=-=-=-=