Yes, I found it now, thanks.  I didn't have the right keywords to search on.
This is more than I hoped for - complete source code for the host and PIC
end of an 18f8720.  It's for a serial port but if I'm not mistaken it should
be easy to modify it to work with the USB FIFO on the DLP Design board.

- Chris Graham

>
> Microchip have an app note for a 16F87x/18F???? bootloader, along with a
zip
> of the source code that they list. IIRC it also includes code to run under
> windows to handle the other end. Probably as good a place to start as any.
> Look for AN851.
>

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