yes, when i connect the board, my computer recognise the new device, but without driver for him.
in comment inside the code,is explained that needn't modifications or drivers for him.
my Xtal is 8Mhz, with a secont xtal 32.768Khz
in the code, has no explanation about the xtal frequency, or, i not found.
i'm using an board designed in my company, based in TS430PN80USB board (development board from texas).
Checking with oscilloscope, i can see the pulse from microcontroller when i connected in my PC