On Tue, Oct 20, 2009 at 01:30:01AM -0600, Anathae E. Townsend wrote: > Off topic, I know, but I'm hoping some USB programming smart readers > might know the answer to my question. > > Are there available usb interface chips that an OEM can program the > PID, VID, and Serial Number without having to specify it in the chip > Mask?
Yes there are. The Zaurus for instance has an USB device controller. http://www.openbsd.org/cgi-bin/man.cgi?query=usbf&sektion=4 > If this is possible, USB devices cannot be guaranteed to be unique > based on PID, VID and Serial number. No they cannot. OpenBSD is using: #define CDCEF_VENDOR_ID 0x0001 #define CDCEF_PRODUCT_ID 0x0001 #define CDCEF_DEVICE_CODE 0x0100 for cdcef(4). http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/usb/if_cdcef.c?annotate=1.24 HTH, Marco
