When you use the term stack with regard to the chip, I assume you are talking about the HCI portion of the stack. Apple has provided an implementation of the upper layers of the stack (L2CAP, RFCOMM, SDP, OBEX) and a driver for a USB implementation of the HCI layer. If the chip you use supports the USB HCI specification your module should just work with the software provided by Apple. If you choose to go the Serial route, you will need to provide an OS X driver which will interface between the Apple stack, and your serial hardware. Most Bluetooth chip providers have a USB version of their silicon. If the chip vendor supports the USB transport according the the spec (Part H:2 if you are looking at the 1.1 spec) our driver should work with it. -larson On Friday, May 17, 2002, at 07:41 AM, Erick van Rijk wrote: I'm a CE student and looking into developing my own prototype Bluetooth module. But currently I'm having a little trouble finding suitable Bluetooth chips for testing/developing. What advice could you give me for selecting a good chip (preferably with stack onchip)? Maybe a list of manufactures would be nice. _______________________________________________ bluetooth-dev mailing list | bluetooth-dev@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.