BDM, JTAG, and Nexus
Arnold Berger · 2001
Compared to the cost of a traditional ICE, a wiggler is an incredi ble bargain. For example, I purchased 10 wigglers for use with the M otorola M F5206e ColdFire processor for about $40 each (including an educational discount). The wiggler, from P& E Micro, connects through the parallel port of a PC and includes a basic debugger that runs on the PC and communicates with the BDM core in the proces sor. The wiggler is inexpensive because the complex portions of the functionality have been moved into the chip, where circuitry is cheap. The wiggler does little else other than implement the debug core’s tim ing and protocol interface to the CPU.