Hardware and Software Development Tools for the HCS12 - The HCS12/9S12: An Introduction to Software and Hardware Interfacing - page 137

Figure 3.39 ■ CodeWarrior debugger debugging commands
the assembly window. To show the location of a line in the source window, take the following
actions:
1. Place the mouse cursor at the instruction in the source window.
2. Press the right mouse button to bring up the debugger command menu.
3. Select the Show Location command.
3.9 BDM Serial Interface
The BDM module communicates with external devices via the BKGD pin. During reset,
this pin is a mode-select input, which selects between the normal and special modes of opera-
tion. After reset, this pin becomes the dedicated serial interface pin for the BDM.
The timing of the BDM serial interface is controlled by the target clock. The target clock is
programmable and can be either the bus clock or the oscillator clock. The BDM serial interface