User`s manual

Finding Well Hidden Bugs
Motorola Tips about Special Projects 4-9
Figure 4-3. Dialogue Box to Set a Breakpoint in Memory
4.3.2 Setting Breakpoints on Registers
To set a breakpoint on a register, follow the steps in Section
4.3.1, "Setting Breakpoints on Memory," on page 4-7,
choosing Register (rather than Memory) each time. In other
words, you can set a breakpoint on a register either by clicking
on the register contents in a device-register window, or by
choosing Execute//Breakpoints//Set from the menu.