Motorola MC68VZ328 - Manual (Page 296)

16-4 MC68VZ328 User’s Manual
Programming Model
16.2 Programming Model
This section contains information about the ICE registers and programming information about their
settings.
16.2.1 In-Circuit Emulation Module Address Compare and
Mask Registers
The in-circuit emulation module address compare register (ICEMACR) is used to store the address of the
breakpoint, and the in-circuit emulation module address mask register (ICEMAMR) is used to mask the
corresponding address bit in the ICEMACR. The in-circuit emulation module’s address comparator will
compare the address bus value together with the control bus value to generate the EMUBRK signal. A
range can be set by using the address mask bits to break in a range of memory so that the external address
comparator can take action if extra hardware breakpoints are needed. The register bit assignments are
shown in the following register displays, and the settings of the bit assignments for both registers are
described in Table 16-1 on page 16-5.