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MICROPROCESSOR INSTRUCTION REFERENCE->BKPT

BKPT    Breakpoint

Compatibility: 68010, 68020, CPU32 only.

Run breakpoint acknowledge cycle.
If acknowledged, execute returned operation word otherwise TRAP as an illegal instruction.

Assembler Syntax:    BKPT #<data>

Unsized

For the MC68010, a breakpoint acknowledge bus cycle is run with function codes driven high and zeros on all address lines.

For the MC68020, MC68030, and CPU32, a breakpoint acknowledge bus cycle is executed with the immediate data (value 0-7) on bits 2-4 of the address bus and zeros on bits 0 and 1 of the address bus.


Condition Codes Not Affected