NEC Network Controller uPD98502 - Manual (Page 464)

APPENDIX A MIPS III INSTRUCTION SET DETAILS
464 Preliminary User’s Manual S15543EJ1V0UM
BREAK
Breakpoint
BREAK
code
SPECIAL
0 0 0 0 0 0
BREAK
0 0 1 1 0 1
31 26 25 6 5 0
6 20 6
Format:
BREAK
Description:
A breakpoint trap occurs, immediately and unconditionally transferring control to the exception handler.
The code field is available for use as software parameters, but is retrieved by the exception handler only by loading
the contents of the memory word containing the instruction.
Operation:
32, 64 T: BreakpointException
Exceptions:
Breakpoint exception