NEC uPD98502 User Manual page 528

MFHI
31 26 25
SPECIAL
0 0 0 0 0 0
6
Format:
MFHI rd
Description:
The contents of special register HI are loaded into general register rd .
To ensure proper operation in the event of interruptions, the two instructions which follow a MFHI instruction may
not be any of the instructions which modify the HI register: MULT, MULTU, DIV, DIVU, MTHI, DMULT, DMULTU,
DDIV, DDIVU.
Operation:
GPR [rd] ← HI
32, 64 T:
Exceptions:
None
528
APPENDIX A MIPS III INSTRUCTION SET DETAILS
Move From HI
16 15
0
0 0 0 0 0 0 0 0 0 0
10
Preliminary User's Manual S15543EJ1V0UM
11 10 6 5
0
rd
0 0 0 0 0
5 5
MFHI
0
MFHI
0 1 0 0 0 0
6