APPENDIX A MIPS III INSTRUCTION SET DETAILS
528 Preliminary Users Manual S15543EJ1V0UM
MFHI Move From HI MFHI
0
0 0 0 0 0 0 0 0 0 0
SPECIAL
0 0 0 0 0 0
31 26 25 11 1016 15 0
610 56
rd 0
0 0 0 0 0
MFHI
0 1 0 0 0 0
5
65
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:
32, 64 T: GPR [rd] HI
Exceptions:
None