NEC Network Controller uPD98502 - Manual (Page 531)

APPENDIX A MIPS III INSTRUCTION SET DETAILS
Preliminary User’s Manual S15543EJ1V0UM 531
MTHI
Move To HI
rs
SPECIAL
0 0 0 0 0 0
MTHI
0 1 0 0 0 1
0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
31 26 25 21 20 6 5 0
6 5 6 15
MTHI
Format:
MTHI rs
Description:
The contents of general register rs are loaded into special register HI.
If a MTHI operation is executed following a MULT, MULTU, DIV, or DIVU instruction, but before any MFLO, MFHI,
MTLO, or MTHI instructions, the contents of special register HI are undefined.
Operation:
32, 64 T-2: HI ← undefined
T-1: HI ← undefined
T: HI ← GPR [rs]
Exceptions:
None