APPENDIX A MIPS III INSTRUCTION SET DETAILS
536
Preliminary User’s Manual S15543EJ1V0UM
OR
Or
OR
rs
SPECIAL
000000
rt rd
0
00000
OR
1 0 0 1 0 1
31 26 25 21 20 16 15 11 10 6 5 0
655556
Format:
OR rd, rs, rt
Description:
The contents of general register
rs
are combined with the contents of general register
rt
in a bit-wise logical OR
operation. The result is placed into general register
rd
.
Operation:
32, 64 T:
GPR [rd] ← GPR [rs] or GPR [rt]
Exceptions:
None