Daddiu, Doubleword add immediate unsigned – NEC Network Controller uPD98502 User Manual
Page 471
APPENDIX A MIPS III INSTRUCTION SET DETAILS
Preliminary User’s Manual S15543EJ1V0UM
471
DADDIU
Doubleword Add Immediate Unsigned
DADDIU
rs
DADDIU
0 1 1 0 0 1
rt
immediate
31
26 25
21 20
16 15
0
6
5
5
16
Format:
DADDIU rt, rs, immediate
Description:
The 16-bit
immediate is sign-extended and added to the contents of general register rs to form the result. The
result is placed into general register
rt. No integer overflow exception occurs under any circumstances.
The only difference between this instruction and the DADDI instruction is that DADDIU never causes an overflow
exception.
Operation:
64
T:
GPR [rt]
← GPR [rs] + (immediate
15
)
48
|| immediate
15...0
Exceptions:
Reserved instruction exception (32-bit user mode/supervisor mode)