Sltu, Set on less than unsigned – NEC Network Controller uPD98502 User Manual
Page 552
APPENDIX A MIPS III INSTRUCTION SET DETAILS
552
Preliminary User’s Manual S15543EJ1V0UM
SLTU
Set On Less Than Unsigned
SLTU
rs
SPECIAL
0 0 0 0 0 0
rt
rd
0
0 0 0 0 0
SLTU
1 0 1 0 1 1
31
26 25
21 20
16 15
11 10
6 5
0
6
5
5
5
5
6
Format:
SLTU rd, rs, rt
Description:
The contents of general register
rt are subtracted from the contents of general register rs. Considering both
quantities as unsigned integers, if the contents of general register
rs are less than the contents of general register
rt, the result is set to 1; otherwise the result is set to 0.
No integer overflow exception occurs under any circumstances. The comparison is valid even if the subtraction
used during the comparison overflows.
Operation:
32
T:
if (0 || GPR [rs]) < 0 || GPR [rt] then
GPR [rd]
← 0
31
|| 1
else
GPR [rd]
← 0
32
endif
64
T:
if (0 || GPR [rs]) < 0 || GPR [rt] then
GPR [rd]
← 0
63
|| 1
else
GPR [rd]
← 0
64
endif
Exceptions:
None