Altera Nios II User Manual page 223

Chapter 8: Instruction Set Reference
Instruction Set Reference
cmpltu
Operation:
Assembler Syntax:
Example:
Description:
Usage:
Exceptions:
Instruction Type:
Instruction Fields:
31 30 29 28 27 26 25
A
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if ((unsigned) rA < (unsigned) rB)
then rC ← 1
else rC ← 0
cmpltu rC, rA, rB
cmpltu r6, r7, r8
If rA < rB, then stores 1 to rC; otherwise stores 0 to rC.
cmpltu performs the unsigned < operation of the C programming language.
None
R
A = Register index of operand rA
B = Register index of operand rB
C = Register index of operand rC
24 23 22 21 20 19 18 17
B C
compare less than unsigned
16 15 14 13 12 11 10 9
0x30
8 7 6 5 4 3 2 1
0 0x3a
Nios II Processor Reference Handbook
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