Specifications

8–48 Altera Corporation
Nios II Processor Reference Handbook October 2007
cmpnei
cmpnei
compare not equal immediate
Operation: if (rA != σ (IMM16))
then rB
←
1
else rB
←
0
Assembler Syntax:
cmpnei rB, rA, IMM16
Example:
cmpnei r6, r7, 100
Description: Sign-extends the 16-bit immediate value IMM16 to 32 bits and compares it to the value
of rA. If rA != σ (IMM16), then
cmpnei stores 1 to rB; otherwise stores 0 to rB.
Usage:
cmpnei performs the != operation of the C programming language.
Instruction Type: I
Instruction Fields: A = Register index of operand rA
B = Register index of operand rB
IMM16 = 16-bit signed immediate value
313029282726252423222120191817161514131211109876543210
A B IMM16 0x18