Nios II Classic Processor Reference Guide

ID 683620
Date 10/28/2016
Public
Document Table of Contents

8.5.26. cmpgeui

Instruction compare greater than or equal unsigned immediate
Operation

if ((unsigned) rA >= (unsigned) (0x0000 : IMM16))

then rB ←  1

else rB ←  0

Assembler Syntax

cmpgeui rB, rA, IMM16

Example

cmpgeui r6, r7, 100

Description

Zero-extends the 16-bit immediate value IMM16 to 32 bits and compares it to the value of rA. If rA >= (0x0000 : IMM16), then cmpgeui stores 1 to rB; otherwise stores 0 to rB.

Usage

cmpgeui performs the unsigned >= operation of the C programming language.

Exceptions

None

Instruction Type

I

Instruction Fields

A = Register index of operand rA

B = Register index of operand rB

IMM16 = 16-bit unsigned immediate value

Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
A B IMM16
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IMM16 0x28