Nios® II Processor Reference Guide

ID 683836
Date 10/22/2020
Public
Document Table of Contents

8.5.94. wrctl

Instruction write to control register
Operation

ctlN ←  rA

Assembler Syntax

wrctl ctlN, rA

Example

wrctl ctl6, r3

Description

Writes the value contained in register rA to the control register ctlN.

Exceptions

Supervisor-only instruction

Instruction Type

R

Instruction Fields

A = Register index of operand rA

N = Control register index of operand ctlN

Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
A 0 0 0x2e
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0x2e N 0x3a

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