Nios® II Processor Reference Guide

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

3.4.2.14.4. The PERM Field

The PERM field specifies the allowed access permissions.
Table 33.  Instruction Region Permission Values
Value Supervisor Permissions User Permissions
0 None None
1 Execute None
2 Execute Execute
Table 34.  Data Region Permission Values
Value Supervisor Permissions User Permissions
0 None None
1 Read None
2 Read Read
4 Read/Write None
5 Read/Write Read
6 Read/Write Read/Write
Note: Unlisted table values are reserved and must not be used. If you use reserved values, the resulting behavior is undefined.

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