IPR-NIOS Altera, IPR-NIOS Datasheet - Page 267

• Manufacturer Part Number: IPR-NIOS
• Description: IP NIOS II MEGACORE RENEW
• Manufacturer: Altera
• Type: MegaCorer

Specifications of IPR-NIOS

• License: Renewal License
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Chapter 8: Instruction Set Reference
Instruction Set Reference
rdctl
December 2010 Altera Corporation
Operation:
Assembler Syntax:
Example:
Description:
Exceptions:
Instruction Type:
Instruction Fields:
31
30
29
0
28
27
26
25
24
0
rC ← ctlN
rdctl rC, ctlN
rdctl r3, ctl31
Reads the value contained in control register ctlN and writes it to register rC.
Supervisor-only instruction
R
C = Register index of operand rC
N = Control register index of operand ctlN
23
22
21
20
19
C
18
17
16
15
14
0x26
13
12
11
10
9
read from control register
N
8
Nios II Processor Reference Handbook
7
6
5
4
0x3a
3
2
1
8–81
0