IPR-NIOS Altera, IPR-NIOS Datasheet - Page 270

• 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

8–84
rol
Nios II Processor Reference Handbook
Operation:
Assembler Syntax:
Example:
Description:
Exceptions:
Instruction Type:
Instruction Fields:
31
30
29
A
28
27
26
25
24
B
rC ← rA rotated left rB
rol rC, rA, rB
rol r6, r7, r8
Rotates rA left by the number of bits specified in rB
shift out of the register rotate into the least-significant bit positions. Bits 31–5 of rB are
ignored.
None
R
A = Register index of operand rA
B = Register index of operand rB
C = Register index of operand rC
23
22
21
20
19
C
18
4..0
17
bit positions
16
15
14
0x03
13
12
11
4..0
10
and stores the result in rC. The bits that
9
0
8
Chapter 8: Instruction Set Reference
December 2010 Altera Corporation
7
6
5
Instruction Set Reference
4
rotate left
0x3a
3
2
1
0