IPR-NIOS Altera, IPR-NIOS Datasheet - Page 275

• 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
sra
December 2010 Altera Corporation
Operation:
Assembler Syntax:
Example:
Description:
Usage:
Exceptions:
Instruction Type:
Instruction Fields:
31
30
29
A
28
27
26
25
24
B
rC ← (signed) rA >> ((unsigned) rB
sra rC, rA, rB
sra r6, r7, r8
Shifts rA right by the number of bits specified in rB
the result in rC. Bits 31–5 are ignored.
sra performs the signed >> operation of the C programming language.
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
17
16
15
4..0
14
0x3b
)
13
12
11
4..0
(duplicating the sign bit), and then stores
10
9
0
8
Nios II Processor Reference Handbook
shift right arithmetic
7
6
5
4
0x3a
3
2
1
8–89
0