Excalibur electronic A-MNL-NIOSPROG-01.1 用户手册
Altera Corporation
65
32323232
32-Bit Instruction Set
2
3
2
-B
it In
st
st
ru
ctio
n
n
Se
t
t
LSR
Logical Shift Right
Operation:
RA
← (RA >> RB[4..0]), zero-fill from left
Assembler Syntax:
LSR %rA,%rB
Example:
LSR %L3,%g0 ; Shift %L3 right by %g0 bits
Description:
The value in RA is shifted-right by the number of bits indicated by RB [4..0] (bits
RB[31..5] are ignored). The result is zero-filled from the left.
Condition Codes:
Flags: Unaffected
Instruction Format:
RR
Instruction Fields:
A = Register index of RA operand
B = Register index of RB operand
B = Register index of RB operand
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
1
0
0
0
B
A
N
V
Z
C
−
−
−
−