Excalibur electronic A-MNL-NIOSPROG-01.1 用户手册
Altera Corporation
81
32323232
32-Bit Instruction Set
2
3
2
-B
it In
st
st
ru
ctio
n
n
Se
t
t
RRC
Rotate Right Through Carry
Operation:
C
← RA[0]
RA
← C : (RA >> 1)
Assembler Syntax:
RRC %rA
Example:
RRC %i4 ; rotate %i4 right one bit
Description:
Rotates the bits of RA right by one position through the carry flag.
If Preceded by PFX:
Unaffected
Condition Codes:
Flags:
C: Bit 0 of RA before rotating
Instruction Format:
Rw
Instruction Fields:
A = Register index of operand RA
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
1
1
1
1
1
0
0
1
1
0
A
N
V
Z
C
–
–
–
∆