PIC18F2220/2320/4220/4320
RRNCF
Rotate Right f (no carry)
SETF
Set f
Syntax:
[ label ] RRNCF f [,d [,a]]
Syntax:
[ label ] SETF f [,a]
Operands:
0 ≤ f ≤ 255
d ∈ [0,1]
a ∈ [0,1]
Operands:
0 ≤ f ≤ 255
a ∈ [0,1]
Operation:
FFh → f
Operation:
(f<n>) → dest<n-1>,
(f<0>) → dest<7>
Status Affected:
Encoding:
None
0110
100a
ffff
ffff
Status Affected:
Encoding:
N, Z
Description:
The contents of the specified regis-
ter are set to FFh. If ‘a’ is ‘0’, the
Access Bank will be selected, over-
riding the BSR value. If ‘a’ is ‘1’,
then the bank will be selected as
per the BSR value (default).
0100
00da
ffff
ffff
Description:
The contents of register ‘f’ are
rotated one bit to the right. If ‘d’ is
‘0’, the result is placed in W. If ‘d’ is
‘1’, the result is placed back in reg-
ister ‘f’ (default). If ‘a’ is ‘0’, the
Access Bank will be selected, over-
riding the BSR value. If ‘a’ is ‘1’,
then the bank will be selected as
per the BSR value (default).
Words:
Cycles:
1
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
register f
Decode
Read
register ‘f’
Process
Data
Write
register ‘f’
Words:
Cycles:
1
1
SETF
REG
Example:
Before Instruction
Q Cycle Activity:
Q1
REG
=
=
0x5A
0xFF
Q2
Q3
Q4
After Instruction
REG
Decode
Read
register ‘f’
Process
Data
Write to
destination
RRNCF
REG, 1, 0
Example 1:
Before Instruction
REG
=
1101 0111
1110 1011
RRNCF REG, W
After Instruction
REG
=
Example 2:
Before Instruction
W
REG
=
=
?
1101 0111
After Instruction
W
REG
=
=
1110 1011
1101 0111
2003 Microchip Technology Inc.
DS39599C-page 289
MICROCHIP [ MICROCHIP ]
