|
PIC18F2220 Datasheet, PDF (291/388 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology | |||
|
◁ |
PIC18F2220/2320/4220/4320
RRNCF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Rotate Right f (no carry)
[ label ] RRNCF f [,d [,a]]
0 ⤠f ⤠255
d â [0,1]
a â [0,1]
(f<n>) â dest<n-1>,
(f<0>) â dest<7>
N, Z
0100 00da ffff ffff
The contents of register âfâ are
rotated one bit to the right. If âdâ is
â0â, the result is placed in W. If âdâ is
â1â, the result is placed back in reg-
ister âfâ (default). If âaâ is â0â, the
Access Bank will be selected, over-
riding the BSR value. If âaâ is â1â,
then the bank will be selected as
per the BSR value (default).
register f
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Decode
Read
register âfâ
Q3
Process
Data
Q4
Write to
destination
Example 1:
RRNCF REG, 1, 0
Before Instruction
REG = 1101 0111
After Instruction
REG = 1110 1011
Example 2:
RRNCF REG, W
Before Instruction
W
REG
=?
= 1101 0111
After Instruction
W
REG
= 1110 1011
= 1101 0111
SETF
Set f
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
[ label ] SETF f [,a]
0 ⤠f ⤠255
a â [0,1]
FFh â f
None
0110 100a ffff ffff
The contents of the specified regis-
ter are set to FFh. If âaâ is â0â, the
Access Bank will be selected, over-
riding the BSR value. If âaâ is â1â,
then the bank will be selected as
per the BSR value (default).
1
1
Q Cycle Activity:
Q1
Q2
Decode
Read
register âfâ
Q3
Process
Data
Q4
Write
register âfâ
Example:
SETF
Before Instruction
REG
=
After Instruction
REG
=
REG
0x5A
0xFF
 2003 Microchip Technology Inc.
DS39599C-page 289
|
▷ |