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PIC18F25K20T-ISO Datasheet, PDF (349/456 Pages) Microchip Technology – 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology | |||
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PIC18F2XK20/4XK20
RRNCF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Rotate Right f (No Carry)
RRNCF f {,d {,a}}
0 ï£ f ï£ 255
d ï [0,1]
a ï [0,1]
(f<n>) ï® dest<n â 1>,
(f<0>) ï® 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 register âfâ (default).
If âaâ is â0â, the Access Bank will be
selected (default), overriding the BSR
value. If âaâ is â1â, then the bank will be
selected as per the BSR value.
If âaâ is â0â and the extended instruction
set is enabled, this instruction operates
in Indexed Literal Offset Addressing
mode whenever f ï£ï 95 (5Fh). See
Section 24.2.3 âByte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Modeâ for details.
register f
Words:
Cycles:
Q Cycle Activity:
Q1
Decode
1
1
Q2
Read
register âfâ
Q3
Process
Data
Q4
Write to
destination
Example 1:
RRNCF REG, 1, 0
Before Instruction
REG =
After Instruction
REG =
1101 0111
1110 1011
Example 2:
RRNCF REG, 0, 0
Before Instruction
W
=
REG =
After Instruction
W
=
REG =
?
1101 0111
1110 1011
1101 0111
SETF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Q1
Decode
Set f
SETF f {,a}
0 ï£ f ï£ 255
a ïï [0,1]
FFh ï® f
None
0110 100a ffff ffff
The contents of the specified register
are set to FFh.
If âaâ is â0â, the Access Bank is selected.
If âaâ is â1â, the BSR is used to select the
GPR bank.
If âaâ is â0â and the extended instruction
set is enabled, this instruction operates
in Indexed Literal Offset Addressing
mode whenever f ï£ï 95 (5Fh). See
Section 24.2.3 âByte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Modeâ for details.
1
1
Q2
Read
register âfâ
Q3
Process
Data
Q4
Write
register âfâ
Example:
SETF
REG, 1
Before Instruction
REG
= 5Ah
After Instruction
REG
= FFh
ï£ 2010 Microchip Technology Inc.
DS41303G-page 349
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