Datasheet

PIC16C9XX
DS30444E - page 130  1997 Microchip Technology Inc.
MOVF Move f
Syntax: [
label ] MOVF f,d
Operands: 0 ≤ f ≤ 127
d ∈ [0,1]
Operation: (f) → (destination)
Status Affected: Z
Encoding:
00 1000 dfff ffff
Description:
The contents of register f is moved to a
destination dependant upon the status
of d. If d = 0, destination is W register. If
d = 1, the destination is file register f
itself. d = 1 is useful to test a file regis-
ter since status flag Z is affected.
Words: 1
Cycles: 1
Q Cycle Activity: Q1 Q2 Q3 Q4
Decode Read
register
'f'
Process
data
Write to
destination
Example
MOVF FSR,
0
After Instruction
W = value in FSR register
Z = 1
MOVLW Move Literal to W
Syntax: [
label ] MOVLW k
Operands: 0 ≤ k ≤ 255
Operation: k → (W)
Status Affected: None
Encoding:
11 00xx kkkk kkkk
Description: The eight bit literal 'k' is loaded into W
register. The don’t cares will assemble
as 0’s.
Words: 1
Cycles: 1
Q Cycle Activity: Q1 Q2 Q3 Q4
Decode Read
literal 'k'
Process
data
Write to
W
Example
MOVLW 0x5A
After Instruction
W = 0x5A
MOVWF Move W to f
Syntax: [
label ] MOVWF f
Operands: 0 ≤ f ≤ 127
Operation: (W) → (f)
Status Affected: None
Encoding:
00 0000 1fff ffff
Description: Move data from W register to register
'f'.
Words: 1
Cycles: 1
Q Cycle Activity: Q1 Q2 Q3 Q4
Decode Read
register
'f'
Process
data
Write
register 'f'
Example
MOVWF OPTION_REG
Before Instruction
OPTION = 0xFF
W = 0x4F
After Instruction
OPTION = 0x4F
W = 0x4F