PIC16F62X
IORWF
Inclusive OR W with f
MOVF
Move f
Syntax:
[ label ] IORWF f,d
Syntax:
Operands:
[ label ] MOVF f,d
Operands:
0 ≤ f ≤ 127
0 ≤ f ≤ 127
d
[0,1]
d
[0,1]
Operation:
(W) .OR. (f) → (dest)
Operation:
(f) → (dest)
Status Affected:
Encoding:
Z
Status Affected:
Encoding:
Z
00
0100
dfff
ffff
00
1000
dfff
ffff
Inclusive OR the W register with
register ’f’. If ’d’ is 0 the result is placed
in the W register. If ’d’ is 1 the result is
placed back in register ’f’.
The contents of register f is moved to
a destination dependent 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 register since status flag Z is
affected.
Description:
Description:
Words:
Cycles:
Example
1
1
IORWF
RESULT, 0
Words:
Cycles:
Example
1
1
Before Instruction
RESULT =
0x13
0x91
MOVF
FSR, 0
W
=
After Instruction
After Instruction
RESULT =
W
Z
0x13
0x93
1
W = value in FSR register
=
=
Z
= 1
MOVLW
Move Literal to W
[ label ] MOVLW k
0 ≤ k ≤ 255
MOVWF
Move W to f
[ label ] MOVWF
0 ≤ f ≤ 127
(W) → (f)
Syntax:
Syntax:
f
Operands:
Operation:
Status Affected:
Encoding:
Description:
Operands:
Operation:
Status Affected:
Encoding:
Description:
k → (W)
None
None
11
00xx
kkkk
kkkk
00
0000
1fff
ffff
The eight bit literal ’k’ is loaded into W
register. The don’t cares will assemble
as 0’s.
Move data from W register to register
'f'.
Words:
Cycles:
Example
1
1
Words:
Cycles:
Example
1
1
MOVWF
OPTION
MOVLW
0x5A
Before Instruction
After Instruction
OPTION =
0xFF
0x4F
W
=
0x5A
W
=
After Instruction
OPTION =
0x4F
0x4F
W
=
DS40300B-page 120
Preliminary
1999 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
