
PIC18FXX39
DS30485A-page 234
Preliminary
2002 Microchip Technology Inc.
IORLW
Inclusive OR literal with W
Syntax:
[ label ] IORLW k
Operands:
0
≤ k ≤ 255
Operation:
(W) .OR. k
→ W
Status Affected:
N, Z
Encoding:
0000
1001
kkkk
Description:
The contents of W are OR’ed with
the eight-bit literal 'k'. The result is
placed in W.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
literal 'k'
Process
Data
Write to W
Example:
IORLW
0x35
Before Instruction
W
=
0x9A
After Instruction
W=
0xBF
IORWF
Inclusive OR W with f
Syntax:
[ label ] IORWF
f [,d [,a]
Operands:
0
≤ f ≤ 255
d
∈ [0,1]
a
∈ [0,1]
Operation:
(W) .OR. (f)
→ dest
Status Affected:
N, Z
Encoding:
0001
00da
ffff
Description:
Inclusive OR W with register 'f'. If 'd'
is 0, the result is placed in W. If 'd'
is 1, the result is placed back in
register 'f' (default). If ‘a’ is 0, the
Access Bank will be selected, over-
riding the BSR value. If ‘a’ = 1, then
the bank will be selected as per the
BSR value (default).
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register 'f'
Process
Data
Write to
destination
Example:
IORWF
RESULT, 0, 1
Before Instruction
RESULT =
0x13
W
=
0x91
After Instruction
RESULT =
0x13
W
=
0x93