
PIC16C71X
DS30272A-page 84
1997 Microchip Technology Inc.
XORLW
Exclusive OR Literal with W
Syntax:
[
label]
XORLW k
Operands:
0
≤ k ≤ 255
Operation:
(W) .XOR. k
→ (W)
Status Affected:
Z
Encoding:
11
1010
kkkk
Description:
The contents of the W register are
XOR’ed with the eight bit literal 'k'.
The result is placed in the W regis-
ter.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
literal 'k'
Process
data
Write to
W
Example:
XORLW
0xAF
Before Instruction
W
=
0xB5
After Instruction
W
=
0x1A
XORWF
Exclusive OR W with f
Syntax:
[
label]
XORWF
f,d
Operands:
0
≤ f ≤ 127
d
∈ [0,1]
Operation:
(W) .XOR. (f)
→ (dest)
Status Affected:
Z
Encoding:
00
0110
dfff
ffff
Description:
Exclusive OR the contents of the W
register with register 'f'. If 'd' is 0 the
result is stored in the W register. If 'd'
is 1 the result is stored back in register
'f'.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process
data
Write to
dest
Example
XORWF
REG
1
Before Instruction
REG
=
0xAF
W
=
0xB5
After Instruction
REG
=
0x1A
W
=
0xB5