PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 319

• Manufacturer Part Number: PIC18F258
• Description: High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
• Manufacturer: MICROCHIP [Microchip Technology]

TSTFSZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
If skip:
If skip and followed by 2-word instruction:
2002 Microchip Technology Inc.
Before Instruction
After Instruction
operation
operation
operation
Decode
No
No
No
PC
If CNT
PC
If CNT
PC
Q1
Q1
Q1
register ’f’
operation
operation
operation
Test f, skip if 0
[ label ] TSTFSZ f [,a]
0
a
skip if f = 0
None
If ’f’ = 0, the next instruction,
fetched during the current instruc-
tion execution is discarded and a
NOP is executed, making this a
two-cycle instruction. If ’a’ is 0, the
Access Bank will be selected, over-
riding the BSR value. If ’a’ is 1,
then the bank will be selected as
per the BSR value (default).
1
1(2)
Note: 3 cycles if skip and followed
HERE
NZERO
ZERO
Read
0110
No
No
No
Q2
Q2
Q2
=
=
=
=
f
[0,1]
255
by a 2-word instruction.
Address (HERE)
0x00,
Address (ZERO)
0x00,
Address (NZERO)
:
TSTFSZ
011a
:
operation
operation
operation
Process
Data
No
No
No
Q3
Q3
Q3
CNT
ffff
operation
operation
operation
operation
No
No
No
No
Q4
Q4
Q4
ffff
XORLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
Decode
W
W
Q1
=
=
literal ’k’
Exclusive OR literal with W
[ label ] XORLW k
0
(W) .XOR. k
N, Z
The contents of W are XORed
with the 8-bit literal 'k'. The result
is placed in W.
1
1
XORLW
Read
Q2
0000
0xB5
0x1A
k
PIC18FXX8
255
0xAF
1010
Process
Data
Q3
DS41159B-page 317
W
kkkk
Write to W
Q4
kkkk