PIC18F6620 Microchip, PIC18F6620 Datasheet - Page 301

• Manufacturer Part Number: PIC18F6620
• Description: Microcontroller
• Manufacturer: Microchip

TSTFSZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
 2004 Microchip Technology Inc.
Q Cycle Activity:
If skip:
If skip and followed by 2-word instruction:
Before Instruction
After Instruction
operation
operation
operation
Decode
PC
If CNT
PC
If CNT
PC
No
No
No
Q1
Q1
Q1
PIC18F6520/8520/6620/8620/6720/8720
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
instruction execution is discarded
and a NOP is executed, making this
a two-cycle instruction. If ‘a’ is ‘0’,
the Access Bank will be selected,
overriding 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, 1
ffff
operation
operation
operation
operation
No
No
No
No
Q4
Q4
Q4
ffff
XORLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example:
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 XOR’ed
with the 8-bit literal ‘k’. The result
is placed in W.
1
1
XORLW 0xAF
Read
Q2
0000
0xB5
0x1A
k
255
1010
Process
Data
Q3
DS39609B-page 299
W
kkkk
Write to W
Q4
kkkk