PIC18C242 MICROCHIP [Microchip Technology], PIC18C242 Datasheet - Page 233

• Manufacturer Part Number: PIC18C242
• Description: High-Performance Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

TSTFSZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
If skip:
If skip and followed by 2-word instruction:
Example:
7/99 Microchip Technology Inc.
Before Instruction
After Instruction
operation
operation
operation
Decode
No
No
No
PC = Address(HERE)
If CNT
If CNT
Q1
Q1
Q1
PC
PC
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
by a 2-word instruction
HERE
NZERO
ZERO
Read
0110
No
No
No
Q2
Q2
Q2
=
=
=
f
[0,1]
255
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
Preliminary
XORLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example:
Before Instruction
After Instruction
Q1
Decode
WREG
WREG
Q2
=
=
literal ’k’
Exclusive OR literal with WREG
[ label ] XORLW k
0
(WREG) .XOR. k
N,Z
The contents of WREG are
XOR’ed with the 8-bit literal 'k'.
The result is placed in WREG.
1
1
XORLW 0xAF
Read
0000
0xB5
0x1A
k
PIC18CXX2
255
Q3
1010
Process
Data
DS39026B-page 233
kkkk
WREG
Q4
Write to
WREG
kkkk