PIC16F872 Datasheet, PDF (115/160 Pages) Microchip Technology – 28-Pin, 8-Bit CMOS FLASH Microcontroller

COMF
Syntax:
Operands:
Operation:
Status Affected:
Description:
Complement f
[ label ] COMF f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) → (destination)
Z
The contents of register ’f’ are
complemented. If ’d’ is 0, the
result is stored in W. If ’d’ is 1, the
result is stored back in register ’f’.
DECF
Syntax:
Operands:
Operation:
Status Affected:
Description:
Decrement f
[label] DECF f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) - 1 → (destination)
Z
Decrement register ’f’. If ’d’ is 0,
the result is stored in the W regis-
ter. If ’d’ is 1, the result is stored
back in register ’f’.
DECFSZ
Syntax:
Operands:
Operation:
Status Affected:
Description:
Decrement f, Skip if 0
[ label ] DECFSZ f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) - 1 → (destination);
skip if result = 0
None
The contents of register ’f’ are
decremented. If ’d’ is 0, the result
is placed in the W register. If ’d’ is
1, the result is placed back in reg-
ister ’f’.
If the result is 1, the next instruc-
tion is executed. If the result is 0,
then a NOP is executed instead
making it a 2TCY instruction.
PIC16F872
GOTO
Syntax:
Operands:
Operation:
Status Affected:
Description:
Unconditional Branch
[ label ] GOTO k
0 ≤ k ≤ 2047
k → PC<10:0>
PCLATH<4:3> → PC<12:11>
None
GOTO is an unconditional branch.
The eleven bit immediate value is
loaded into PC bits <10:0>. The
upper bits of PC are loaded from
PCLATH<4:3>. GOTO is a two
cycle instruction.
INCF
Syntax:
Operands:
Operation:
Status Affected:
Description:
Increment f
[ label ] INCF f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) + 1 → (destination)
Z
The contents of register ’f’ are
incremented. If ’d’ is 0, the result
is placed in the W register. If ’d’ is
1, the result is placed back in reg-
ister ’f’.
INCFSZ
Syntax:
Operands:
Operation:
Status Affected:
Description:
Increment f, Skip if 0
[ label ] INCFSZ f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) + 1 → (destination),
skip if result = 0
None
The contents of register ’f’ are
incremented. If ’d’ is 0, the result is
placed in the W register. If ’d’ is 1,
the result is placed back in regis-
ter ’f’.
If the result is 1, the next instruc-
tion is executed. If the result is 0, a
NOP is executed instead making it
a 2TCY instruction.
© 1999 Microchip Technology Inc.
Preliminary
DS30221A-page 115