PIC16F870/871
COMF
Complement f
[ label ] COMF f,d
0 ≤ f ≤ 127
GOTO
Unconditional Branch
[ label ] GOTO k
0 ≤ k ≤ 2047
Syntax:
Operands:
Syntax:
Operands:
Operation:
d
[0,1]
k → PC<10:0>
Operation:
(f) → (destination)
PCLATH<4:3> → PC<12:11>
Status Affected:
Description:
Z
Status Affected: None
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’.
Description:
GOTOis 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>. GOTOis a two
cycle instruction.
DECF
Decrement f
[label] DECF f,d
0 ≤ f ≤ 127
INCF
Increment f
Syntax:
Operands:
Syntax:
Operands:
[ label ] INCF f,d
0 ≤ f ≤ 127
d
[0,1]
d
[0,1]
Operation:
(f) - 1 → (destination)
Operation:
(f) + 1 → (destination)
Status Affected:
Description:
Z
Status Affected:
Description:
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’.
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’.
DECFSZ
Syntax:
Decrement f, Skip if 0
[ label ] DECFSZ f,d
0 ≤ f ≤ 127
INCFSZ
Syntax:
Increment f, Skip if 0
[ label ] INCFSZ f,d
0 ≤ f ≤ 127
Operands:
d
[0,1]
Operands:
Operation:
(f) - 1 → (destination);
skip if result = 0
d
[0,1]
Operation:
(f) + 1 → (destination),
skip if result = 0
Status Affected: None
Description: The contents of register ’f’ are
Status Affected: None
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 NOPis executed instead
making it a 2TCY instruction.
Description: 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
NOPis executed instead making it
a 2TCY instruction.
1999 Microchip Technology Inc.
Preliminary
DS30569A-page 109
MICROCHIP [ MICROCHIP ]
