PIC16F818/819
COMF
Complement f
GOTO
Unconditional Branch
[ label ] GOTO k
0 ≤ k ≤ 2047
Syntax:
Operands:
[ label ] COMF f,d
Syntax:
0 ≤ f ≤ 127
d ∈ [0,1]
Operands:
Operation:
k → PC<10:0>
PCLATH<4:3> → PC<12:11>
Operation:
(f) → (destination)
Status Affected:
Description:
Z
Status Affected: None
The contents of register ‘f’ are
complemented. If ‘d’ = 0, the
result is stored in W. If ‘d’ = 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.
INCF
Increment f
DECF
Decrement f
Syntax:
Operands:
[ label ] INCF f,d
Syntax:
Operands:
[ label ] DECF f,d
0 ≤ f ≤ 127
d ∈ [0,1]
0 ≤ f ≤ 127
d ∈ [0,1]
Operation:
(f) + 1 → (destination)
Operation:
(f) – 1 → (destination)
Status Affected:
Description:
Z
Status Affected:
Description:
Z
The contents of register ‘f’ are
incremented. If ‘d’ = 0, the result
is placed in the W register. If
‘d’ = 1, the result is placed back in
register ‘f’.
Decrement register ‘f’. If ‘d’ = 0,
the result is stored in the W
register. If ‘d’ = 1, the result is
stored back in register ‘f’.
DECFSZ
Syntax:
Decrement f, Skip if 0
INCFSZ
Syntax:
Increment f, Skip if 0
[ label ] DECFSZ f,d
[ label ] INCFSZ f,d
Operands:
0 ≤ f ≤ 127
d ∈ [0,1]
Operands:
0 ≤ f ≤ 127
d ∈ [0,1]
Operation:
(f) – 1 → (destination);
skip if result = 0
Operation:
(f) + 1 → (destination),
skip if result = 0
Status Affected: None
Status Affected: None
Description: The contents of register ‘f’ are
Description: The contents of register ‘f’ are
decremented. If ‘d’ = 0, the result
is placed in the W register. If
‘d’ = 1, the result is placed back in
register ‘f’.
incremented. If ‘d’ = 0, the result is
placed in the W register. If ‘d’ = 1,
the result is placed back in
register ‘f’.
If the result is ‘1’, the next
instruction is executed. If the
result is ‘0’, then a NOPis
executed instead, making it a
2 TCY instruction.
If the result is ‘1’, the next
instruction is executed. If the
result is ‘0’, a NOPis executed
instead, making it a 2 TCY
instruction.
2004 Microchip Technology Inc.
DS39598E-page 107
MICROCHIP [ MICROCHIP ]
