Datasheet

PIC16F870/871
DS30569C-page 106  2000-2013 Microchip Technology Inc.
CALL Call Subroutine
Syntax: [ label ] CALL k
Operands: 0  k  2047
Operation: (PC)+ 1 TOS,
k  PC<10:0>,
(PCLATH<4:3>)  PC<12:11>
Status Affected: None
Description: Call Subroutine. First, return
address (PC+1) is pushed onto
the stack. The eleven-bit
immediate address is loaded into
PC bits <10:0>. The upper bits of
the PC are loaded from PCLATH.
CALL is a two-cycle instruction.
CLRF Clear f
Syntax: [ label ] CLRF f
Operands: 0  f  127
Operation: 00h  (f)
1  Z
Status Affected: Z
Description: The contents of register 'f' are
cleared and the Z bit is set.
CLRW Clear W
Syntax: [ label ] CLRW
Operands: None
Operation: 00h  (W)
1  Z
Status Affected: Z
Description: W register is cleared. Zero bit (Z)
is set.
CLRWDT Clear Watchdog Timer
Syntax: [ label ] CLRWDT
Operands: None
Operation: 00h  WDT
0  WDT prescaler,
1  TO
1  PD
Status Affected: TO, PD
Description: CLRWDT instruction resets the
Watchdog Timer. It also resets
the prescaler of the WDT. Status
bits TO
and PD are set.
COMF Complement f
Syntax: [ label ] COMF f,d
Operands: 0  f  127
d  [0,1]
Operation: (f
)  (destination)
Status Affected: Z
Description: 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 Decrement f
Syntax: [ label ] DECF f,d
Operands: 0  f  127
d  [0,1]
Operation: (f) - 1  (destination)
Status Affected: Z
Description: Decrement register 'f'. If 'd' is 0,
the result is stored in the W
register. If 'd' is 1, the result is
stored back in register 'f'.