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PIC16(L)F1508/9
DS40001609E-page 300
2011-2015 Microchip Technology Inc.
CALL
Call Subroutine
Syntax:
[
label
] CALL k
Operands:
0
k
2047
Operation:
(PC)+ 1
TOS,
k
PC<10:0>,
(PCLATH<6:3>)
PC<14:11>
Status Affected:
None
Description:
Call Subroutine. First, return address
(PC + 1) is pushed onto the stack.
The 11-bit immediate address is
loaded into PC bits <10:0>. The upper
bits of the PC are loaded from
PCLATH.
CALL
is a 2-cycle instruc-
tion.
CALLW
Subroutine Call With W
Syntax:
[
label
] CALLW
Operands:
None
Operation:
(PC) +1
TOS,
(W)
PC<7:0>,
(PCLATH<6:0>)
PC<14:8>
Status Affected:
None
Description:
Subroutine call with W. First, the
return address (PC + 1) is pushed
onto the return stack. Then, the con-
tents of W is loaded into PC<7:0>,
and the contents of PCLATH into
PC<14:8>.
CALLW
is a 2-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 Watch-
dog 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 com-
plemented. 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’.
Содержание PIC12F1501
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