Datasheet

PIC16C55X
DS40143E-page 60 Preliminary  1996-2013 Microchip Technology Inc.
INCFSZ Increment f, Skip if 0
Syntax: [ label ] INCFSZ f,d
Operands: 0  f  127
d  [0,1]
Operation: (f) + 1  (dest), skip if result = 0
Status Affected: None
Encoding:
00 1111 dfff ffff
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 register 'f'.
If the result is 0, the next instruction,
which is already fetched, is discarded.
A NOP is executed instead making it a
two-cycle instruction.
Words: 1
Cycles: 1(2)
Example
HERE INCFSZ CNT, 1
GOTO LOOP
CONTINUE •
•
•
Before Instruction
PC = address HERE
After Instruction
CNT = CNT + 1
if CNT = 0,
PC = address CONTINUE
if CNT  0,
PC = address HERE +1
IORLW Inclusive OR Literal with W
Syntax: [ label ] IORLW k
Operands: 0  k  255
Operation: (W) .OR. k  (W)
Status Affected: Z
Encoding:
11 1000 kkkk kkkk
Description:
The contents of the W register is
OR’ed with the eight bit literal 'k'. The
result is placed in the W register.
Words: 1
Cycles: 1
Example
IORLW 0x35
Before Instruction
W = 0x9A
After Instruction
W=0xBF
Z=1
IORWF Inclusive OR W with f
Syntax: [ label ] IORWF f,d
Operands: 0  f  127
d  [0,1]
Operation: (W) .OR. (f)  (dest)
Status Affected: Z
Encoding:
00 0100 dfff ffff
Description:
Inclusive OR the W register with
register 'f'. If 'd' is 0 the result is placed
in the W register. If 'd' is 1 the result is
placed back in register 'f'.
Words: 1
Cycles: 1
Example
IORWF RESULT, 0
Before Instruction
RESULT = 0x13
W=0x91
After Instruction
RESULT = 0x13
W=0x93
Z=1
MOVLW Move Literal to W
Syntax: [ label ] MOVLW k
Operands: 0  k  255
Operation: k  (W)
Status Affected: None
Encoding:
11 00xx kkkk kkkk
Description:
The eight bit literal 'k' is loaded into W
register. The don’t cares will assemble
as 0’s.
Words: 1
Cycles: 1
Example
MOVLW 0x5A
After Instruction
W = 0x5A