PIC17C752 MICROCHIP [Microchip Technology], PIC17C752 Datasheet - Page 199

• Manufacturer Part Number: PIC17C752
• Description: High-Performance 8-Bit CMOS EPROM Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

INCF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example:
1997 Microchip Technology Inc.
Before Instruction
After Instruction
Decode
CNT
Z
C
CNT
Z
C
Q1
=
=
=
=
=
=
register 'f'
Increment f
[ label ]
0
d
(f) + 1
OV, C, DC, Z
The contents of register 'f' are incre-
mented. If 'd' is 0 the result is placed in
WREG. If 'd' is 1 the result is placed
back in register 'f'.
1
1
INCF
Read
0001
Q2
0xFF
0
?
0x00
1
1
f
[0,1]
255
(dest)
INCF f,d
010d
CNT, 1
Process
Data
Q3
ffff
destination
Write to
Q4
ffff
INCFSZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
If skip:
Example:
Before Instruction
After Instruction
operation
Decode
PC
CNT
If CNT
If CNT
Q1
Q1
No
PC =
PC =
=
=
=
register 'f'
operation
Increment f, skip if 0
[ label ]
0
d
(f) + 1
skip if result = 0
None
The contents of register 'f' are incre-
mented. If 'd' is 0 the result is placed in
WREG. 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,
and an NOP is executed instead mak-
ing it a two-cycle instruction.
1
1(2)
HERE
NZERO
ZERO
Read
0001
Q2
Q2
No
Address (HERE)
CNT + 1
0;
Address(ZERO)
0;
Address(NZERO)
f
[0,1]
255
(dest)
INCFSZ
:
:
INCFSZ f,d
111d
operation
Process
Data
Q3
Q3
No
DS30264A-page 199
ffff
CNT, 1
destination
operation
Write to
Q4
Q4
No
ffff