PIC17C752 MICROCHIP [Microchip Technology], PIC17C752 Datasheet - Page 200

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

INFSNZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
If skip:
Example:
DS30264A-page 200
Before Instruction
After Instruction
operation
Decode
REG
REG
If REG
If REG
Q1
Q1
No
PC =
PC =
=
=
=
=
register 'f'
operation
Increment f, skip if not 0
[ label ]
0
d
(f) + 1
skip if not 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 not 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
ZERO
NZERO
Read
0010
Q2
Q2
No
REG
REG + 1
1;
Address (ZERO)
0;
Address (NZERO)
f
[0,1]
255
INFSNZ f,d
(dest),
INFSNZ
010d
operation
Process
Data
Q3
Q3
No
REG, 1
ffff
destination
operation
Write to
Q4
Q4
No
ffff
IORLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example:
Before Instruction
After Instruction
Decode
WREG
WREG
Q1
=
=
Inclusive OR Literal with WREG
[ label ]
0
(WREG) .OR. (k)
Z
The contents of WREG are OR’ed with
the eight bit literal 'k'. The result is
placed in WREG.
1
1
IORLW
literal 'k'
Read
1011
Q2
0x9A
0xBF
k
1997 Microchip Technology Inc.
255
IORLW k
0011
0x35
Process
Data
Q3
kkkk
(WREG)
Write to
WREG
Q4
kkkk