PIC18F87J11_12 Datasheet, PDF (375/466 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Flash Microcontrollers

PIC18F87J11 FAMILY
NEGF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Q1
Decode
Negate f
NEGF f {,a}
0  f  255
a  [0,1]
(f) + 1  f
N, OV, C, DC, Z
0110 110a ffff ffff
Location ‘f’ is negated using two’s
complement. The result is placed in the
data memory location ‘f’.
If ‘a’ is ‘0’, the Access Bank is selected.
If ‘a’ is ‘1’, the BSR is used to select the
GPR bank.
If ‘a’ is ‘0’ and the extended instruction
set is enabled, this instruction operates
in Indexed Literal Offset Addressing
mode whenever f 95 (5Fh). See
Section 26.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode” for details.
1
1
Q2
Read
register ‘f’
Q3
Process
Data
Q4
Write
register ‘f’
Example:
NEGF REG, 1
Before Instruction
REG =
After Instruction
REG =
0011 1010 [3Ah]
1100 0110 [C6h]
NOP
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Q1
Decode
No Operation
NOP
None
No operation
None
0000 0000
1111 xxxx
No operation.
1
1
0000
xxxx
0000
xxxx
Q2
No
operation
Q3
No
operation
Q4
No
operation
Example:
None.
 2007-2012 Microchip Technology Inc.
DS39778E-page 375