PIC18F2331_10 Datasheet, PDF (304/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PIC18F2331/2431/4331/4431
GOTO
Unconditional Branch
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
1st word (k<7:0>)
2nd word(k<19:8>)
Description:
[ label ] GOTO k
0  k  1048575
k  PC<20:1>
None
1110 1111 k₇kkk kkkk₀
1111 k₁₉kkk kkkk kkkk₈
GOTO allows an unconditional branch
anywhere within entire 2-Mbyte memory
range. The 20-bit value, ‘k’, is loaded
into PC<20:1>. GOTO is always a
two-cycle
instruction.
Words:
Cycles:
Q Cycle Activity:
Q1
Decode
2
2
Q2
Read literal
‘k’<7:0>,
No
operation
No
operation
Q3
No
operation
No
operation
Q4
Read literal
‘k’<19:8>,
Write to PC
No
operation
Example:
GOTO THERE
After Instruction
PC = Address (THERE)
INCF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Q1
Decode
Increment f
[ label ] INCF f [,d [,a]]
0  f  255
d  [0,1]
a  [0,1]
(f) + 1  dest
C, DC, N, OV, Z
0010 10da ffff ffff
The contents of register, ‘f’, are
incremented. If ‘d’ is ‘0’, the result is
placed in W. If ‘d’ is ‘1’, the result is
placed back in register, ‘f’. If ‘a’ is ‘0’,
the Access Bank will be selected, over-
riding the BSR value. If ‘a’ = 1, then the
bank will be selected as per the BSR
value.
1
1
Q2
Read
register ‘f’
Q3
Process
Data
Q4
Write to
destination
Example:
INCF
Before Instruction
CNT
=
Z
=
C
=
DC
=
0xFF
0
?
?
After Instruction
CNT
=
Z
=
C
=
DC
=
0x00
1
1
1
CNT,
DS39616D-page 304
 2010 Microchip Technology Inc.