PIC16F62X
GOTO
Unconditional Branch
[ label ] GOTO k
0 ≤ k ≤ 2047
INCFSZ
Syntax:
Increment f, Skip if 0
Syntax:
[ label ] INCFSZ f,d
Operands:
Operation:
Operands:
0 ≤ f ≤ 127
d
[0,1]
k → PC<10:0>
PCLATH<4:3> → PC<12:11>
Operation:
(f) + 1 → (dest), skip if result = 0
Status Affected:
Encoding:
None
Status Affected:
Encoding:
None
10
1kkk
kkkk
kkkk
00
1111
dfff
ffff
GOTOis an unconditional branch. The
eleven bit immediate value is loaded
into PC bits <10:0>. The upper bits of
PC are loaded from PCLATH<4:3>.
GOTOis a two-cycle instruction.
The contents of register ’f’ are
Description:
Description:
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 NOPis executed instead making it a
two-cycle instruction.
Words:
Cycles:
Example
1
2
Words:
Cycles:
Example
1
GOTO THERE
1(2)
After Instruction
HERE
INCFSZ
GOTO
CNT,
LOOP
1
PC
=
Address THERE
CONTINUE •
•
•
Before Instruction
PC
=
address HERE
After Instruction
CNT
=
CNT + 1
if CNT=
0,
PC
if CNT≠
=
address CONTINUE
0,
PC
=
address HERE +1
INCF
Increment f
IORLW
Inclusive OR Literal with W
[ label ] IORLW k
0 ≤ k ≤ 255
Syntax:
Operands:
[ label ] INCF f,d
Syntax:
0 ≤ f ≤ 127
Operands:
Operation:
Status Affected:
Encoding:
Description:
d
[0,1]
(W) .OR. k → (W)
Z
Operation:
(f) + 1 → (dest)
Status Affected:
Encoding:
Z
11
1000
kkkk
kkkk
00
1010
dfff
ffff
The contents of the W register is
OR’ed with the eight bit literal 'k'. The
result is placed in the W register.
The contents of register ’f’ are
Description:
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’.
Words:
Cycles:
Example
1
1
Words:
Cycles:
Example
1
1
IORLW
0x35
Before Instruction
INCF
CNT, 1
W
=
0x9A
Before Instruction
After Instruction
CNT
Z
=
=
0xFF
0
W
=
0xBF
1
Z
=
After Instruction
CNT
Z
=
=
0x00
1
1999 Microchip Technology Inc.
Preliminary
DS40300B-page 119
MICROCHIP [ MICROCHIP ]
