PIC16C620 Microchip Technology, PIC16C620 Datasheet - Page 67

• Manufacturer Part Number: PIC16C620
• Description: EPROM-Based 8-Bit CMOS Microcontroller
• Manufacturer: Microchip Technology

GOTO
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
INCF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
1998 Microchip Technology Inc.
Unconditional Branch
[ label ]
0
k
PCLATH<4:3>
None
GOTO is 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>.
GOTO is a two-cycle instruction.
1
2
After Instruction
Increment f
[ label ]
0
d
(f) + 1
Z
The contents of register 'f' are
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'.
1
1
Before Instruction
After Instruction
GOTO THERE
INCF
10
00
k
f
[0,1]
PC<10:0>
127
2047
PC =
CNT
Z
CNT
Z
(dest)
GOTO k
INCF f,d
1kkk
1010
CNT, 1
PC<12:11>
Address THERE
=
=
=
=
kkkk
dfff
0xFF
0
0x00
1
kkkk
ffff
Preliminary
INCFSZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
IORLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
Increment f, Skip if 0
[ label ]
0
d
(f) + 1
None
The contents of register 'f' are
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 NOP is executed instead making it
a two-cycle instruction
1
1(2)
Before Instruction
After Instruction
Inclusive OR Literal with W
[ label ]
0
(W) .OR. k
Z
The contents of the W register is
OR’ed with the eight bit literal 'k'. The
result is placed in the W register
1
1
Before Instruction
After Instruction
HERE
CONTINUE •
IORLW
00
11
PC
CNT
if CNT=
PC
if CNT
PC
f
k
[0,1]
PIC16C62X
127
255
W
W
Z
(dest), skip if result = 0
INCFSZ f,d
IORLW k
=
=
=
=
1111
1000
0x35
INCFSZ
GOTO
•
•
=
=
=
(W)
address HERE
CNT + 1
0,
address CONTINUE
0,
address HERE +1
DS30235G-page 67
0x9A
0xBF
1
dfff
kkkk
.
LOOP
CNT,
ffff
kkkk
.
1