PIC16F5X datasheet(49/90 Pages) MICROCHIP

49 / 90 page

 2004 Microchip Technology Inc.

DS41213C-page 47

PIC16F5X

GOTO

Unconditional Branch

Syntax:

[ label ]

GOTO k

Operands:

≤ k ≤ 511

Operation:

→ PC<8:0>;

Status<6:5>

→ PC<10:9>

Status Affected:

None

Encoding:

101k

kkkk

Description:

GOTO

is an unconditional branch.

The 9-bit immediate value is

loaded into PC bits <8:0>. The

upper bits of PC are loaded from

Status<6:5>. GOTO is a two-cycle

instruction.

Words:

Cycles:

Example:

GOTO THERE

After Instruction

address (THERE)

INCF

Increment f

Syntax:

[ label ]

INCF f, d

Operands:

≤ f ≤ 31

∈ [0,1]

Operation:

(f) + 1

→ (dest)

Status Affected:

Encoding:

0010

10df

ffff

Description:

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

Words:

Cycles:

Example:

INCF

CNT,

Before Instruction

CNT

0xFF

After Instruction

CNT

0x00

INCFSZ

Increment f, Skip if 0

Syntax:

[ label ]

INCFSZ f, d

Operands:

≤ f ≤ 31

∈ [0,1]

Operation:

(f) + 1

→ (dest), skip if result = 0

Status Affected:

None

Encoding:

0011

11df

ffff

Description:

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

the next instruction, which is

already fetched, is discarded and

a NOP is executed instead making

it a two-cycle instruction.

Words:

Cycles:

1(2)

Example:

HERE

INCFSZ

CNT, 1

GOTO

LOOP

CONTINUE •

•

Before Instruction

address (HERE)

After Instruction

CNT

CNT + 1;

if CNT

address (CONTINUE);

if CNT

≠

address (HERE +1)

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