PIC16F-ESLASHML datasheet(124/178 Pages) MICROCHIP

124 / 178 page

PIC16F627A/628A/648A

DS40044F-page 122

INCF

Increment f

Syntax:

[ label ]

INCF f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(f) + 1

→ (dest)

Status Affected:

Encoding:

1010

dfff

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 register ‘f’.

Words:

Cycles:

Example

INCF

REG1, 1

Before Instruction

REG1 = 0xFF

Z= 0

After Instruction

REG1 = 0x00

Z= 1

INCFSZ

Increment f, Skip if 0

Syntax:

[ label ]

INCFSZ f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(f) + 1

→ (dest), skip if result = 0

Status Affected:

None

Encoding:

1111

dfff

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 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.

Words:

Cycles:

1(2)

Example

HERE

INCFSZ

REG1, 1

GOTO

LOOP

CONTINUE •

•

Before Instruction

= address HERE

After Instruction

REG1 = REG1 + 1

if CNT = 0,

= address CONTINUE

if REG1

≠ 0,

= address HERE +1

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