PIC16F526-ISLASHP datasheet(75/122 Pages) MICROCHIP

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DS41326D-page 75

PIC16F526

DECF

Decrement f

Syntax:

[ label ] DECF f,d

Operands:

 f  31

 [0,1]

Operation:

(f) – 1

 (dest)

Status Affected: Z

Description:

Decrement register ‘f’. If ‘d’ is ‘0’,

the result is stored in the W

stored back in register ‘f’.

DECFSZ

Decrement f, Skip if 0

Syntax:

[ label ] DECFSZ f,d

Operands:

 f  31

 [0,1]

Operation:

(f) – 1

 d; skip if result = 0

Status Affected: None

Description:

The contents of register ‘f’ are

decremented. If ‘d’ is ‘0’, the result

is placed in the W register. If ‘d’ is

‘1’, the result is placed back in

If the result is ‘0’, the next instruc-

tion, which is already fetched, is

discarded and a NOP is executed

instead making it a two-cycle

instruction.

GOTO

Unconditional Branch

Syntax:

[ label ]

GOTO k

Operands:

 k  511

Operation:

 PC<8:0>;

STATUS<6:5>

 PC<10:9>

Status Affected: None

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.

INCF

Increment f

Syntax:

[ label ] INCF f,d

Operands:

 f  31

 [0,1]

Operation:

(f) + 1

 (dest)

Status Affected: Z

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

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

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

If the result is ‘0’, then the next

instruction, which is already

fetched, is discarded and a NOP is

executed instead making it a

two-cycle instruction.

IORLW

Inclusive OR literal with W

Syntax:

[ label ] IORLW k

Operands:

 k  255

Operation:

(W) .OR. (k)

 (W)

Status Affected: Z

Description:

The contents of the W register are

OR’ed with the eight-bit literal ‘k’.

The result is placed in the

W register.

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