PIC12F508 datasheet(59/106 Pages) MICROCHIP

59 / 106 page

Preliminary

DS41236D-page 57

PIC12F508/509/16F505

ADDWF

Add W and f

Syntax:

[ label ] ADDWF

f,d

Operands:

≤ f ≤ 31

∈ [0,1]

Operation:

(W) + (f)

→ (dest)

Status Affected: C, DC, Z

Description:

Add the contents of the W register

and register ‘f’. If ‘d’ is’0’, the result

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

‘1’, the result is stored back in

ANDLW

AND literal with W

Syntax:

[ label ] ANDLW

Operands:

≤ k ≤ 255

Operation:

(W).AND. (k)

→ (W)

Status Affected: Z

Description:

The contents of the W register are

AND’ed with the eight-bit literal ‘k’.

The result is placed in the W

ANDWF

AND W with f

Syntax:

[ label ] ANDWF

f,d

Operands:

≤ f ≤ 31

∈ [0,1]

Operation:

(W) .AND. (f)

→ (dest)

Status Affected: Z

Description:

The contents of the W register are

AND’ed with register ‘f’. If ‘d’ is ‘0’,

the result is stored in the W register.

If ‘d’ is ‘1’, the result is stored back

in register ‘f’.

BCF

Bit Clear f

Syntax:

[ label ] BCF

f,b

Operands:

≤ f ≤ 31

≤ b ≤ 7

Operation:

→ (f<b>)

Status Affected: None

Description:

Bit ‘b’ in register ‘f’ is cleared.

BSF

Bit Set f

Syntax:

[ label ] BSF f,b

Operands:

≤ f ≤ 31

≤ b ≤ 7

Operation:

→ (f<b>)

Status Affected: None

Description: Bit ‘b’ in register ‘f’ is set.

BTFSC

Bit Test f, Skip if Clear

Syntax:

[ label ] BTFSC f,b

Operands:

≤ f ≤ 31

≤ b ≤ 7

Operation:

skip if (f<b>) = 0

Status Affected: None

Description:

If bit ‘b’ in register ‘f’ is ‘0’, then the

next instruction is skipped.

If bit ‘b’ is ‘0’, then the next instruc-

tion fetched during the current

instruction execution is discarded,

and a NOP is executed instead,

making this a two-cycle instruction.

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