CF745 datasheet(49/217 Pages) MICROCHIP

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Preliminary

DS30453B-page 49

PIC16C5X

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 incre-

mented. 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

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 incre-

mented. 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, then the next instruc-

tion, which is already fetched, is dis-

carded and an NOP is executed

instead making it a two cycle instruc-

tion.

Words:

Cycles:

1(2)

Example:

HERE

INCFSZ

CNT,

GOTO

LOOP

CONTINUE •

•

Before Instruction

address (HERE)

After Instruction

CNT

CNT + 1;

if CNT

address (CONTINUE);

if CNT

≠

address (HERE +1)

IORLW

Inclusive OR literal with W

Syntax:

[

label ]

IORLW k

Operands:

≤ k ≤ 255

Operation:

(W) .OR. (k)

→ (W)

Status Affected:

Encoding:

1101

kkkk

Description:

The contents of the W register are

OR’ed with the eight bit literal 'k'. The

result is placed in the W register.

Words:

Cycles:

Example:

IORLW

0x35

Before Instruction

0x9A

After Instruction

0xBF

IORWF

Inclusive OR W with f

Syntax:

[

label ]

IORWF

f,d

Operands:

≤ f ≤ 31

∈ [0,1]

Operation:

(W).OR. (f)

→ (dest)

Status Affected:

Encoding:

0001

00df

ffff

Description:

Inclusive OR the W register with regis-

ter 'f'. 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:

IORWF

RESULT, 0

Before Instruction

RESULT =

0x13

0x91

After Instruction

RESULT =

0x13

0x93

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