PIC17C752-08SLASHP datasheet(200/320 Pages) MICROCHIP

200 / 320 page

PIC17C75X

DS30264A-page 200

INFSNZ

Increment f, skip if not 0

Syntax:

[

label]

INFSNZ f,d

Operands:

≤ f ≤ 255

∈ [0,1]

Operation:

(f) + 1

→ (dest),

skip if not 0

Status Affected:

None

Encoding:

0010

010d

ffff

Description:

The contents of register 'f' are incre-

mented. If 'd' is 0 the result is placed in

WREG. If 'd' is 1 the result is placed

back in register 'f'.

If the result is not 0, the next instruction,

which is already fetched, is discarded,

and an NOP is executed instead mak-

ing it a two-cycle instruction.

Words:

Cycles:

1(2)

Q Cycle Activity:

Decode

Read

Process

Data

Write to

destination

If skip:

operation

Example:

HERE

INFSNZ

REG, 1

ZERO

NZERO

Before Instruction

REG

After Instruction

REG

REG + 1

If REG

PC =

Address (ZERO)

If REG

PC =

Address (NZERO)

IORLW

Inclusive OR Literal with WREG

Syntax:

[

label ]

IORLW k

Operands:

≤ k ≤ 255

Operation:

(WREG) .OR. (k)

→ (WREG)

Status Affected:

Encoding:

1011

0011

kkkk

Description:

The contents of WREG are OR’ed with

the eight bit literal 'k'. The result is

placed in WREG.

Words:

Cycles:

Q Cycle Activity:

Decode

Read

literal 'k'

Process

Data

Write to

WREG

Example:

IORLW

0x35

Before Instruction

WREG

0x9A

After Instruction

WREG

0xBF

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