PIC18F010 datasheet(119/176 Pages) MICROCHIP

119 / 176 page

 2001 Microchip Technology Inc.

Preliminary

DS41142A-page 117

PIC18F010/020

INCFSZ

Increment f, skip if 0

Syntax:

[ label ]

INCFSZ f [ ,d [,a] ]

Operands:

≤ f ≤ 255

∈ [0,1]

Operation:

(f) + 1

→ dest,

skip if result = 0

Status Affected:

None

Encoding:

0011

11da

ffff

Description:

The contents of register ’f’ are

incremented. If ’d’ is 0, the result is

placed in WREG. If ’d’ is 1, the

result is placed back in register ’f’

(default).

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. If ’a’ is 0, the Access

Bank will be selected, overriding

the BSR value. If ’a’ is 1, the Bank

will be selected as per the BSR

value.

Words:

Cycles:

1(2)

Note: 3 cycles if skip and followed

by a 2-word instruction.

Q Cycle Activity:

Decode

Read

Process

Data

Write to

destination

If skip:

operation

If skip and followed by 2-word instruction:

operation

Example:

HERE

INCFSZ

CNT

NZERO

ZERO

Before Instruction

Address (HERE)

After Instruction

CNT

CNT + 1

If CNT

PC =

Address(ZERO)

If CNT

≠

PC =

Address(NZERO)

INFSNZ

Increment f, skip if not 0

Syntax:

[label]

INFSNZ f [, d [,a] ]

Operands:

≤ f ≤ 255

∈ [0,1]

Operation:

(f) + 1

→ dest,

skip if result

≠ 0

Status Affected:

None

Encoding:

0100

10da

ffff

Description:

The contents of register 'f' are

incremented. If 'd' is 0, the result is

placed in WREG. If 'd' is 1, the

result is placed back in register 'f'

(default).

If the result is not 0, the next

instruction, which is already

fetched, is discarded, and a NOP is

executed instead making it a two-

cycle instruction. If ’a’ is 0, the

Access Bank will be selected, over-

riding the BSR value. If ’a’ is 1, the

Bank will be selected as per the

BSR value.

Words:

Cycles:

1(2)

Note: 3 cycles if skip and followed

by a 2-word instruction.

Q Cycle Activity:

Decode

Read

Process

Data

Write to

destination

If skip:

operation

If skip and followed by 2-word instruction:

operation

Example:

HERE

INFSNZ

REG

ZERO

NZERO

Before Instruction

Address (HERE)

After Instruction

REG

REG + 1

If REG

≠

PC =

Address (NZERO)

If REG

PC =

Address (ZERO)

PIC18F010 Datasheet(PDF) 119 Page - Microchip Technology

PIC18F010 Datasheet(HTML) 119 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL