PIC18LF8410-I/PTQTP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF8410-I/PTQTP

64/80-Pin Flash Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC18F6310/6410/8310/8410

24.2.2 EXTENDED INSTRUCTION SET

ADDFSR

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Q Cycle Activity:

Q1

Decode

Add Literal to FSR

ADDFSR f, k

0 ≤ k ≤ 63

f ∈ [0, 1, 2]

FSR(f) + k → FSR(f)

None

1110 1000 ffkk kkkk

The 6-bit literal ‘k’ is added to the

contents of the FSR specified by ‘f’.

1

1

Q2

Read

literal ‘k’

Q3

Process

Data

Q4

Write to

FSR

Example:

ADDFSR 2, 23h

Before Instruction

FSR2 =

After Instruction

FSR2 =

03FFh

0422h

ADDULNK

Add Literal to FSR2 and Return

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

ADDULNK k

0 ≤ k ≤ 63

FSR2 + k → FSR2,

(TOS) → PC

None

1110 1000

11kk

kkkk

Description:

Words:

Cycles:

Q Cycle Activity:

Q1

Decode

No

Operation

The 6-bit literal ‘k’ is added to the

contents of FSR2. A RETURN is then

executed by loading the PC with the

TOS.

The instruction takes two cycles to

execute; a NOP is performed during the

second cycle.

This may be though of as a special case

of the ADDFSR instruction, where f = 3

(binary ‘11’); it operates only on FSR2.

1

2

Q2

Read

literal ‘k’

No

Operation

Q3

Process

Data

No

Operation

Q4

Write to

FSR

No

Operation

Example:

ADDULNK 23h

Before Instruction

FSR2 =

PC

=

After Instruction

FSR2 =

PC

=

03FFh

0100h

0422h

(TOS)

DS39635A-page 330

Preliminary

 2004 Microchip Technology Inc.

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