PIC18F010T-I/SN 데이터 시트보기 (PDF) - Microchip Technology

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PIC18F010T-I/SN

High Performance Microcontrollers

Microchip Technology 

PIC18F010/020

SWAPF

Swap nibbles in f

Syntax:

[ label ] SWAPF f [ ,d [,a] ]

Operands:

0 ≤ f ≤ 255

d ∈ [0,1]

a ∈ [0,1]

Operation:

(f<3:0>) → dest<7:4>,

(f<7:4>) → dest<3:0>

Status Affected: None

Encoding:

0011 10da ffff ffff

Description:

The upper and lower nibbles of reg-

ister ’f’ are exchanged. If ’d’ is 0, the

result is placed in WREG. If ’d’ is 1,

the result is placed in register ’f’

(default). 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:

1

Cycles:

1

Q Cycle Activity:

Q1

Decode

Q2

Read

register ’f’

Q3

Process

Data

Q4

Write to

destination

Example:

SWAPF REG

Before Instruction

REG = 0x53

After Instruction

REG = 0x35

DS41142A-page 134

Preliminary

 2001 Microchip Technology Inc.

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