CF745 datasheet(53/217 Pages) MICROCHIP

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Preliminary

DS30453B-page 53

PIC16C5X

SWAPF

Swap Nibbles in f

Syntax:

[

label ] SWAPF f,d

Operands:

≤ f ≤ 31

∈ [0,1]

Operation:

(f<3:0>)

→ (dest<7:4>);

(f<7:4>)

→ (dest<3:0>)

Status Affected:

None

Encoding:

0011

10df

ffff

Description:

The upper and lower nibbles of register

'f' are exchanged. If 'd' is 0 the result is

placed in W register. If 'd' is 1 the result

is placed in register 'f'.

Words:

Cycles:

Example

SWAPF

REG1,

Before Instruction

REG1

0xA5

After Instruction

REG1

0xA5

0X5A

TRIS

Load TRIS Register

Syntax:

[

label ] TRIS

Operands:

f = 5, 6 or 7

Operation:

(W)

→ TRIS register f

Status Affected:

None

Encoding:

0000

0fff

Description:

TRIS register 'f' (f = 5, 6, or 7) is loaded

with the contents of the W register

Words:

Cycles:

Example

TRIS

PORTA

Before Instruction

0XA5

After Instruction

TRISA

0XA5

XORLW

Exclusive OR literal with W

Syntax:

[

label]

XORLW k

Operands:

≤ k ≤ 255

Operation:

(W) .XOR. k

→ (W)

Status Affected:

Encoding:

1111

kkkk

Description:

The contents of the W register are

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

result is placed in the W register.

Words:

Cycles:

Example:

XORLW

0xAF

Before Instruction

0xB5

After Instruction

0x1A

XORWF

Exclusive OR W with f

Syntax:

[

label ] XORWF

f,d

Operands:

≤ f ≤ 31

∈ [0,1]

Operation:

(W) .XOR. (f)

→ (dest)

Status Affected:

Encoding:

0001

10df

ffff

Description:

Exclusive OR the contents of the W

result is stored in the W register. If 'd' is

1 the result is stored back in register 'f'.

Words:

Cycles:

Example

XORWF

REG,1

Before Instruction

REG

0xAF

0xB5

After Instruction

REG

0x1A

0xB5

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