780964 datasheet(61/129 Pages) NEC

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CHAPTER 5 EXPLANATION OF INSTRUCTIONS

User's Manual U12326EJ4V0UM

Exclusive Or

XOR

Exclusive Logical Sum of Byte Data

[Instruction format]

XOR dst, src

[Operation]

dst

← dst ∨ src

[Operand]

Mnemonic

Operand(dst,src)

Mnemonic

Operand(dst,src)

XOR

A, #byte

XOR

A, !addr16

saddr, #byte

A, [HL]

A, r

Note

A, [HL+byte]

r, A

A, [HL+B]

A, saddr

A, [HL+C]

Note Except r = A

[Flag]

ZAC

[Description]

•

The bit-wise exclusive logical sum is obtained from the destination operand (dst) specified by the 1st operand

and the source operand (src) specified by the 2nd operand and the result is stored in the destination operand

(dst).

Logical negation of all bits of the destination operand (dst) is possible by selecting #0FFH for the source

operand (src) with this instruction.

•

If the exclusive logical sum shows that all bits are 0, the Z flag is set (1). In all other cases, the Z flag is

cleared (0).

[Description example]

XOR A, L;

The bit-wise exclusive logical sum of the A and L registers is obtained and the result is stored in

the A register.

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