Zilog Z8F0130 Manual do Utilizador descarregar pdf (Página 95)

100

101

eZ8

™

CPU Core

User Manual

UM012820-0810 ADD Instruction

ADD

Definition

Add

Syntax

ADD dst, src

Operation

dst



dst + src

Description

Add the source operand to the destination operand. Perform two’s-com-

plement addition. Store the sum in the destination operand. The contents

of the source operand are not affected.

Flags

Attributes

C Set if there is a carry from bit 7; reset otherwise

Z Set if the result is zero; reset otherwise

S Set if the result is negative; reset otherwise

V Set if an arithmetic overflow occurs; reset otherwise

D Reset to 0

H Set if there is a carry from bit 3 of the result; reset otherwise

Mnemonic

Destination,

Source

Code

(Hex) Operand 1 Operand 2 Operand 3

ADD r1, r2 02 {r1, r2} — —

ADD r1, @r2 03 {r1, r2} — —

1 2 ... 90 91 92 93 94 95 96 97 98 99 100 ... 313 314

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