Zilog Z8F0130 Manual do Utilizador descarregar pdf (Página 88)

100

101

eZ8

™

CPU Core

User Manual

UM012820-0810 ADC Instruction

ADC

Definition

Add with Carry.

Syntax

ADC dst, src

Operation

dst



dst + src + C

Description

The source operand and the Carry (C) flag are added to the destination

operand. Two’s-complement addition is performed. The sum is stored in

the destination operand. The contents of the source operand are not

affected. In multiple-precision (multibyte) arithmetic, this instruction per-

mits the carry from the addition of low-order byte operations to be carried

into the addition of high-order bytes.

Flags

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

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 313 314

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