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Add a, n, Operation, Description – Zilog EZ80F916 User Manual

Page 100: Condition bits affected attributes

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eZ80

®

CPU

User Manual

UM007715-0415

CPU Instruction Set

91

ADD A, n

ADD without Carry

Operation

A  A+n

Description

The 8-bit immediate value n is added to the contents of the accumulator, A. The result is

stored in the accumulator.

Condition Bits Affected

Attributes

S

Set if result is negative; reset otherwise.

Z

Set if result is 0; reset otherwise.

H

Set if carry from bit 3; reset otherwise.

P/V

Set if overflow; reset otherwise.

N

Reset.

C

Set if carry from bit 7; reset otherwise.

Mnemonic

Operand

ADL Mode

Cycle

Opcode (hex)

ADD

A,n

X

2

C6, nn

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