Zilog Z80380 Instrukcja Użytkownika Pobierz pdf (Strona 61)

5-27

Z380

™

USER'S MANUAL

ZILOG

DC-8297-03

AND

AND (BYTE)

AND [A,]src src = R, RX, IM, IR, X

Operation: A ← A AND src

A logical AND operation is performed between the corresponding bits of the source operand

and the accumulator and the result is stored in the accumulator. A 1 is stored wherever the

corresponding bits in the two operands are both 1s; otherwise a 0 is stored. The contents

of the source are unaffected.

Flags: S: Set if the most significant bit of the result is set; cleared otherwise

Z: Set if all bits of the result are zero; cleared otherwise

H: Set

P: Set if the parity is even; cleared otherwise

N: Cleared

C: Cleared

Addressing Execute

Mode Syntax Instruction Format Time Note

R: AND [A,]R 10100-r- 2

RX: AND [A,]RX 11y11101 1010010w 2

IM: AND [A,]n 11100110 ——n— 2

IR: AND [A,](HL) 10100110 2+r

X: AND [A,](XY+d) 11y11101 10100110——d— 4+r I

Field Encodings: r: per convention

y: 0 for IX, 1 for IY

w: 0 for high byte, 1 for low byte

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 267 268

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Zilog Z80380 Instrukcja Użytkownika Strona 61