Intel 80287, 80286 manual AND-Logical

THE 80286 INSTRUCTION SET

AND-Logical AND

Opcode			Instruction		Clocks	Description
20	Ir		AND	eb,rb	2,mem=7	Logical-AND byte register into EA byte
21	Ir		AND	ew,rw	2,mem=7	Logical-AND word register into EA word
22	Ir		AND	rb,eb	2,mem=7	Logical-AND EA byte into byte register
23	Ir		AND	rw,ew	2,mem=7	Logical-AND EA word into word register
24	db		AND	AL,db	3	Logical-AND immediate byte into AL
25	dw		AND	AX,dw	3	Logical-AND immediate word into AX
80	14	db	AND	eb,db	3,mem=7	Logical-AND immediate byte into EA byte
81	14	dw	AND	eW,dw	3,mem=7	Logical-AND immediate word into EA word

FLAGS MODIFIED

Overfiow=O, sign, zero, parity, carry=O

FLAGS UNDEFINED

Auxiliary carry

OPERATION

Each bit of the result is a 1 if both corresponding bits of the operands were 1; it is 0 otherwise.

PROTECTED MODE EXCEPTIONS

#GP(O) if the result is in a non-writable segment. #GP(O) for an illegal memory operand effective address in the CS, DS, or ES segments; #SS(O) for an illegal address in the SS segment.

REAL ADDRESS MODE EXCEPTIONS

Interrupt 13 for a word operand at offset OFFFFH.

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