Motorola M68000 User Manual download pdf (Page 56)

Integer Instructions

MOTOROLA M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL 4-15

AND AND Logical AND

(M68000 Family)

Operation: Source L Destination → Destination

Assembler AND < ea > ,Dn

Syntax: AND Dn, < ea >

Attributes: Size = (Byte, Word, Long)

Description: Performs an AND operation of the source operand with the destination

operand and stores the result in the destination location. The size of the operation can

be speciﬁed as byte, word, or long. The contents of an address register may not be

used as an operand.

Condition Codes:

X — Not affected.

N — Set if the most signiﬁcant bit of the result is set; cleared otherwise.

Z — Set if the result is zero; cleared otherwise.

V — Always cleared.

C — Always cleared.

Instruction Format:

Instruction Fields:

Opmode ﬁeld

XNZVC

—

1514131211109876543210

1100 REGISTER OPMODE

EFFECTIVE ADDRESS

MODE REGISTER

Byte Word Long Operation

000 001 010 < ea > Λ Dn → Dn

100 101 110 Dn Λ < ea > → < ea >

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 91 92

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Motorola M68000 User Manual Page 56