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NAME

OR -- Logical OR

SYNOPSIS

OR	<ea>,Dn
OR	Dn,<ea>

Size = (Byte, Word, Long)

FUNCTION

Performs an OR operation on the destination operand with the source operand.

FORMAT

15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	0	0	0	REGISTER			OP-MODE			MODE			REGISTER
										<ea>

OP-MODE

Byte	Word	Long	Operation

000	001	010	<ea> OR <Dn> --> <Dn>
100	101	110	<Dn> OR <ea> --> <ea>

REGISTER

If <ea> specifies destination operand, addressing modes allowed are:

Addressing Mode	Mode	Register
Dn	-	-
An	-	-
(An)	010	No reg. An
(An)+	011	No reg. An
-(An)	100	No reg. An
(d16,An)	101	No reg. An
(d8,An,Xi)	110	No reg. An
(bd,An,Xi)	110	No reg. An
([bd,An,Xi]od)	110	No reg. An
([bd,An],Xi,od)	110	No reg. An

Addressing Mode	Mode	Register
Abs.W	111	000
Abs.L	111	001
(d16,PC)	-	-
(d8,PC,Xi)	-	-
(bd,PC,Xi)	-	-
([bd,PC,Xi],od)	-	-
([bd,PC],Xi,od)	-	-
#data	-	-

If <ea> specifies source operand, addressing modes allowed are:

Addressing Mode	Mode	Register
Dn	000	No reg. Dn
An	-	-
(An)	010	No reg. An
(An)+	011	No reg. An
-(An)	100	No reg. An
(d16,An)	101	No reg. An
(d8,An,Xi)	110	No reg. An
(bd,An,Xi)	110	No reg. An
([bd,An,Xi]od)	110	No reg. An
([bd,An],Xi,od)	110	No reg. An

Addressing Mode	Mode	Register
Abs.W	111	000
Abs.L	111	001
(d16,PC)	111	010
(d8,PC,Xi)	111	011
(bd,PC,Xi)	111	011
([bd,PC,Xi],od)	111	011
([bd,PC],Xi,od)	111	011
#data	111	100

RESULT

X	-	Not Affected
N	-	Set to the value of the most significant bit.
Z	-	Set if the result is zero.
V	-	Always cleared
C	-	Always cleared

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Änderungen und Irrtümer vorbehalten. Letzte Änderung:
11 November 2004.
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