Intel 253666-024US Manuel D’Utilisation
Vol. 2A 3-53
INSTRUCTION SET REFERENCE, A-M
AND—Logical AND
AND—Logical AND
Opcode
Instruction
64-Bit
Mode
Comp/Leg
Mode
Description
24 ib
AND AL, imm8
Valid
Valid
AL AND imm8.
25 iw
AND AX, imm16
Valid
Valid
AX AND imm16.
25 id
AND EAX, imm32
Valid
Valid
EAX AND imm32.
REX.W + 25 id
AND RAX, imm32
Valid
N.E.
RAX AND imm32 sign-
extended to 64-bits.
80 /4 ib
AND r/m8, imm8
Valid
Valid
r/m8 AND imm8.
REX + 80 /4 ib
AND r/m8
*
, imm8
Valid
N.E.
r/m64 AND imm8 (sign-
extended).
81 /4 iw
AND r/m16, imm16 Valid
Valid
r/m16 AND imm16.
81 /4 id
AND r/m32, imm32 Valid
Valid
r/m32 AND imm32.
REX.W + 81 /4
id
AND r/m64, imm32 Valid
N.E.
r/m64 AND imm32 sign
extended to 64-bits.
83 /4 ib
AND r/m16, imm8
Valid
Valid
r/m16 AND imm8 (sign-
extended).
83 /4 ib
AND r/m32, imm8
Valid
Valid
r/m32 AND imm8 (sign-
extended).
REX.W + 83 /4
ib
AND r/m64, imm8
Valid
N.E.
r/m64 AND imm8 (sign-
extended).
20 /r
AND r/m8, r8
Valid
Valid
r/m8 AND r8.
REX + 20 /r
AND r/m8
*
, r8
*
Valid
N.E.
r/m64 AND r8 (sign-
extended).
21 /r
AND r/m16, r16
Valid
Valid
r/m16 AND r16.
21 /r
AND r/m32, r32
Valid
Valid
r/m32 AND r32.
REX.W + 21 /r
AND r/m64, r64
Valid
N.E.
r/m64 AND r32.
22 /r
AND r8, r/m8
Valid
Valid
r8 AND r/m8.
REX + 22 /r
AND r8
*
, r/m8
*
Valid
N.E.
r/m64 AND r8 (sign-
extended).
23 /r
AND r16, r/m16
Valid
Valid
r16 AND r/m16.
23 /r
AND r32, r/m32
Valid
Valid
r32 AND r/m32.
REX.W + 23 /r
AND r64, r/m64
Valid
N.E.
r64 AND r/m64.
NOTES:
* In 64-bit mode, r/m8 can not be encoded to access the following byte registers if a REX prefix is
used: AH, BH, CH, DH.