OPCODES Flashcards

1
Q

CALL

A

Call subroutine

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2
Q

DEC

A

Decrement

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3
Q

INC

A

Increment

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4
Q

JMP

A

Unconditional Jump

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5
Q

MOV

A

Move (copy)

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6
Q

PUSH

A

Push onto stack

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7
Q

POP

A

Pop from stack

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8
Q

XCHG

A

Exchange eAX with

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9
Q

XOR

A

Logical exclusive OR

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10
Q

ADD

A

Add

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11
Q

AND

A

Logical and

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12
Q

CMP

A

Compare eAX

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13
Q

INT

A

Interrupt

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14
Q

INT3

A

Interrupt 3

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15
Q

JA

A

Jump if above

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16
Q

JB

A

Jump if below

17
Q

JBE

A

Jump if below or equal

18
Q

JCXZ

A

Jmp if CX zero

19
Q

JE

A

Jump if equal

20
Q

JL

A

Jump if less than

21
Q

JLE

A

Jump if less than or equal

22
Q

JNB

A

Jump if not below

23
Q

JNL

A

Jump if not less

24
Q

JNLE

A

Jump if not less than or equal

25
Q

JNO

A

Jump if no overflow

26
Q

JNS

A

Jump if no sign (positive)

27
Q

JNZ

A

Jump if not zero

28
Q

LOOP

A

Loop operation

29
Q

NOP

A

No Operation

30
Q

NOT

A

Invert each bit

31
Q

OR

A

Logical Or

32
Q

RET

A

Return from subroutine

33
Q

RET +OFF

A

Return + Offset

34
Q

SUB

A

Subtract

35
Q

WAIT

A

Suspend exec until BUSY # pin