Quiz on 8086 Instruction Set

The instruction that is used to transfer the data from source operand to destination operand is

• data copy/transfer instruction

• branch instruction

• arithmetic/logical instruction

• string instruction

Which of the following is not a data copy/transfer instruction?

• MOV

• PUSH

• DAS

• POP

The instructions that involve various string manipulation operations are

• branch instructions

• flag manipulation instructions

• shift and rotate instructions

• string instructions

Which of the following instruction is not valid?

• MOV AX, B

• MOV DS, 5000H

• MOV AX, 5000H

• PUSH AX

In PUSH instruction, after each execution of the instruction, the stack pointer is

• incremented by 1

• decremented by 1

• incremented by 2

• decremented by 2

The instruction that pushes the contents of the specified register/memory location on to the stack is

• PUSHF

• POPF

• PUSH

• POP

The instructions that are used for reading an input port and writing an output port respectively are

• MOV, XCHG

• MOV, IN

• IN, MOV

• IN, OUT

The instruction that is used for finding out the codes in case of code conversion problems is

• XCHG

• XLAT

• XOR

• JCXZ

The instruction that loads effective address formed by destination operand into the specified source register is

• LEA

• LDS

• LES

• LAHF

The instruction that pushes the flag register on to the stack is

• PUSH

• POP

• PUSHF

• POPF