Microprocessor Addressing Modes Quiz

The contents of a base register are added to the contents of index register in

• indexed addressing mode

• based indexed addressing mode

• relative based indexed addressing mode

• based indexed and relative based indexed addressing mode

The instruction, MOV AX, [2500H] is an example of

• immediate addressing mode

• direct addressing mode

• indirect addressing mode

• register addressing mode

If the data is present in a register and it is referred using the particular register, then it is

• direct addressing mode

• register addressing mode

• indexed addressing mode

• immediate addressing mode

If the offset of the operand is stored in one of the index registers, then it is

• based indexed addressing mode

• relative based indexed addressing mode

• indexed addressing mode

• none of the mentioned

The instruction, MOV AX, 1234H is an example of

• register addressing mode

• direct addressing mode

• immediate addressing mode

• based indexed addressing mode

Which of the following is the correct sequence of operations in a microprocessor?

• Opcode fetch, memory read, memory write, I/O read, I/O write

• Opcode fetch, memory write, memory read, I/O read, I/O write

• I/O read, opcode fetch, memory read, memory write, I/O write

• I/O read, opcode fetch, memory write, memory read, I/O write

Which of the following flag condition is used for BCD arithmetic operations in microprocessor?

• Sign flag

• Auxiliary carry flag

• Parity flag

• Zero flag

How many address lines are present in 8086 microprocessor?

• 16

• 20

• 32

• 40

A memory connected to a microprocessor has 20 address lines and 16 data lines. What will be the memory capacity?

• 8 KB

• 2 MB

• 64 KB

• 1 MB

Which of the following is not a status flag in microprocessor?

• Overflow flag

• Direction flag

• Interrupt flag

• Index flag