Assembly Language quiz questions

Number of machine cycles required for RET instruction in 8085 microprocessor is

1. 1

2. 2

3. 3

4. 5

Which of the following interrupt has highest Priority?

1. INTR

2. TRAP

3. RST 7.5

4. RST 6.5

What is the content of Stack Pointer ?

1. Address of the current instruction

2. Address of the next instruction

3. Address of the top element of the stack

4. None of the above

Instructions performing actions in assembly language are called

1. imperative statements

2. declarative statements

3. directive statements

4. none of the above

In 8085 microprocessor, the value of the most significant bit of the result following the execution of any arithmetic or Boolean instruction is stored in the

1. carry status flag

2. auxiliary carry status flag

3. sign status flag

4. zero status flag

The instruction DEC N inform the assembler to

1. Decrement the content of N

2.  

   Decrement the data addressed by N

3.  

   Convert signed decimal number to binary

4.  

   None of the above

How many memory locations are required to store the instruction LXIH, 0800H in an 8085 assembly language program?

1. 1

2. 2

3. 3

4. 4

In 8085 which is/are the 16 bit registers?

1. Program Counter

2. Stack Pointer

3. Both A & B

4. None of the above

For execution of an interrupt applied at INTR, number of states required by 8085 Microprocessor are

1. 4

2. 6

3. 12

4. 18

Assembly language programs are written using

1. Hex code

2. Mnenonics

3. ASCII code

4. None of these View

Classify the following register(s) SI,DI

1. Index registers

2. General purpose registers

3. Segment registers

Which of the following instruction(s) can be performed only in CX register:

1. LOOP

2. MUL, DIV, CBW

3. ADD, SUB

The CX register full name is:

1. Accumulator register

2. Base register

3. Counter register

how many bits in one double word?

1. 8 bits

2. 16 bits

3. 32 bits

How many bytes in a double word

1. 1 byte

2. 2 byte

3. 4 byte

The result of logical operation: 1 XOR 0

1. logic 0

2. logic 1

The result of logical operation: 0 OR 0

1. logic 0

2. logic 1

What is the length of the 8088’s physical address?

1. 8 bits

2. 16 bits

3. 20 bits

The result of logical operation: 1 XOR 1

1. logic 0

2. logic 1

The result of logical operation: 1 OR 0

1. 0

2. 1