made easy test series

Question

What should I assume as the size of HALT instruction ? HALT instruction comes under which type of instruction

Comments

is it 3028 ??

---

I also think it should be 3028

because Halt is an unconditional branch to the same instruction making the value of program counter freeze.

as your question is what is the size of HALT so it should be 2 bytes as per question.

---

yes, the answer is 3028.

---

Shivam Kasat SHUBHAM SHASTRI plzz add answer

---

@deepanshu I don't have any reference for my answer, I have just read this stuff so I know it.
Posting it as answer would not be appropriate.

---

I1: 3000
I2: 3008
I3: 3012
I4: 3016
I5: 3024
I6: 3028
I7: 3030

So when interrupt occurs at I6, program counter contains 3030 right? so return address should be 3030 correct?

---

yes i too think 3030 is correct!

Answer 1

I1: 3000 - 3007 // since it is a memory transfer op.

I2: 3008 - 3011// it is an ALU oper.
I3: 3012 - 3015 // it is also an ALU por.
I4: 3016 - 3023 // memory transfer opr.
I5: 3024 - 3027 // ALU oper.
I6: 3028 - 3029 // branch operation
I7: 3030-3033 // ALU Opr.

Halt is an un-conditional branch to the same instruction, i.e, It is a branch instruction.

further more irrespective of whether interrupt occurs during execution of instruction or after execution of instruction next address instruction will be saved to the stack:

So 3030 will be stored in the stack.

reference:  https://gateoverflow.in/1058/gate2004-63

Comments

yes,change it

---

@Gate Fever Correct now?

---

yes