Question

how many no of times the instruction sequence below will loop before coming out of loop?

A1;  MOV AL,00H

      INC AL

      JNZ A1

Answer 1

It will run infinite time, because in each step you are loding 00H into accumulater and incrementing it and checking that, jump if accumulator is not zero. It will never be zero. It will always be 1.

Comments

OBTIONS ARE:

1. 1

2. 255

3. 256

4. WILL COME OUT OF LOOP

 

WHICH ONE EXCATLY?from given obtions?

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@neha

If the code is as follows 

     MOV AL,00H

A1:  INC AL

     JNZ A1

Then it will run 256 times. else It will never come out of loop. 

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rude kindly give  reference or link of  some material regarding 8085