Assembler Interview Questions
Questions Answers Views Company eMail

What is the use of TRT instruction and how it is working?

Wipro, HCL, IBM,

7 24968

How are data passed from JCL parm to assembler program. And how is data passed from a calling program to an assembler called program.

HCL, IBM,

3 9875

Why can only 256 bytes be moved from one address to another in a MVC?

HCL, CSC, IBM,

6 9048




What is base register?

Infosys, IBM,

23 71774

What is house keeping in assembler? And explain the following code HELLOTSO START 0 * PRINT NOGEN BEGIN SAVE (14,12) LR 12,15 USING TYPE,12 ST 13,SAVE+4 LA 11,SAVE ST 11,8(13) LR 13,11

Mind Tree,

6 13106

How do you initialize a register to 0000?

HCL,

10 13535

Why do we use "drop"? What does "using" do?

4 7207

What is the difference in data type "X" and "P"?

5 6955




Why do we have multiple base registers in certain programs?

IBM,

4 8829

WHAT WILL HAPPEN IF WE DROP THE BASE REGISTER IN THE PGM WHICH CONTAINS ONLY ONE BASEREG?

Tech Mahindra, IBM,

4 6681

How we can Pass the parameters from JCL to assembler Pgm?

Tech Mahindra,

4 10422

How we can retrieve the instream data in SYSIN ?

Tech Mahindra,

2 5824

Can we use an equated value as operand for an MVC instruction? Reason for the same

IBM,

8 6840

about ICM instruction.

EDS,

4 11349

about maximum displacement and how to cross this limit.

EDS,

2 5620


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Un-Answered Questions { Assembler }

How are data passed from jcl parm to assembler program?

36


Explain about house keeping in assembler?

27


How is data passed from a calling program to an assembler called program?

20


What does "using" do?

22


How many maximum base registers we can have in a program?

25






Explain how to produce soc7 abend?

22


what is need of start 0? In steed of

53


What is house keeping in assembler?

20


What is icm instruction?

22


Explain how to access vsam file?

27


explain icm instruction?

59


What does the following code do? Ap wkur,=p5 where wkur is a label?

26


In the house keeping section of an MVS assembly language program, like the one below STM R14,R12,12(R13) BASR R12,R0 USING *,R12,R11 LA R11,2048 LA R11,2048(R11,R12) .... .... 1. What if BASR R12,R0 IS NOT PRECEDE USING *,R12,R11? 2. USING (base address), REGISTER does USING directive says assembler to treat particular Register as a base register with the mentioned base address..in the above case * i.e current location counter..well if that is the case why we need BASR R12,R0 ? 3. What if I write like STM R14,R12,12(R13) BASR R12,R0 LA R11,2048 LA R11,2048(R11,R12) USING *,R12,R11 there is no address resolution being calculated in both LA statements so is it a right way to set Base register?..will there be any issues with Domain regarding R11 and R12?

883


How to pass the parameters from jcl to assembler program?

27


What is need of start 0?

43