Assembler Interview Questions
Questions Answers Views Company eMail

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

HCL, IBM, Wipro,

7 30887

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 12720

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

CSC, HCL, IBM,

6 12913

What is base register?

IBM, Infosys,

23 86799

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 18546

How do you initialize a register to 0000?

HCL,

10 18225

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

4 9261

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

5 9251

Why do we have multiple base registers in certain programs?

IBM,

4 12192

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

IBM, Tech Mahindra,

4 8956

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

Tech Mahindra,

4 13857

How we can retrieve the instream data in SYSIN ?

Tech Mahindra,

2 7347

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

IBM,

8 10371

about ICM instruction.

EDS,

4 15646

about maximum displacement and how to cross this limit.

EDS,

2 7254


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Un-Answered Questions { Assembler }

Explain the difference between various read and find statement and which one should be used when for better adabas performance?

575


How are data passed from jcl parm to assembler program?

574


Explain how to pass instream data in sysin with assembler?

636


how to initialize a register to 0000?

659


What is maximum displacement?

616






how to pass the parameters from jcl to assembler pgm?

651


How to pass the parameters from jcl to assembler program?

569


Explain about maximum displacement?

598


Explain about house keeping in assembler?

630


what is need of start 0? In steed of

669


What is need of start 0? In steed of can we use anyother numerics? If we use what will happen?

633


What is icm instruction?

635


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?

1521


how to retrieve the instream data in sysin?

672


What is need of start 0?

647