Assembler Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Assembler Interview Questions

Questions Answers Views Company eMail

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

HCL, IBM, Wipro,

7 34613

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 14745

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

CSC, HCL, IBM,

6 16050

What is base register?

IBM, Infosys,

23 95176

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 21855

How do you initialize a register to 0000?

HCL,

10 21877

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

4 11288

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

5 11384

Why do we have multiple base registers in certain programs?

IBM,

4 13924

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

IBM, Tech Mahindra,

4 10845

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

Tech Mahindra,

4 16153

How we can retrieve the instream data in SYSIN ?

Tech Mahindra,

2 8914

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

IBM,

8 13730

about ICM instruction.

EDS,

4 18938

about maximum displacement and how to cross this limit.

EDS,

2 8672

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Un-Answered Questions { Assembler }

Explain how to pass instream data in sysin with assembler?

1144

Why do we use "drop"?

1043

explain icm instruction?

1138

What is house keeping in assembler?

1070

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?

2033

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

1124

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

1101

Explain how to initialize a register to 0000?

1048

What will happen if we drop the base register in the program which contains only one basereg?

1022

Explain the difference between various read and find statement?

1120

how to pass the parameters from jcl to assembler pgm?

1158

What does "using" do?

1113

Explain how to access vsam file?

1138

What is maximum displacement?

1260

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

1065

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