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 34354

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 14599

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

CSC, HCL, IBM,

6 15806

What is base register?

IBM, Infosys,

23 94540

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 21630

How do you initialize a register to 0000?

HCL,

10 21638

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

4 11152

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

5 11247

Why do we have multiple base registers in certain programs?

IBM,

4 13797

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

IBM, Tech Mahindra,

4 10707

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

Tech Mahindra,

4 15990

How we can retrieve the instream data in SYSIN ?

Tech Mahindra,

2 8818

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

IBM,

8 13449

about ICM instruction.

EDS,

4 18753

about maximum displacement and how to cross this limit.

EDS,

2 8582

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Un-Answered Questions { Assembler }

Explain how to produce soc7 abend?

1072

explain about maximum displacement and how to cross this limit?

1149

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?

1980

Explain the difference in data type "x" and "p"?

1034

What is icm instruction?

1062

What is maximum displacement?

1184

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

1109

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

1032

Explain about maximum displacement?

1061

how to initialize a register to 0000?

1161

Explain about house keeping in assembler?

1045

Explain about base register?

1061

explain icm instruction?

1085

Ap wkur,=p5 where wkur is a label?

1152

Explain how to pass instream data in sysin with assembler?

1093

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