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

HCL, IBM, Wipro,

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,

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

CSC, HCL, IBM,

What is base register?

IBM, Infosys,

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,

How do you initialize a register to 0000?

HCL,

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

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

Why do we have multiple base registers in certain programs?

IBM,

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

IBM, Tech Mahindra,

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

Tech Mahindra,

How we can retrieve the instream data in SYSIN ?

Tech Mahindra,

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

IBM,

about ICM instruction.

EDS,

about maximum displacement and how to cross this limit.

EDS,