How do you initialize a register to 0000?
- 10 Answers
- 18251 Views
- HCL, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / ajay kuriyal
from my point of view the best way is to do boolean
XR RX,RX
Now RX will have '0000'
| Is This Answer Correct ? | 25 Yes | 2 No |
Answer / pazhanivel seethapathy
The standard ways to intialize registers are as follows
1. SR Rx,Rx or
2. LA Rx,0 or
3. XR Rx,Rx
| Is This Answer Correct ? | 10 Yes | 1 No |
Answer / sunny
XR Rx,Rx
This is the best way and most efficient way of initializing
the register values or Label values to '0'.
Its because the time required to execute a Logical
Instruction is always less than the Arithmetic Instructions.
e.g SR Rx,Rx consumes more execution time than XR Rx,Rx.
So XR Rx,Rx is a better way to do obtain our target.
| Is This Answer Correct ? | 7 Yes | 0 No |
Answer / sourav
The best way to initialize a register is
SR Rx,Rx
instruction.
There are other ways as well, few of them are already
posted.
| Is This Answer Correct ? | 11 Yes | 5 No |
Answer / anonym
1. Register i-memory (fastest)
LA x,0
SRL x,64
2. register register
XGR/XR x,x
SGR/SR x,x
3. register memory (not very clever)
L x,=A(0)
LG x,=AD(0)
| Is This Answer Correct ? | 4 Yes | 2 No |
Answer / sam
I'm assuming something like
R0 EQU 0
R1 EQU 1
:
Rx EQU x
is coded somewhere in the program
| Is This Answer Correct ? | 2 Yes | 26 No |
How to initialize 20,000 bytes in the Assembler..
Ap wkur,=p5 where wkur is a label?
how to pass the parameters from jcl to assembler pgm?
How we can Pass the parameters from JCL to assembler Pgm?
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
What is icm instruction?
how to retrieve the instream data in sysin?
HOW MANY MAXIMUM BASE REGISTERS WE CAN HAVE IN A PROGRAM AND ALSO HOW MANY MAXIMUM BASE REGISTERS WE CAN HAVE IN A SINGLE PROGRAM.
Explain about base register?
Why can only 256 bytes be moved from one address to another in a MVC?
How is data passed from a calling program to an assembler called program?
Why do we have multiple base registers in certain programs?
COBOL 
