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
- 6 Answers
- 18583 Views
- Mind Tree, I also Faced
- E-Mail Answers
Answer Posted / guest
House keeping is used to store the contents of the base
register from one register to another for using that
register.
These are house keeping instructions where contents of the
registers are stored
1. content of the register 15 is stored in the register 12
2. address in reg 12 is mapped to the module type
3. save area is stored in the register 13
| Is This Answer Correct ? | 2 Yes | 3 No |
Post New Answer View All Answers
Explain the difference between various read and find statement and which one should be used when for better adabas performance?
How to pass the parameters from jcl to assembler program?
how to initialize a register to 0000?
What will happen if we drop the base register in the program which contains only one basereg?
how do you round the addition or subtraction of two numbers in assembler? what does the following code do? change process tool(code changes from dev to prd) the changes made to your code should be effected in live. How the process takes place. That is how can you move the code changes from development to production?
how to retrieve the instream data in sysin?
what is need of start 0? In steed of
Explain about maximum displacement?
Why do we use "drop"?
What does "using" do?
Explain about base register?
explain icm instruction?
What is need of start 0? In steed of can we use anyother numerics? If we use what will happen?
Explain how to access vsam file?
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?
