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?
- 0 Answers
- 1529 Views
- I also Faced
- E-Mail Answers
No Answer is Posted For this Question
Be the First to Post Answer
Write the fetch cycle and execute cycle for following instructions:JMPNZ (jump to the given address if the accumulator not equal to zero) RET(return from a subroutine) ADB (add the contents of register B to the accumulator and save result in the accumulator).
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.
What is maximum displacement?
What will happen if we drop the base register in the program which contains only one basereg?
how to find the dump
what is need of start 0? In steed of
how to pass the parameters from jcl to assembler pgm?
how to access VSAm file
How are data passed from jcl parm to assembler program?
Explain how to produce soc7 abend?
Ap wkur,=p5 where wkur is a label?
how to retrieve the instream data in sysin?
COBOL 
