What is base register?

Answer Posted / divya

base register is used to assign a relative address to all
instructions and storage areas. By adding the address in
the base register to the displacement of the instruction,
we can find the absolute address of the instruction.

Is This Answer Correct ?    53 Yes 22 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain about house keeping in assembler?

634


What will happen if we drop the base register in the program which contains only one basereg?

575


Ap wkur,=p5 where wkur is a label?

667


Explain the difference between various read and find statement?

619


How do you round the addition or subtraction of two numbers in assembler?

602






How are data passed from jcl parm to assembler program?

581


What does the following code do? Ap wkur,=p5 where wkur is a label?

615


Explain how to pass instream data in sysin with assembler?

644


Explain how to produce soc7 abend?

639


explain about maximum displacement and how to cross this limit?

697


Why do we use "drop"?

564


What does "using" do?

590


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?

1529


how to initialize a register to 0000?

665


What is icm instruction?

639