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

Answer Posted / pazhanivel seethapathy

The length of MVC instruction is 1 Byte which is X'FF'. it
can have the range between 0 - 255 so totally 256 bytes of
data can be used.

Is This Answer Correct ?    2 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is house keeping in assembler?

593


How many maximum base registers we can have in a single program?

639


how to initialize a register to 0000?

667


how to pass the parameters from jcl to assembler pgm?

658


How to pass the parameters from jcl to assembler program?

576






explain icm instruction?

659


what is need of start 0? In steed of

676


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?

1531


Explain about maximum displacement?

609


Why do we use "drop"?

566


explain about maximum displacement and how to cross this limit?

701


Explain the difference in data type "x" and "p"?

595


Explain how to access vsam file?

611


What does "using" do?

594


Explain how to produce soc7 abend?

643