Explain how to access vsam file?
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Why do we use "drop"? What does "using" do?
about ICM instruction.
What is maximum displacement?
What is base register?
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 icm instruction?
explain about maximum displacement and how to cross this limit?
Why can only 256 bytes be moved from one address to another in a MVC?
How to pass the parameters from jcl to assembler program?
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?
How are data passed from jcl parm to assembler program?
Can we use an equated value as operand for an MVC instruction? Reason for the same
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