How are data passed from JCL parm to assembler program. And how is data passed from a calling program to an assembler called program.
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 13,116 12506
Why do we use "drop"? What does "using" do?4 6906
What is the difference in data type "X" and "P"?5 6675
Why do we have multiple base registers in certain programs?4 8485
WHAT WILL HAPPEN IF WE DROP THE BASE REGISTER IN THE PGM WHICH CONTAINS ONLY ONE BASEREG?4 6434
Can we use an equated value as operand for an MVC instruction? Reason for the same8 6497
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?