How are data passed from jcl parm to assembler program?

57

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

47

Why do we use "drop"?

41

What is need of start 0? In steed of can we use anyother numerics? If we use what will happen?

51

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

38

What is house keeping in assembler?

43

Explain the difference between various read and find statement?

40

What is maximum displacement?

34

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?

907

Explain how to initialize a register to 0000?

47

What is the use of trt instruction?

46

How is data passed from a calling program to an assembler called program?

46

What does "using" do?

37

Explain about maximum displacement?

43

Explain how to access vsam file?

54