Why can only 256 bytes be moved from one address to another
in a MVC?
- 6 Answers
- 12907 Views
- CSC, HCL, IBM, I also Faced
- E-Mail Answers
Answer Posted / vikram
Lenght feild is 8 bits so the data is stored in binary
format so if we have all 8 bits set to 1 then the length
will be 128+64+32+16+8+4+2+1 = 255.or
2^7+ 2^6+2^5...2^0 = 255.
so the lenght is 256 .....
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
Why do we use "drop"?
What is the use of trt instruction?
how do you round the addition or subtraction of two numbers in assembler? what does the following code do? change process tool(code changes from dev to prd) the changes made to your code should be effected in live. How the process takes place. That is how can you move the code changes from development to production?
What is house keeping in assembler?
how to pass the parameters from jcl to assembler pgm?
What is need of start 0?
How do you round the addition or subtraction of two numbers in assembler?
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 is data passed from a calling program to an assembler called program?
how to initialize a register to 0000?
What is need of start 0? In steed of can we use anyother numerics? If we use what will happen?
Explain the difference in data type "x" and "p"?
What does "using" do?
What will happen if we drop the base register in the program which contains only one basereg?
explain icm instruction?
