Why can only 256 bytes be moved from one address to another
in a MVC?
- 6 Answers
- 12951 Views
- CSC, HCL, IBM, I also Faced
- E-Mail Answers
Answer Posted / mike m
THE LENGTH CODE FIELD IS 1 BYTE IN LENGTH.
THE LARGEST VALUE YOU MAY SPECIFY IN A 1 BYTE FIELD IS X'FF'
X'FF' = 255 DECIMAL
THE LEN. IN THE OBJECT CODE FIELD WILL BE 1 LESS THAN
ACTUAL LEN.
| Is This Answer Correct ? | 20 Yes | 1 No |
Post New Answer View All Answers
What is maximum displacement?
explain icm instruction?
what is need of start 0? In steed of
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?
explain about maximum displacement and how to cross this limit?
Explain how to pass instream data in sysin with assembler?
Explain the difference in data type "x" and "p"?
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 does "using" do?
What is icm instruction?
how to retrieve the instream data in sysin?
What will happen if we drop the base register in the program which contains only one basereg?
Why do we use "drop"?
What is the use of trt instruction?
Explain how to initialize a register to 0000?
