Mainframe, MVS and zOS Discussion

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If you look at the pseudo-assembler code produced by the COBOL compiler, you will notice that COBOL has a number of run-time routines that are invoked (the DISPLAY statement has a run-time routine, for example, so every DISPLAY statement will use the system routine). These run-time routines need to...

With COBOL V5, loadmodules are no longer used (instead exclusively Program Objects are produced) but the principle is the same. The compiler does not produce code that is directly executable. Then how do we execute the programs now in JCL? Are we not going to use PGM=pgm in the JCL now? We are stil...

Hi, I know that for preparing a COBOL program before executing using a RUN JCL, we need to compile the program and then link edit it so that we have a load module which can be executed using the JCL. But I have the confusion that if we have only one cobol program which is stand alone, then do we nee...

enrico thanks for your help.

Hi,

In assembler, how can we initialize the register to 0000? Are there some best practices to choose from? Appreicate your help.