Macro Differences

The diagram opposite illustrates the comments on the previous page.

The additional points to note are that:

Each of the examples relates to a single address space, there is no cross address space communication inferred.
These are executing below the 2GB boundary within that address space.

The stand-alone CALL example shows static linkage whereas the connection from PGMB to PGMZ via the LOAD + CALL combination is dynamic linkage.

Macro differences