HP 3000 Manuals

Switch Programming User's Guide

Mixed-mode Summary and Example 

Figure 1.12 and Figure 1.13 summarize mixed-mode procedure calling as
provided by Switch:


          Figure 1.12.  CM--> NM Switch Summary


          Figure 1.13.  NM--> CM Switch Summary

The following series of figures illustrates the migration of an existing
COBOL II/V application to Native Mode.  You can simply do a STORE/RESTORE
to move the application.  For even greater performance in Native Mode,
you can recompile the source, taking advantage of the NM compilers.
However, this application calls an SPL procedure that cannot be migrated
to Native Mode.  Therefore, you must use Switch to access this SPL
procedure (if you do not want to rewrite it in an NM high-level
language).


NOTE  In the following figures, shading means that a module is no longer
      needed.



          Figure 1.14.  Before Migration


          Figure 1.15.  Migrating High-level Code to Native Mode


          Figure 1.16.  Using Switch to Access SPL Procedure

MPE/iX 5.0 Documentation