To debug your programs at the machine interface (MI) level, you can specify an MI object definition vector (ODV) number for the PGMVAR parameter of a command and MI instruction numbers for the STMT parameter of a command. For a breakpoint, the system stops at the MI instruction number just as it would at an HLL statement number. You must always precede the ODV or MI instruction number with a slash (/) and enclose it in apostrophes (for example, '/1A') to signal to the system that you are debugging at the MI level.
The ODV and MI instruction numbers can be obtained from the IRP listing produced by most high-level language compilers. Use the *LIST value of the GENOPT parameter to produce the IRP listing at program creation time.
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