System Debug provides a family of low-level assembly language
debugging tools for MPE XL:
Standalone Analysis Tool (SAT)
A certain level of knowledge is required to utilize System Debug.
Specifically, familiarity with assembly code, procedure calling conventions,
parameter passing conventions, and HP 3000 and HP Precision
Architecture is assumed.
If you do not require the features offered by an assembly language debugger,
please be aware that two
excellent source-level symbolic debuggers are available from
Hewlett-Packard: Symbolic Debug/XL and Toolset/XL.