Chapter 21. Mainframe Reference

This chapter provides technical details about the mainframe, beyond the short introduction given in Chapter 2, “Introducing the Mainframe.” This chapter contains:

  • A discussion of the mainframe architecture

  • An overview of the (architecture-dependent) mainframe register set

  • An introduction to the program status word (PSW)

  • An introduction to the Integrated Facility for Linux (IFL)

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