Figure 1 and Figure 2 describe the layout of central and virtual storage, respectively. For a description of the prefixed storage area (PSA), see the PSA control block section in z/OS® MVS™ Data Areas in http://www.ibm.com/systems/z/os/zos/bkserv/.
Figure 1. Virtual
storage layout for single address space
Figure 2. Mapping
of V=R regions into central storage