z/VM: CP Commands and Utilities Reference - z/VM - IBM

DISPLAY
Messages
can enter the DISPLAY command. Alternatively, you can process the DISPLAY
command directly from TRACE using the TRACE command CMD option. For
more information, see “TRACE: Options” on page 1604.
7. The DISPLAY storage command supports indirect addressing. Indirect
addressing tells the command to use the contents of an address you specified
instead of the address itself. This can help reduce the number of displays you
issue and the tedious tracking of address pointers. You specify indirect
addressing with an & (for 64-bit) or a % (for 31-bit).
The following is an example of double indirection using the % for 31–bit
addressing. First, the storage is shown using the usual DISPLAY without indirect
addressing. Following that is the same storage displayed using indirect
addressing with only one DISPLAY command (and without having to know that
the information you want is at address 3F1AB40). The information displayed is a
LNGBK control block for the system default language using a pointer from the
CP nucleus SYSCM area.
D 3EF1030
R03EF1030 0000524C
D 524C
R0000524C 03F1AB40
D T3F1AB40.80
R03F1AB40 00000000 00000000 00000000 00000000 06 *................*
R03F1AB50 to 03F1AB5F suppressed line(s) same as above ....
R03F1AB60 00390000 00000000 C1D4C5D5 C7000000 *........AMENG...*
R03F1AB70 00000000 03F1A878 00000000 0041E000 *.....1y.........*
R03F1AB80 C8C3D7D4 C5E24040 00000000 00000000 *HCPMES ........*
R03F1AB90 00000000 00000000 00000000 00000000 *................*
R03F1ABA0 to 03F1ABAF suppressed line(s) same as above ....
R03F1ABB0 4CD3D5C7 4C4C4C4C 80000070 00D5D3E3 *