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

DISPLAY
DISPLAY
Purpose
Usage Notes
Use the DISPLAY commands described in the following sections to see data from
the following machine components, both real and virtual:
v The contents of first-level storage (the real storage of the processor)
v The contents of second-level storage (the storage that appears real to the
operating system running in your virtual machine)
v The contents of third-level storage (the storage that appears virtual to the
operating system running in your virtual machine)
v The old and new PSWs, and interrupt information for the following interrupts:
SVC
I/O
PROGRAM
EXTERNAL
MACHINE CHECK
v Storage keys
v Linkage stack
v The contents of these registers:
Access
Control
Floating-point
Floating-point control
General purpose
Prefix
Crypto domain index
v Subchannel information blocks (SCHIBS)
v The current program status word (PSW)
v The register content, activity count, and section size for the Vector Facility:
Vector registers (VR)
Vector register pair(s) (VP)
Vector status register (VSR)
Vector mask register (VMR)
Vector activity count (VAC)
Vector section size (VSS)
(General for DISPLAY)
282 z/VM: CP Commands and Utilities Reference
1. Using a single command, you can display the contents of multiple storage
locations, registers, and control words.
Follow these rules to execute the command properly:
a. Do not put blanks between operands that relate to a single DISPLAY
request, except for PSW and SCHIB, which require at least one blank
between the first and second operands. For example, if you want to display
hexadecimal location 40, enter display H40.
b. Separate each set of display requests from others by at least one blank. For
example, if you want to display hexadecimal location 40 and the contents of
register 5, enter display H40 G5.
2. The defaults for the following DISPLAY operands are:
Operand
Default Before Rounding
G 0-end
G- 0-end