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

U displays the contents of storage in character form. Storage is displayed starting
at the address specified as an EBCDIC string, or as an ASCII string if the X
option is specified. The specified address range is not boundary-aligned.
The storage key is displayed on the first line, as well as at every page
boundary.
M displays the contents of storage in hexadecimal and character form. A header is
displayed as the first line, and at every page boundary and contains the
high-order 32 bits of the 64-bit address along with the storage key. Storage is
displayed in word segments. An address range is displayed starting at the X'10'
byte boundary in which the specified address resides. X'10' bytes of storage are
displayed per line. The hexadecimal display is followed by the storage as an
EBCDIC string, or as an ASCII string if the X option is specified.
If you do not specify any of the options T, M, K, S, I, N, and U, the contents of
storage are displayed in hexadecimal word segments.
0
hexloc1
specifies the starting storage location that is to be displayed. The value hexloc1
may be one to sixteen hexadecimal digits; leading zeros are optional. The
default is zero.
If neither the BASE or INDEX operand is used, hexloc1 is the address of the
first location to be displayed. This address is treated as a 31-bit address,
regardless of the addressing mode of the virtual CPU.
If either the BASE or the INDEX operand is used, hexloc1 is a displacement
rather than an address. The first location to be displayed is specified by the
sum of hexloc1 and the contents of the registers specified with the BASE and/or
INDEX operands. If general register 0 is specified in the BASE or INDEX
operand, it is always treated as containing zero when this sum is being formed.
The sum is treated as a 24-bit or 31-bit address according to the addressing
mode of the virtual CPU.
Storage locations and the minimum amount displayed are rounded according to
the following conventions (in hexadecimal):
Option Start Minimum Length
T 10 10
M 10 10
K 7FF 7FF
S 1 1
I 2 2 - 6 depending on the instruction
N 4 4
U 1 1
% indicates 31-bit address indirection. Indirection means that the contents of the
specified address are used instead of the address itself. In this case, the 31 bits
at the specified address (the high-order bit is turned off) are used as the new
address for the Display command.
& indicates 64-bit address indirection. Indirection means that the contents of the
specified address are used instead of the address itself. In this case, the 64 bits
at the specified address are used as the new address for the Display command.
: END
DISPLAY Guest Storage (ESA/XC)
Chapter 2. CP Commands 291