• 16 byte qroups, aliqned on 16 byte boundaries, hexadeGimal format, printel four fullwords plus EBCDIC translation per line.
For the first format, enter the DISPLAY command as:
you receive the response: 001024 xxxxxxxx xxxxxxxx xxxxxxxx
For the seGond format, enter the command as: display t1026-102c ana the response is:
(E BCDI C trans.) 001020 xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx * •••••••••••••••• * You can also specify the area of storage to be displayed by entering
a hexalecimal byte count such as:
display 1024.12 The response displays 20 bytes as follows: 001024 xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx 001034 xxxxxxxx BYTE ALIGNMENT ON TERMINAL OUTPUT The previous responses illustrate the byte alignment that takes place in
each of the two display formats.
If the first location to be displayed is not on the appropriate 4 or 10 byte boanaary, it is rounded down to the next lower boundary that
applies. If the last location to be displayed does not fall at the end of the appropriate 4 or 16 hyte group, it is rounded up to the end of that
qroup.
If you enter:
display k1024-3200 the keys that are assigned to each 2K segment of the specified
storaqe area are displayed. contiquous 2K segment with identical
storaqe keys are combined; for example, the response could have been: 001000 T8 OQ27FF KFY=FO 002800 TO 003800 KEY=EO To lisplay all storaqe keys, enter:
display k Section 3. CP Command Usage 29

If your virtual machine is in extended control mode (ECMJDE), you can interrogate anv of the control reqisters:
display X1 4 A and receive the response:
EeR 1
ECR 4
ECR 10 xxxxxxxx
xxxxxxxx
xxxxxxxx However, the same command entered while your virtual machine is not
in exten1e1 control mode results in the response:
ECR 0 0 Ee: R 0 xxxxxxxx
xxxxxxxx
xxxxxxxx
As each operand in the command line is processed, VM/370 determines
that ECMODE is OFF and replaces any reference to a control register with
ECF 0, the onlv control reqister available in basic control (BC) mode.
PRINTER OUTPUT With the DUMP command you can dump the contents of all registers, the °SW and the storage keys, along with any specified area of virtual
storaqe, to the virtual machine's spooled printer. The printer format for storage locations is 8 fullvords per line plus the EBCDIC
+ranslation on the riqht.
To print only the registers, the PSW, and the storage keys, you need
only enter: dllmo 0 To also print an area of virtual storage, you can specify the
beginninq and ending hexadecimal locations: dLlmp 1064-10ff TOU can also specify the beginning location and the number of bytes
to be dumpe1; both values are entered in hexadecimal:
dump 1064.9b If you are printinq a series of dumps, you can
fncludinq its identification on the DUMP command
asterisk:
dump 1000-2000 * dump no. 1
identify each one by
line, following an
To oriat the dump data on the real printer you must first close the
virtual printer. Issue the command:
close printer and the dump 1ata spool file is placed on an appropriate system printer
queu e.
In addition, if vour installation has the VM/IPCS Extension program
product ilstallpd, you can use the VMDUMP command that dumps storage for
quest virtual machines. VMDUMP provides the VM/IPCS Extension with 30 IBM VM/370 CP Command Peference for General Users