DCP Use the DCP com.and to display the contents of real storage locations at
the terminal. In attached processor system configurations, the values
of PSA for the main and the attached processor can also be disclosed.
If an invalid operand is entered, the DCP comaand terminates.
However, any previous valid operands are processed before teraination
occurs. The format of the DCP command is: DCP KLhexloc1 NLhexlocl KThexlocl NThexlocl Khexloc1 Mhexlocl Lhexloc1
Thexloc1 hexlocl o r , r , I KLhexloc 11 1 NLhexloc 11 1 MThexloc 11 I NThexloc 11 r , 1 Khexloc 11 }:
hexloc2 1 1 Nhexloc 11 1 1 Lhexloc 11 L ..J I Thexloc 11 1 hexloc 11 r n r ,
.J {. Jlbytecount I I I I L L ..J
specifies the first storage location to be If . hexloc1 is the only operand, it specifies the only storage
location to be displayed. If hexloc1 is not specified, L or T
must be specified, and the display begins with storage
location O. If hexloc1 is specified and L or T is not
specified, the display is in hexadeciaal. T specifies that an
EBCDIC translation is to be included with the hexadeciaal
display. L specifies that the display is to be in heiadeciaal only. If hexloc1 is followed by a period and .1$ not on a
fullword boundary, it is rounded down ·to the next lower
fullword.
In attached processor systems, ft specifies that the addresses
are interpreted as though the main processor generated thea.
Thus, KO refers to location 0 of the PSI of the aain processor. The N prefix specifies that the addresses be
interpreted as though the attached processor generated thea.
The absence of K or N results in the address being interpreted
as an absolute address. N is valid only if the attached
processor is operational. K is valid if the systea has been
generated for attached processors. The prefix K or I is not
meaningful for uniprocessor systeas. Section 3. CP Commands 59

r , Ihexloc21 I END I L specifies that a range of locations is to be displayed. To
display the contents of one or more storage locations by specified storage address location the or ":" aust be used. The hexloc2 operand must be 1-to 6-hexadecimal digits;
leading zeros need not be specified. In addition, The hexloc2
operand must be equal to hexloc1 and it should not exceed the
size of real storage. If ERD is specified, real storage from hexloc1 through the end of real storage is displayed. If
hexloc2 is not specified, END is the default. Note that this
occurs only if a dash (-) or a colon (:) follows the first
operand. r , {.}Ibytecountl I END I L
is a hexadecimal integer designating the number of bytes of
real storage (starting with the byte at hexloc1) to be
displayed on the terminal. The sua of hexloc1 and the
bytecount must be an address that does not exceed the size of
real storage. If this address is not on a fullword boundary,
it is rounded up to the next higher fullword. The bytecount
operand must be a value of 1 or greater and may not exceed six
hexadecimal digits.
1. Normally, a user defines or should define the beginning and ending
locations of .storage in the following manner: dcp Lhexloc1-hexloc2
dcp Thexloc1-hexloc2
dcp hexloc1:hexloc2
dcp hexloc1.bytecount
dcp hexloc1:hexloc2 hexloc1.bytecount
Blanks must not be entered between the limit or range symbols (: or
- or .) or any of the operands except for the blank or blanks
between the co.mand name and the first operand. 1 blank is also
required between each set of operands when more than one set of
operands are entered on one command line.
However, if a blank immediately follows the designated type
character (T or L), DCP displays all of real storage. If the next
operand is either a colon (:), a dash (-), or a period (.) followed by a blank character, the system again defaults to a display of all
storage locations as this operand assumes a second set of operands.
2. Blanks separate operands or sets of operands if more than one
operand is entered on the same co •• and line. Blanks should not
occur on the right or left of range or length unless it is
intended to take the default value of the missing operand defined
by the blank. 60 YM/370 Operator's Guide