DATADDR
is the virtual storage address
of
the first byte
of
data
to
be displayed.
FLAGS
are standard
CCW
flags.
The
suppress-incorrect-Iength
indicator, bit 34, must
be
set
to
a value
of
one. Set
other
bits as needed.
CTL
is a control byte defined as follows:
If
the
high-order bit (bit
0)
is on,
CP
displays more
status before erasing the display station screen and
displaying the new data.
• Bits 2-7 identify
the
line
on
the display screen where
the
display is
to
start. A value
of
0 (B'xxOO
0000')
corresponds
to
the
first
or
top line, a value
of
1
(B'xxOO 0001 ') corresponds to
the
second line and
so forth.
If
the
control byte contains the value
X'FF',
CP
clears the
output
area
on
the
display screen.
No
new
data
is displayed.
CCWs
may
be
command chained
to
combine several
operations
in
one
DIAGNOSE.
If
the
control byte
contains a value
of
X'FE',
CP
will:
COUNT
Erase
the
entire screen.
Rewrite
the
attribute bytes for
the
CP
screen
format.
Reset
the
cursor
to
the beginning
of
the
input
area.
specifies the
number
of
bytes of data
to
be
displayed.
The maximum
that
can
be
specified for this command
code is
2032
bytes.
To
provide attribute characters for the data, place
the
attribute character
in
the
data
stream immediately following
a
3270
start-field order.
The
start-field order, a one-byte
Appendix
A.
CP/CMS
Interface A-21
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