IBM 03R5900 Service Guide - Page 38

Carriage, return, <CR&gt, <SI&gt, Display, position, <DLE&gt, Normal-display, control, <

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Input/output device commands 11-9-2005 line is cleared, and the cursor position is unchanged. This command always stops the scrolling alphanumeric message. Carriage return (0D) 0D Purpose: Causes the cursor to move to the leftmost position of the current line. This command stops the scrolling alphanumeric message if the cursor position is on the top line when this command is sent. Test (0F) 0F Purpose: Causes the first 40 characters in the currently selected character set to be displayed once. At the end of the test, a test pattern is written that turns all pixels ON. At the end of the test, the display is cleared and is reset to the power-on state as described at "Reset (1F) " on page A-7. Display position (10) 10 nn Purpose: Changes the cursor position. The byte that follows the command byte indicates the character position where the next data-string write operation is to start. Any values greater than X'27' are ignored and the cursor position remains unchanged. This command stops the scrolling alphanumeric message if the cursor position is on the top line when this command is sent. X'00' X'13' X'14' X'27' Top left Top right Bottom left Bottom right Normal-display control mode (11) 11 Purpose: Sets normal display-control mode (DC1) and permits data to be written to either line. After a character is written, the cursor moves one position to the right. When the display position is at the last position of the top line, the cursor moves to the first position of the bottom line. When the display position is at the last position of the bottom line, the cursor moves to the first position of the top line. The display remains in DC1 mode until a DC2 mode command is issued, a reset command is issued, or power is removed from the display. A-6 SurePOS Installation and Service

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line
is
cleared,
and
the
cursor
position
is
unchanged.
This
command
always
stops
the
scrolling
alphanumeric
message.
Carriage
return
(0D)
<CR>
0D
Purpose:
Causes
the
cursor
to
move
to
the
leftmost
position
of
the
current
line.
This
command
stops
the
scrolling
alphanumeric
message
if
the
cursor
position
is
on
the
top
line
when
this
command
is
sent.
Test
(0F)
<SI>
0F
Purpose:
Causes
the
first
40
characters
in
the
currently
selected
character
set
to
be
displayed
once.
At
the
end
of
the
test,
a
test
pattern
is
written
that
turns
all
pixels
ON.
At
the
end
of
the
test,
the
display
is
cleared
and
is
reset
to
the
power-on
state
as
described
at
“Reset
(1F)
<US>”
on
page
A-7.
Display
position
(10)
<DLE>
10
nn
Purpose:
Changes
the
cursor
position.
The
byte
that
follows
the
command
byte
indicates
the
character
position
where
the
next
data-string
write
operation
is
to
start.
Any
values
greater
than
X'27'
are
ignored
and
the
cursor
position
remains
unchanged.
This
command
stops
the
scrolling
alphanumeric
message
if
the
cursor
position
is
on
the
top
line
when
this
command
is
sent.
X'00'
Top
left
X'13'
Top
right
X'14'
Bottom
left
X'27'
Bottom
right
Normal-display
control
mode
(11)
<DC1>
11
Purpose:
Sets
normal
display-control
mode
(DC1)
and
permits
data
to
be
written
to
either
line.
After
a
character
is
written,
the
cursor
moves
one
position
to
the
right.
When
the
display
position
is
at
the
last
position
of
the
top
line,
the
cursor
moves
to
the
first
position
of
the
bottom
line.
When
the
display
position
is
at
the
last
position
of
the
bottom
line,
the
cursor
moves
to
the
first
position
of
the
top
line.
The
display
remains
in
DC1
mode
until
a
DC2
mode
command
is
issued,
a
reset
command
is
issued,
or
power
is
removed
from
the
display.
Input/output
device
commands
11-9-2005
A-6
SurePOS
Installation
and
Service