Horizontal scroll, Display mode set, Horizontal – IBM 32x User Manual
Page 44: Scroll, A-12, Display, Mode
Ps
Mode
6
(X'36')
5x7
dots,
4
rows
(default)
7
(X'37')
5x7
dots,
5
rows
8
(X'38')
16x16
dots,
2
rows
Horizontal
scroll
1B
5C
3F
4C
48
Pm
3B
Pl
3B
Pt
3B
Pn
3B
Pd...Pd
Purpose:
This
command
initiates
horizontal
scrolling.
The
control
bytes
embedded
in
the
command
sequence
(represented
by
Pm,
Pl,
Pt,
and
Pn
in
the
preceding
command
format),
change
the
scrolling
characteristics.
Pd...Pd
represents
the
data
bytes.
Pm
6
(X'36'):
5x7
dots,
4
rows
7
(X'37'):
5x7
dots,
5
rows
8
(X'38'):
16x16
dots,
2
rows
Pl
1
∼
4
(X'31'
∼
X'34'):
Pm=6
1
∼
5
(X'31'
∼
X'35'):
Pm=7
1,
2
(X'31',
X'32'):
Pm=8
Pt
1
(X'31'):
1
line/10
ms
1
(X'32'):
1
line/20
ms
Pn
The
number
of
data
bytes
(1
for
half-size
letter,
2
for
full-size
letter,
maximum
is
128
(X'80').
Pd...Pd
The
data
characters.
The
following
list
explains
how
the
horizontal
scroll
command
operates:
v
When
a
character
is
displayed
on
the
line
selected
for
scroll
mode,
all
displaying
characters
and
the
display
mode
set
command
are
erased.
v
A
character
scrolls
by
closed
loop
until
the
cancel
command
is
selected.
In
this
case,
the
same
message
is
scrolled
repeatedly
with
no
space.
v
A
screen
scrolls
from
right
to
left,
dot
by
dot.
v
The
scrolled
display
range
is
defined
by
the
screen
mode
setting.
v
The
command
is
canceled
when
Pn
=
X'00'.
After
it
is
canceled,
displayed
characters
are
cleared,
and
the
write-in
position
moves
to
the
most
significant
digit
of
the
row.
v
The
command
can
be
started
only
on
a
single
line.
v
A
character’s
display
mode
set
command
(reverse,
blinking,
and
so
on)
can
be
added
with
the
display
data
frame.
If
the
command
is
written
two
or
more
times
in
one
scroll
data
frame,
only
the
first
command
is
valid;
others
are
ignored.
v
When
message
data
is
changed,
you
must
reissue
this
command.
While
scrolling,
the
user
definable
font
set
command
is
not
available.
Display
mode
set
1B
5B
Ps
6D
Purpose:
This
command
sets
the
display
mode
characteristics.
The
control
byte
embedded
in
the
command
sequence
(represented
by
Ps)
sets
the
mode.
Input/output
device
commands
11-9-2005
A-12
SurePOS
Installation
and
Service