Terminal Control
The
escape sequences for
enabling
and
disabling
the
keyboard
are
as
follows:
ENABLE:
Ec
b
DISABLE: Ec c
Once disabled,
the
keyboard
remains
disabled
until
explicitly
enabled,
until
a soft
or
hard
reset
is performed,
or
until
the
power is
turned
off.
Soft Reset
A soft
reset
does
the
following:
1.
Rings
the
terminal's
bell.
2.
Halts
any
device operations
currently
in
progress.
3.
Enables
the
keyboard (if disabled).
4.
Clears
any
existing
error
conditions
and
removes
the
error
message display (if
present)
from
the
bottom
of
the
screen.
5. Disables Display
Functions
mode (if enabled).
6.
Halts
any
datacomm
transfers
currently
in
progress, clears
the
datacomm
buffers.
7.
Resets
the
integral
printer,
if
present.
8. Cancels
any
pending
status
requests.
The
data
on
the
screen, all
terminal
operating
modes (except Display
Functions
mode),
and
all active configuration
parameters
are
unchanged.
From
the
keyboard, you perform a soft
reset
by pressing
the
_ key.
From
a
program
executing
in
a
host
computer,You perform a soft
reset
using
the
following
escape sequence:
Ec 9
Note
that
soft
reset
affects only
the
terminal personality in which
it
is executed.
The
alternate
personality is not affected. Also, an
Ec
9,
when
entered
from
the
keyboard while in IBM mode,
will
result
in
an
error.
2-18