Technical information
Table 1-1 (Cant.): Console I/O Mode Control Characters
Character
Action
Echoes <CR><LF>, followed by
the
current
command line.
Can
be
used
to
improve
the
readability
of
a command line
that
has
been
heavily edited.
Stops
output
to
the
console
terminal
until
you
enter
Ictrllol.
Not
echoed.
Echoes
AU<CR>.
Entered,
but
otherwise ignored
if
typed
on
an
empty
line.
The
console accepts Console I/O mode commands
up
to
80
characters
long.
Longer commands produce
error
messages.
The
character
count does
not
include
rubouts,
rubbed-out
characters,
or
the
<CR>
at
the
end
of
the
command.
Two
or
more
consecutive spaces
and
tabs
are
treated
as
a single space.
Leading
and
trailing
spaces
and
tabs
are
ignored. You
can
place command
qualifiers
after
the
command keyword
or
after
any
symbol
or
number
in
the
command.
All
numbers
(addresses,
data,
counts)
are
hexadecimal,
but
symbolic
register
names
contain
decimal
register
numbers.
The
hexadecimal digits
are
0
through
9
and
A
through
F.
You
can
use
uppercase
and
lowercase
letters
in
hexadecimal
numbers
(A
through
F)
and
commands.
The
following symbols
are
qualifier
and
argument
conventions:
[]
=
an
optional qualifier
or
argument
{}
= a
required
qualifier
or
argument
1.4.2 Console 1/0 Mode Commands
Table
1-2
lists
and
describes
the
Console I/O mode commands. You
can
display
the
list
of
commands
by
typing
HELP
at
the
console
prompt
(»».
For
a complete
explanation
of how to use
the
commands, along
with
information
on
qualifiers
and
arguments,
refer
to
the
KA670 CPU Technical
Manual
(EK-KA670-TM).
1-6
VAX
4000 Model 300 Technical Information