VECTOR 4 USER'S
MANUAL
VECTOR
4 CP/M RESIDENT
COMMANDS
RESIDENT
COMMANDS
What
is a Resident Command?
As you recall
from
the introduction, resident commands
are
an integral
part
of
the
Console
Command
Processor
(CCP).
Resident
commands
are
those
commands
that
reside
permanently,
or
"live"
in
the
CCP. Vector 4
CP/M
provides you with several
resident
commands
which
may
be
interpreted
and
immediately executed
by
the
CCP.
Remember
that
as you
enter
a command,
the
CCP
int~rprets
it
and helps
execute
it.
The CCP communicates with
the
user,
interprets
the
commands
and
helps
in
the execution of
the
commands by making use of
BIOS
and
BDOS.
In
addition,
the
CCP allows you
to
correct
your
mistakes
when
entering
command
lines.
Before
listing
and describing the "resident commands", below
you
will find a list of control keys that
may
be used when editing
(correcting)
the
mistakes you
may
make while entering a command line.
CCP Control Keys
Reminder: the [CTRL]-key sequences
are
executed by holding down the [CTRL]
key while pressing
the
desired
letter
key.
[BACKSPACE] or [DEL] -
deletes
the
last
character(s.)
entered
at
the
terminal. There is no difference in the
function
of
either
control
key.
Both will
perform
the
same task: deleting (erasing) the
last
character(s)
entered
at
the terminal.
[CTRL
X]
-
deletes
(erases)
the
entire
line entered
at
the terminal.
If
you
have made a mistake and
find
it
simpler
to
erase the entire
line
than
to
use the [BACKSPACE], enter [CTRL X].
[CTRL
U]
-
cancels
the
current
line
by
not transmitting
it
to CP/M. [CTRL
U]
does not delete
the
line
as
[CTRL
X]
does, but simply skips
over
the
line
and
goes
on to the next clean line.
When
you press [CTRL
U],
you
will
get
the cursor but not the prompt.
It
is
not
necessary
to
get
the
prompt
in
order
to
enter your
command
again; however, if you
want
the
prompt, you must press [RETURN].
[CnL
E] -
physical
end
of
line;
splits
a long command line for readability.
Carriage is returned
but
line is not sent until a [RETURN] is entered.
[CTRL C] -
there
are
two
functions
that
(CTRL:
C]
performs:
first,
it
restarts
the
system via a
warm
boot (effectively
cancelling
the
program
in progress); second,
it
warm boots for a newly inserted diskette.
Rev. A -
9-01-82 7100-0001
VIn-1
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