If
you have selected
the
For
m a t A : option (key
f8),
you MUST
then
remember to
remove your system disc from Drive
A,
and
instead
insert
the
disc to be forma tted.
Don't forget -
NEVER RISK OVERWRITING YOUR MASTER
CP/M
SYSTEM
DISCS.
Now
that
we
have a formatted blank disc (or two),
we
can
start
to manipulate BASIC
programs to
and
from disc.
Saving a Program
in
Memory
onto
Disc
Having typed a program into
the
computer's memory, save
it
onto disc by typing in:
s a v e
"f;
Le
n a me"
[RETURN]
Note
that
the
naming
of
the
program is obligatory.
A filename on disc consists of 2
parts
(fields). The first
part
is obligatory and can
contain up to 8 characters. Letters
and
numbers may be used
but
NO spaces or
punctuation marks. This first field usually contains
the
name of
the
program.
The second field-is optional. You can use up to 3 characters,
but
again no spaces or
punctuation. The 2 fields
are
separated by a
dot.
If
you
do
not specify a second field,
the
system will automatically label
it
with a token
of
its
own, such as .
BA
S for BASIC files or • BIN for
binary
(machine code) files.
As
an
example of saving to disc, write a short program into
the
memory,
insert
a
formatted disc,
then
type in:
-
save"
e x
amp
Le"
[RETURNr
After a few seconds,
the
prompt Rea d y will appear on
the
screen, and
the
program
will
have
been saved onto disc. (If not, check any error message on
the
screen to
establish
whether
you
either
forgot to
insert
your disc into
the
correct drive, forgot to
close
the
write protect hole, or mistyped
the
command.)
Catalog
After saving
the
above program, type in:
cat
[RETURN]
Foundation Course Chapter 1 Page
43
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