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Commodore 1541-II - How to Prepare a New Diskette

Commodore 1541-II
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Last
is
the
relocate
flag.
It
can
have
one
of
two
values,
0
and
1.
If
the
relocate
flag
is
0
or
omitted,
all
Commodore
computers
that
use
the
1541
automatically
relocate
the
programs
they
load
to
live
in
the
part
of
computer
memory
reserved
for
BASIC
programs.
If
the
relocate
flag
value
is
1,
auto-relocation
is
turned
off,
and
the
program
is
loaded
into
the
exact
part
of
memory
from
which
it
was
originally
saved.
This
feature
allows
machine-language
and
other
special
purpose
programs
to
come
into
the
computer
at
the
correct
location
for
them
to
operate
properly.
At
this
point
in
your
learning,
the
only
thing
you
need
to
know
about
the
relocate
flag
is
how
to
use
it.
Simply
include
the
1
at
the
end
of
the
LOAD
command
if
a
particular
program
doesn't
run
properly
when
loaded
the
usual
way.
After
you
type
in
the
command
and
press
the
RETURN
key,
the
fallowing
will
appear
on
the
screen:
SEARCHING
FOR
"HOW
TO
USE"
LOADING
READY.
When
the
word
READY
and
the
flashing
cursor
reappear
on
the
screen
and
the
green
light
goes
off
on
the
drive,
the
program
named
"HOW
TO
USE"
on
the
Test/Demo
diskette
has
been
loaded
into
the
computer.
To
use
it,
just
type
the
word
RUN
and
press
the
RETURN
key.
The
same Load
command
will
also
allow
you
to
load
other
prepackaged
programs
from
the
Test/Demo
or
other
diskettes.
Merely
substitute
the
exact
program
name
that
you
want
to
use
between
the
quotation
marks
in
the
above
example,
and
that
will
be
the
program
the
computer
will
load
(a
list
of
Test/Demo
programs
is
shown
in
Chapter
3,
in
the
section
entitled
"What
a
Directory
Shows").
Note:
here
and
in
the
remainder
of
the
book,
we
will
assume you
are
in
graphic
mode,
seeing
upper
case
letters
and
graphic
characters
when
you
type.
This
is
the
normal
condition
of
all
Commodore
computers
covered
by
this
manual
when
they
are
first
turned
on.
If
you
now
see
lower-case
letters
when
you
type
without
using
the
SHIFT
key,
you
are
in
text
mode
instead.
Press
the
COMMODORE
key
(Q:),
at
the
lower
left
corner
of
your
keyboard,
together
with a
SHIFT
key
to
switch
to
graphic
mode.
HOW
TO
PREPARE
A
NEW
DISKETTE:
BASIC
2
A
diskette
needs
a
pattern
of
magnetic
grooves
in
order
for
the
drive's
read/write
head
to
find
things
on
it.
This
pattern
is
not
on
your
diskettes
when
you
buy
them,
but
adding
it
to
a
diskette
is
simple
once
you
know
to
do
it.
Here
is
the
procedure:
FORMAT
FOR
THE
DISK
NEW
COMMAND
OPEN
15,device
#,15,"Ndrive
#:diskette
name,id"
CLOSE
15
This
Open
command
will
be
described
more
fully in
Chapters
4
and
5.
For
now,
just
copy
it
as
is,
replacing
only
the
parts
given
in
lower
case.
These
include:
the
device
15

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