EasyManua.ls Logo

Commodore 1541 - Page 15

Commodore 1541
80 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
The
commands
is
optional.
If
not
given,
or
zero,
the
program
is
LOADed
nor
mally,
that
is,
beginning
at
the
start
of
your
available
memory
for
BASIC
programs.
If
the
number
is 1,
the
program
will
be
LOADed
at
exactly
the
same
memory
locations
from
which
it
came.
In
the
case
of
computers
with
different
memory
configurations,
like
VICs
with
5K,
8K,
or
more
memory,
the
start
of
BASIC
memory
is
in
different
places.
The
command/*
0
permits
BASIC
programs
to
LOAD
normally.
CommandW
1
is
used
mainly
for
machine
language,
character
sets,
and
other
memory
dependent
functions.
EXAMPLES
LOAD
"TEST",
8
LOAD
"Program
#
1",
8
LOAD
AS.
J
,
K
LOAD
"Mach
Lang",
8.
1
NOTE:
You
can
use
variables
to
represent
device
numbers,
commands,
and
strings,
as
long
as
you've
previously
defined
them
in
your
program.
DIRECTORY
OF
DISKETTE
The
DATASSETTE™
tape
deck
is
a
sequential
device.
It
can
only
read
from
the
■
beginning
of
the
tape
to
the
end,
without
skipping
around
the
tape
and
without
the
capability
of
going
backward
or
recording
over
old
data.
Your
disk
drive
is
a
random
access
device.
The
read/write
head
of
the
disk
can
go
to
any
spot
on
the
disk
and
access
a
single
block
of
data
which
holds
up
to
256
bytes
of
information.
There
are
a
total
of
683
blocks
on
a
single
diskette.
Fortunately,
you
don't
really
have
to
worry
about
individual
blocks
of
data.
There
is
a
program
in
the
disk
drive
called
the
Disk
Operating
System,
or
the
DOS.
This
program
keeps
track
of
the
blocks
for
you.
It
organizes
them
into
a
Block
Availability
Map.
or
BAM,
and
a
directory.
The
Block
Availability
Map
is
simply
a
checklist
of
all
683
blocks
on
the
disk.
It is
stored
in
the
middle
of
the
diskette,
halfway
between
the
center
hub
and
the
outer
rim.
Every
time
a
program
is
SAVEd
or a
data
Tile
is
CLOSEd,
the
BAM
is
updated
with
the
list
of
blocks
used
up.
The
directory
is
a
list
of
all
programs
and
other
files
stored
on
the
disk.
It
is
physically
located
right
next
to
the
BAM.
There
are
144
entries
available
in
the
direc
tory,
consisting
of
information
like
file
name
and
type,
a
list
of
blocks
used,
and
the
starting
block.
The
directory
is
automatically
updated
every
time
a
program
is
SAVEd

Table of Contents

Other manuals for Commodore 1541

Preview: Maintenance Manual
Maintenance Manual36 pages

Related product manuals