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Commodore 1541-II - Test;Demo Diskette

Commodore 1541-II
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APPENDIX
E:
TEST/DEMO
DISKETTE
HOW
TO
USE
The
"HOW
TO
USE"
programs
provide
brief
descriptions
of
the
other
programs
on
the
Test/Demo
diskette.
THE
VIC-20
&
C-64
WEDGES
Additional
commands
are
available
which
allow
you
to
type
short
instructions
to
the
disk
drive.
Load
and
run
the
VIC-20
WEDGE
if
you
have
a
VIC;
use
the
C-64
WEDGE
if
you
have
a
Commodore
64.
Using
either,
you
will
be
able
to
press
backslash
(/)
followed
by
the
program
name
and
the
RETURN
key
to
load
a
program;
the
"/"
means
load
from
disk
drive.
For
example,
type
"/how
to
use"
to
load
that
program.
Type
">"
or
"@"
and
then
press
RETURN
to
display
the
current
disk
error
status.
Type
">$"
or
"@$"
and
RETURN
to
display
the
directory
without
erasing
the
current
program.
DOS
5.1
The
DOS
5.1
program
is
not
intended
to
be
loaded
directly,
but
is
loaded
instead
from
the
program
C-64
WEDGE.
Its
load
address
is
$CC00
hexadecimal.
PRINTER
TEST
The
PRINTER
TEST
prints
a
listing
of
characters
in
a
form
that
makes
it
easy
to
check
the
mechanical
and
electronic
capabilities
of
the
printer.
DISK
ADDR
CHANGE
Use
this
program
to
change
the
device
number
of
the
disk
drive.
It
is
a
soft
change—when
the
system
is
turned
off,
the
disk
drive
is
reset
to
its
original
device
number.
VIEW
BAM
The
VIEW
BAM
program
allows
a
programmer
to
examine
the
contents
of
the
sec
tors
that
make
up
the
block
availability
map
(BAM)—the
table
that
DOS
uses
to
identify
blocks
that
have
been
allocated
to
the
files
on
that
diskette.
CHECK
DISK
The
CHECK
DISK
program
can
be
used
to
make
sure
a
new
diskette
that
has
been
headered
is
in
fact
a
good
diskette:
The
program
writes
to
every
block
to
verify
its
ability
to
store
information
and
identifies
any
diskette
that
contains
a
bad
block.
Don't
use
such
diskettes.
DISPLAY
T&S
The
DISPLAY
T&S
program
allows
a
programmer
to
examine
the
contents
of
a
block
by
specifying
the
particular
track
number
and
sector
number
that
identifies
that
block.
PERFORMANCE
TEST
The
PERFORMANCE
TEST
program
tests
the
electronic
and
mechanical
capabili
ties
of
the
disk
drive
whenever
necessary.
Use
this
program
whenever
you
suspect
there
may
be
damage
to
the
drive.
93

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