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!-
Saving
to
a disk
is
only half
Ule
sccrcL
Al
the
end
of
the day, always
make a
backup
copy
of
your
disk.
No
matter
how
careful
you
are,
disks can get damaged. The only way to
guard
against a
damaged
disk is
10
have a
spare
copy.
C-m sofi",'a!"C
break?
Software
doesn't
"break,· but
it
may contain bugs. A
bug
is a
programming crror that causes
unexpected
or
undesirable things to
happen.
AILhough software may
appear
"buggy," the
problem
can
lie
with
the hardware
or
the user.
If
you think your software has problems,
check
the
manual firs!.
If,
after reading the manual,
you
still
think
the
software is nOl
working
correctly,
do
a
repeat
test: Note the
error
and
then follow
the
same
sequence
of
steps
to
see
if
you can gel the
error
to
happen
again. If it
docs, your next task is to flgurc
QuI
whether
you have a hardware
problem (something wrong
with the
computer
itself
or
with a disk
drive, for
example).
Try
running
other
programs
on
your
computer. If they also
don't
work properly,
chances
are that
hardware
is
the problem.
If you try running
the sortware
on
your dealer's
computer
and
have
the
same
problem, you've probably discovered a software bug.
Once
you've caught a bug, report
it
to
your
dealer. The
dealer
may
have a patch (a corrected piece
of
software)
or
be
able to help you
work
around
the problem.
lr
your
dealer
can't
help, contact the
sortware publisher directly; most have sortware
support
teams
available
to
answer
your
quCStions.
Ilow
much
do
I
need
10
know
aboul
Opcr:1ting
systems?
Using a general
utilitics disk
is
the closest you may
need
to
get
to
an
operating
system.
If,
however,
you
plan to
do
serious program-
ming, you'll probably
need
more in-depth
knowledge.
Jr
you
choose
to program in
BASIC,
read BASIC Programm(ng With
ProDOSand
the
PmOOS
Techn~al
Kcjerrmce
Manual.
lr you
want
to
write DOS programs, you'll
need
the DOS User's
Kil.
(DOS is the
operating system Apple used berore
ProooS.)
Finally, ir you
want
to
write Pascal programs, you'll
need
the Pascal
operating
system
and
the accompanying manual. Logo works with the ProDOS
operating system;
the Logo manuals explain
how
to
usc
ProooS
with Logo.
Appendix
A:
Ask.
Apple
107
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