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51
52
When
peripherals are attached, p ressing
•
will
present a menu such as
this:
1
=
VIDEO
OUT. ON.
SLOT=
5
2
~
MOD
E
N
IN, ON,
SLOT
=
4
3
=
MODEM
OUT.
ON. SL0T=
4
4
=
PRINTER
O
UT.
OFF.
SLOT
=
3
'
.
55
1
FREE
6
=
EXT
RAM,
32
15
FREE.
SLOT
=
1
The
ON-
OFF
status
of
a given
peripheral
can
be
changed
by
typing
its
respective
menu
number.
Thus,
in
the above
menu,
pressing
•
causes
the
VIDEO
OUT to
go
OF
F.
The
ON
or
OFF status,
as in
the
above
110
Menu,
really
indicates
,
when
a
peripheral
is
ON
,
that
it is available to the
current program.
The
program
however,
may
or
may
not
be designed
to
use
that
particular
peripheral.
For
example,
a
program
designed
to
create
graphic
patterns
in
the
LCD
Display does
not
send
output to any
other
peripheral
because no
other
peripheral
is designed to
display
identical
graphic
patterns; so
even if
you
were
to
turn on
the
TV
Adaptor
or
Modem
,
nothing
would
be
sent.
You
can make as many selections from
the 110
Menu as you
want
and
you will
remain
within the 110
Menu (unlike
the
Primary
Menu and
the
menus for the
File
System and
Clock/
Controller,
which
leave the menu
as soon as a
selection
is
made).
To return
from
the
1/0
Menu
to
the
interrupted
activity,
press
•
again.
The
CLEAR key
can
also
be
used
to
leave
the
110
Menu.
In the
case
of
Programmable
Memory
areas,
the Current
Memory
appears
in
the
Display
in
negative
lettering
(white
on
black);
the others,
in
normal
lettering.
The
number
of
free characters available is also
noted.
Pressing
the
number of a
memory
area causes
that
area
to
become the Current Memory
and deactivates any
area that
was
the
Current
Memory.
With
the
exception
of
the
TV Adaptor,
all of
the
above
peripherals-like
the HHC
itself-
can operate
without
the
AC Adaptor.
WHEN THINGS GO WRONG
As with
all computers,
hand-held
to
main-frame,
things
sometimes
do
not
go
as you
planned
:
displays
go
blank
or strange words
like
RESET
and RESTART
appear.
Usually in these
occasional
instances
,
the
most that
you
can
lose with
the HHC
and
have to
re
-do
is the
current
line
or
current
calculation.
Just press
and be
resigned
to
doing
that small part
again.
Example:
if the
word, RESET
appears in
the
Display,
it
implies
thatthere
has b
een
a momentary
problem within the
HHC or attached capsule or
peripheral.
Press
,
and
pick
up again
with
the
interrupted
program
one
step before the
difficulty.
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