CP
1M
manages the organisation
of
saving
and
loading programs to the RAM
disk, just like any other disk, with the following additional features:
i) Input
and
output speed
is
much higher
than
other disk devices even ordi-
nary floppy disk drives.
ii) The PX-S
is
very little larger in
size
and weight than without the disk added.
iii) The Intelligent RAM disk can be write protected with a switch and so per-
manently protected.
Apart
from having more available memory, the Intelligent RAM Disk Unit
is
used in exactly the same way as the normal RAM disk.
It
cannot be changed
in size, nor can any
of
the PX-S RAM be used
if
the Intelligent RAM disk
is
attached. Thus when initializing with an Intelligent RAM Disk connected, no
message will come up asking for the size
of
the RAM disk. You will be asked
whether it should be formatted however.
When an Intelligent RAM Disk Unit
is
fitted, a check
of
the contents
is
made
each time on power up, to ensure the
data
is intact. This only occurs
if
DIP
switch
4-5
is
set to ON.
If
the
data
is
corrupted, the screen will clear and a mes-
sage will appear to ask
if
you wish the RAM Disk to be formatted. The check
takes eight seconds.
If
DIP
switch
4-5
is
set
to
the OFF position this check will
not be performed. Since it
is
unlikely
that
the
data
will be corrupted, it
is
often
more convenient to set the switch to OFF.
It
is
necessary
to
perform a reset
in order
to
activate this
DIP
switch. Take care
not
to
alter the country settings.
When setting the size
of
the RAM disk using the CONFIG program,
if
the In-
telligent RAM Disk
is
connected, the size will be displayed but there will be
no
option to change the size.
The Intelligent RAM Disk unit has its own battery to preserve the contents
of
the memory when the PX-S
is
not
in use. This backup switch should be set
to
ON when the unit
is
installed. However,
if
the unit
is
disconnected from the
PX-S for long periods
of
time, the switch should be turned
off
so
that
the bat-
tery does not completely run down.
The battery does not allow the Intelligent RAM Disk unit
to
be disconnected
and then used on a different PX-S while still keeping the contents
of
memory
intact.
4-20
4.1.4 Floppy disk drives
Additional Floppy Disk Drives are provided for use with the PX-S.
As the drives are a separate item, they have a their own manual
to
show how
to use them. There are also separate programs for copying and formatting disks
plus other software. Use
of
these programs
is
covered in the manual supplied
with the disks.
Please consult your EPSON dealer for further details
of
the Floppy Disk Drives.
4-21
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