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5
ADDITIONAL
INFORMATION
• t==
.
Expansion module
A
number of
options
are available in your Expansion module.
Th
e use of the features are complete ly
dependent
of the
application on
your
CD-I disc.
Your Expansion module
has
been
designed to
w
ork
w
ith the
follow
ing
options.
• Floppy disc
drives
• Printer interface
• RS-232C interface
• Extension
slots
•
SCS
I
interface board
• System RAM extension board
Floppy disc drives
•
The
Expa
nsion module is
equipped with
high density
drives, this provides an unformatted storage
capacity
of
2 Mbytes.
• Use 3.5
inch
high
density (HD)
discs. Double density
(DD)discs can be used also,
but provide
a capacity of 1
Mbyte.
Note:
New
discs have to be
'formatted'
before they can be
used.
Consult an 0S-9 User Manual for available disc utilities.
• To take a floppy
disc
out, press the EJECT button. Do not
exchange the discs during
an application
unless
the
application asks
yo
u
to
do so.
Printer interface
This
interface
allows the
attachment of
printers
or other
external devices
that
acce
pt
8 bit
parallel data
at standard
TTL
levels. This interface is
suitab
le
for
the Centronics
compatible
parallel printer interface.
RS-232C interface
This
serial input/output
interface is
compatible
w
ith RS-232C
standard.
It
allows seria
l
communication with
data terminals
or
modems (hardware
handshake).
Extension slots
Tw
o
extens
ion
slots provide access to a
limited CPU
bus
coming
from the MMC module.
For the
two
extension slots,
identical connectors
are
provided
w
hich accept
a
board edge
connector.
10
:;p~:
·
111■111111~
t
■1:■1■
SCSI interface board
The
22ER9130 SCSI interface board is installed in the
extension slot of your
Expansion
module.
The SCSI interface board
al
low
s the
connection
of
a
variety
of
SCSI-based peripheral devices
external to the CD-I
system,
e.g. hard discs,
W
ORM drive, magnetic tape drives, etc.
Features.
•
Sing le ended (cab le
length: ma ximum 6
m)
•
Asynchronous
data
transfer (maximum
transfer rate: 1.5
Mbyte/sec.)
•
Initiator
role
•
Built-in
OMA controller
(OMA
transfer
from
SCSI
to
memory)
•
Programmable interrupt
handling for
SCS
I
to CPU68070-
hardw
are bus arbitration
• Disconnect/reconnect
• On-board free
ROM
socket for
dedicated
appli
cation
•
Sample
hard disc driver
provided
on
floppy disc as
w
ell
as
run-time module
for
Rodime 80 Mbyte hard disc
System RAM extension board
The 22ER9110
System RAM extens ion
board
is
installed
to
the
extension slot of your
Expansion module.
The System RAM extension board provides two memory
banks,
each
512Kbyt
es, to be used as additional system
memory.
The system architecture does not allow the decoding
of
video data
when stored
in
the
RAM
extension
board.
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