Page 1
SPECIFICATIONS
FOR
FLOPPY
DISK
DRIVES
SMD
100
Normal
Power
3
1
/2 "
EPSON
Technologie,die
Zeichen
setzt.
•
Japanisches
QuaUtätsprodukt
- - . ' .
3V2-ZoH-Floppy-Disk-Laufwerk
~
, I •
SHUGART-Bus
kompatibel
über
Jeden
5!14
"-ControHer
zu
, .
betreiben
•
Single-Side
40
Tracks
ii!'!I
Mit 2 Laufwerken
und
der
Special-
ControHer-Karte,
Best.-Nr.
0600219
. . .
... . ..
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....
248,-
DM
läßt
sich
preiswert
und
einfach
eine
Doppel-Floppy-Station
für
Apple
realisieren.
EPSON-FloppyLaufwerk
"SMD-110":
Preisvorteil:
60 %
unter
dem
derzeitigen
Markt-
preis.
DruckgußChassis; durchkontaktierte
Epoxy-
Leiterplatte,
schwarze
Front
mit
LED.
Betrieb
an
Apple
mit
SpecialController-Karte
(Best.-Nr.
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Einbaulage
unabhängig.
LxB xH:
147,5 x 105 x 42
mm.
Best.-Nr.
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. . . . . . . . . . . . .
.. . ...
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ab 2 Stück
.............
.
..
je
149,-
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Manual
(24
Seiten,
eng!.)
Best.-Nr.
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...........
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. .
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$Wlflj&U
CelectroniC)
Manual
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Telefon:
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87620
Telex
952547
Page 2
5
PAGE
1 •
Scope
.
................................
.
2.
General
5
General
Specifications
6
~
.
Detailed
Specifications
9
4-1
Configuration
01
interface
signals
9
4-1-1
Electrical
specificationsof
input
signals
..
9
4-1-2
Function
of'
input
signals
9
( 1 )
Drive
select
0
J
·......
9
(2)
Hotor
on
.....
..
10
(J)
Direction
. . ...
·...
..
10
( ~ )
Step
......
·
......
·....
....
10
(5)
H'rite
gate
.... . . ... . ...
· ......
10
~
(6
)
Write
data
. . .... . .... .
......
.
.........
10
(7
)
Side
select
·... . . . . .
...........
11
( 8 )
In
use
.... . . .
·
.........
............
11
4-1-4
Option
functions
11
4-1-5
Electrical
specifications
of
the
output
signals
12
4-1-6
Function
of
the
output
signals
·
12
...
( 1 )
Ready
12
(2
)
Track
00
13
( J )
Index
·...
13
(4)
Read
data
13
(5
)
\lri
te
enable
13
4-1-7
Timing
................
14
Track
seek
timing
14
Head
start
timing
........................
14
Read
data
timing
.........................
15
2
Page 3
( II )
\-Iri
te
start
timing.
15
(5)
Write
data
timing
.......
15
(6)
Control
data
timing
.................
16
4-2
Power
supply
inter~ace
17
4-2-1
Power
supply
specifications
17
4-2-2
Connectors
17
Power
supply
line
~.
1 7
Signal
lines
18
4-2-)
State
of'
wait
19
4-2-4
Connectors
..
19
Installation
19
4-3
5,
3.5
Flexible
Disks
20
5-1
Appearance
20
5-2
Recomrnendable
medium.
20
6.
Outline
Dimension
Drawing
.•............•.....•.....••
21
7.
Notes
on
Use
oi'
Drive
24
7-1
Power
su?ply
24
7-2
Interface
24
"7-)
Error
rate
25
7-4
Caution
25
7-5
Installation
of
drive
25
7-6
Beat
generation
25
8.
Format
•••••••••••••••
0
••••••••••••••••••••••••••••••
26
8-1
IBM
Track
Format
. . . . . ...... ... . . . . ....... . .. . ... .
26
8-2
ISO
Disk
Format
......... . ... . ....... . . . . . ..... . .
26
3
Page 4
1.
Seope
This
speeifieation
applies,
to
SMD-l00
series
(normal
power
consumption
type)
disk
drives
for
3.5"
flexible
dlsks.
2.
General
SHD-l00
series
(normal
power
eonsumption)
drives
are
flexible
disk
drives
designed
to
be
used
as
external
memories
for
personal
computers,
word
processors,
ete.
The
features
of
the
SHD-100
series
drives
are
described
be
10Yl •
(,)
Low
power
consumption:
SMD-l00
series
drives
operate
on
only
2.
lW
(wait)
and
5.2W
(read/write)
power.
(2)
Memory
medium
used
i8
3.5
11
flexible
di.sk
encased
in a hard
cartridge
er
equivalent.
(3)
The
disks
used
have a storage
capacity
of
500K
bytes
per
aide
(equiva-
lent
to a eonventional
single-sided,
double-density
5.25"
floppy
di
sk).
( 4 ) Hi
gh
t r ack
density
(1
35 TPI)
(S
tvt
0 - 1 4 0 . 1 3 0 )
(5)
Use
of
oe
brushless
spindle
drives
assures
long,
trouble-free
service
life.
(6)
The
head
positioning
meehanism
employs
a
step
motor
and
a
steel
band
enabling
fast
(3msee)
access
between
tracks.
(S
M 0 - 1 4 0 ,
1 3 0 )
(7)
The
interface
employed
is
fully
compatible
with
conventional
disk
qrives,
enabling
easy
replacement.
(8)
The
small
aize
and
light
weight
(800g)
of
the
SMD-l00
series
drives
make
thßm
ideally
suited
to a wide
variety
of
applications.
4
Page 5
3.
General
Specifications
Model
Unformatted
(Kbytes)
FM
Memory
HFM 1
Capacity
I
Formatted
(Kbytes)
~'H
1
I
(16
sectors/tracksl
I HFM I
Recording
density
(BPI)
I
FM
I
HFHJ
Data
transfer
speed
(Kbi1
/sec)
IFM I
I
MFM
I
Track
density
(TPI)
Average
rotation
wait
time
(rnsec)
Average
Settliinq
time
He
ad
load
ti.me
Total
Number
of
tracks
160
80
80
40
Inner
track
radius
(mm)
Side
0
24.6875
24.
8
'7
5
side
1
23.1875{
23.375
Outer
track
radius
(mm)
Side
0
39.50
39.50
Side
1
38.00
38.00
Recording
methods
FM/MFM
R/W
head
TUnnel
erase
type
No.
of
heads
2
2
Head
positioning
method
Step
motor
Type
Direct
drive
Spindle
motor
Start-up
time
(sec)
1
.0
1
.0
Rotation
speed
(rpm)
300 300
5
Page 6
Model
I
SMD-140
I
SMD-130
I
SMD-120
I
SMD~11
0 I
Index
detector
I
Noncontact
detection
method
I
Detector
I~Tr
a_c_k
O_O
d_e_t_e_c_t_o_r
~I~N_o_n
c_o_n
t_a_c
t d
e_t_e
c_t_i
o_n me_t_h
o_d
~1
__
__ __
____________
__ __ ______ __ __ ____ __
____
I
Write
enable
detector
I
Contact
detection
method
I
I
Cartridge
set
detector
I
Contact
detection
method
I
Environmental
conditions
I
Temperature
I 5
to
45°C
I
(Operating)
1
Humidity
I
20
to
80%
RH
(non-condensinq)
I
I
Hax.
we
t
bUl~
29°C
I
I
tempera ture
I I
I
Vibration
15
to
60Hz,
O.6G
max.
I
Environmental
conditions
Te m perature
I -2 0 t 0
65°C (-4 0 t 0 6 5
·C
t r
ans
po
r t ) I
(s
torage
and
transport)
Hurnidity
I
95%
RH
max.
(non-condensinq)
I
Vibration
I 5
to
60Hz,
3G
max.
1
Shock
I SOG
max.
Power
supply
I
+12V
(+5~)
Wait
I 6 0
mA
(TYP)
I
R/W
1 3 0 0 mA C
TYP
)
I
Motor
start
85 0
mA
(
max
• )
+5V
(+5%)
wait
280 mA
(TYP)
R/W
320 mA
(TYP)
420'mA
(max.)
Power
consumption
Wai
t..
2.
1w
(TYP)
I
R/W
5.
2 H
(TYP)
I
Outline
dimensions
"
Width
101.6mm
Depth
147.5mw
Height
40mm
Weight
800g
L
I
Designed
orientations
Four
arienta
tions
•.(See
page
19
)
I
I
Ins
talla
tion
method
I
I
l
I
Applicable
disks
I
I
Screw
holds
on
the
side
and
lower
panels
of
the
disk
drive
are
used.
(See
page
22
I
Outline
Dimension
Drawing.
)
3.5
11
flexible
disk.
(For
details,
see
page
20.)
6
Page 7
Model
SMD-140 I SMD-130 I SMD-120 I
SMD-l10
I
I
Re
liabi
1i
ty
I
MTBF
10,
000
POH
I
I~
__________
~
______
--------~
I f
MTTR
0.5h
I
I~
__________
~
______________
~
I I
Designed
service
life
5
years
I
I~
________
~
______________
~
I I
Sof
tware
error
ra
te
Less
than 1 bi t per
10
9
I
J~
__________
~
______________
~
I I
Hardware
error
rate
Less
than 1 bit
per
10
'2
I
I~
__________
~
______________
~
I I
Seek
error
rate
Less
than 1 seek
per
106 opera-
I I
tions
I I
Disk
service
life
3 x
106 passes/track
I I
Connector
Power
supp1y
AMP
171822-4
or
equivalent
Signals
JAE
PS-34SEo-04P1-1C/Oor
equiva1ent
Front
panel
material
ABS
resin
(Black)
Safety
standard
Conforms
to
UL
standard.
7
Page 8
4.
Oetailed
Specifications
4.1
Configuration
of
interface
signals
Tha
SMD-l00
series
(low
power
consumption)
flexible
disk
drives
are
designed
so
that
a
maximum
of 4 drives
can
be
connected
in a daisy
chain
configuration.
All
signal
input
levels
are
~TL
compatible.
The
power
supply
and
interface
require
+SV
and
+12 V power.
4.1.1
Electrical
specifications
of
input
signals
...
Low" :;
TRO
E
VIN:
OV
to
+O.4V
I
IN:
5mA
('l''iP)
"High"
FALSE
VIN:
+2.5V
to
+5.25V
IIN:
OmA
(open)
+sv
1
~
lk{l
D
~~----------~I~[
~
1438
5. 6 KO
C-MOa
The
terminating
resistance
array
is
set
at
the
correct
direction
(mark
is
inside)
in
the
single
line
socket
on
the
main
unit:
For
the
daisy
chain
connection;
resistance
array
can
be
only
installed
into
one of
the
(four)
drives.
Tbe
disk
drive
with
the
resistance
array
instal1ed
must
be
charged
with
current
in
order
to
operate
any of
the
drives.
4.1.2
Function
of
input
signals
(1)
Drive
select
0"
3
(080
,...
OS)}
A ll\axilnum
of
four
S1-10-100
sel."'ies
(low
power
consumption)
disk
drives
can
be
connected
in
a
daisy
chain
configuration.
Selection
of
the
drive
numbers
is
performed
by
SSl
of
the
DIe
connector
on
the
main
PCB.
When
this
switch
is
operated,
only
the
signals
from
the
selected
drives
will
be
input.
At
the
position
MX,
drive
is
selected
no
matter
~hat
state
of
drive
select
sigIlai.
8
Page 9
(2)
Motor
ON
(MON)
The
spindle
drive
is
operated
when
this
signal
is
low.
However,
read
and
write
operations
are
only
performed
when
the
read
(ROY)
signal
is
low.
(If
the
dlsk
cartridqe
is
not
set
in
the
drive,
the
spindle
drive
will
not
operate.)
The
RDY
signal
goe5
low
within
one
second
after
the
MON
signal
15
input
when a disk
cartridge
has
been
set.
(3)
Direction
(DRTN)
This
signal
determines
the
direction
of
the
movement
of
the
step
motor
which
controls
the
movement
of
the
read/write
heads.
When
this
signal
i9
low,
the
read/write
head
will
move
toward
the. center
of
the
disk
and
when
it
1s
high,
toward
the
edge
of
the
dlsk.
(4)
Step
(STP)
The
low
pulse
of
this
s~gnal
causes
the
·s t e p
motor
to
move
in
the
direction
indicated
by
the
DRTN
signal.
The
response
step
cycle
(Ts
min.)
15
3ms/track
for
models
140/130
and
6ms/track
for
models
120/110.
When
the
write
gate
signal
1s
low,
step
1s
internally
inhibited.
Wben
the
s'eek
direction
i5
reversed,
the
reverse
step
pulse
must
be
sent
after
the
last
pulse
(Ts
min
+
6ettlinq
:
tlwe).
A:
Jms(mil)
B
""6ms(mn)
I
m.dmn\
1 3 0 )
A.
B
(SMD-120,
1 1 0 )
(5)
Wri
te
ga
te
fWTG)
This
signal
selects
between
read
and
write
data.
When
th1s
signal
1s
low,
write
data
1s
enabled
and
when
high,
read
data
1s
enabled.
Write
operations
to a cartridge
to
which a write
enable
cover
has
not
be~o
affixed
are
internally
inhibited
by
the
disk
drive.
After
the
WTO
signal
goes
high,
there
is
a
1.3ms
eraae
timing.
Fo'r
this
reason
the
see~
or
read
operation
will
not
begin
immediately.
(6)
Write
data
(WTO)
This
signal
transanits
the
write
data
that
is
beiog
written
to
the
disk.
The
fall
of
th1s
signal
from
high
to
low
causes
the
~rite
current
flowing
through
the
read/write
head
to
reverse
polarity.
'!his
signa
"l
is
operable
only
when
the
write
gate
signal
is
low.
9
Page 10
-"+--r"
O.
25
11&(mh)
2. IlIs(
max)
FM
recordin9
(7)
Side
select
(SSL)
This
signal
selects
whether
the
upper
or
lower
read/write
head
will
be
used.
(upper
head)
11
HIGH"
1:
Side
0
(lower
head)
NOTE;
This
signal
is
used
only
~ith
models
SMD-l'O/SMD-120.
(8)
In
use
(IUL)
This
signal
is
used
to
turn
the
LED
on
the
front
panel
of
the
disk
drive
on
and
of
f.
When
this
signal
1s
low,
the
LED
turns
on
and
when
i t
i5
high,
the
LED
turns
of
f •
This
LED
is
controlled
by
the
drive
select
signal
as
the
factory-set
condi
tion.
"
4.1.4
Option
functians
By
operating
the
switches
on
the
PeB
of
the
SMD-l00
series
disk.drive
it
is
possible
to
select
the
signal
that
will
contral
the
illumination
of
the
LED
on
the
front
panel
of
the
drive.
10
Page 11
(1)
When
pin
No. 1 (lU)
is
shorted
The
tED
1s
controlled
by
the
in
use
signal
(pin
No.
J2-4).
(2)
When
pin
No.
2
(10)
is
shorted
The
LED
i5
controlled
by
the
drive
select
signal.
(l)
When
pin
No. 3 are
sharted.
The
LED
illuminates
only
when
the
in use
signal,the
drive
select
si,nal
and motor
on
signal
are
all
active.
(10
1s
shorted
as
the
factory-set
condition.)
4.1.5
Electrical
specifications
of
the
output
signals
SN7438(TI)
or
equivalent
1s
used
as
the
output
drive
for
SHD-l00
series
disk
drives.
'(7
"J
':"
SMO-l00
leri8,
dl.k
drIve
-;;:
SN" 414
or
.qulvalenl
HOlt
Iv,tem
dlsk drive
"Low"
;:;
TRUE
"High"
::;
FALSE
VIN~
I
IN:
VIN:
I
IN:
+0
to
+O.4V
4
Qn
1\
(M A X)
+2.5
to
+5.25V
OmA
(open)
4.1.6
(
1)
Funct10n
of
the
output
signals.
Ready
(RDY)
This
signal
goes
low
to
indicate
correctly
set
in
the
drive
and
detector
is
provided
to
detect
control
the
ready
signal.
that
the
disk
cartridge
has
15
rotating
normally.
In
the
the
presence
of
the
disk
cart
been
SMD-l00,
a
ridge
and
to
11
Page 12
(2)
Track
00
(TKOO)
This
signal
goe
.s
low
when
the
read/wri
te
head
is
in
the
outermost
posi-
tion
on
the
disk.
(3)
Index
(IDX)
One
low
pulse
of
thls
signal
is
genera
ted
fQr
each
rotation
of
the
disk.
The
trailing
edge
of
this
pulse
shows
the
beginning
of
the
track.
ZOOms
(nom)
0.5,....,Gms
(4)
Read
data
(ROD)
ROD
outputs
the
bit
stream
of
read
data
fram
the
read
circuit.
This
signal
i3
normally
high
and
goes
low
in
response
to a change
in
the
polarity
of
tqe
data
on
the
disk.
4.us
(0001)
Bjls(nom)
--t---
.....
r-1.us ± O.
35.us
(5)
Write
enable
(WE)
This
signal
goes
low
and
i3
sent
to
the
host
computer
when a disk
cartridge
with
a
wri~e
enable
notch
is
set
in
the
disk
drive.
12
Page 13
4 • 1 • 7
Ti
mi
n9
(1)
Track
seek
timinq
WRITE
GATE
DRIVE
SELECT
OIRECTlON
... 1
1-
'Jls (min)
l.usernn)
I
ps(
mh)
• 1 I
..
l.9PlI(mll1
--.J--t--'ms(
mtl)
A : 3 m I
(ill
I
D)
B :
6ms(mln)
IJls
(mn)
,
JA:S
(m
,l
u)
A
18m'(mlll)
......-
......
--41
I
"'.
(m
I
Il)
, ß
~
:
21m
I
(Pl
1
Il)
STEP
A
(SMD-140.
1 3 0 )
B
(SMD-l
20,
1 1 0 )
(2)
Read
start
timing
DRIVE
SELECTi
STEP
~'Jls(min)
WRITE
GATE
l}Js(
mill)
VALID
AEAD
DATA
1
j.1S
(m
in)
--I~
A
18m.
(1ll1 A)
B 21
I:q,
(m 1 n)
1',
ami
(m
l A)
I}J
S (
IIIr1
)
A
(SMD-140,
3 0 )
B
(SMD-l
20,
o )
13
Page 14
(3)
Read
da
ta
timing
For
FM
.f}As(nom)
...--~
ß,us(nom)
l,us±O.35}AS
For
MFM
4,us(nom)
r---......-t
6}As(nom)
-+-~I,us±O.JS,us
8,us(nom)
(4)
Write
start
timing
DRIVE
SELf.CT
STEP
: 1 8 ms
(m
'I)
B : 2 1 inS
CD,
I )
WAlTE
GATE
_
~--ro_
A
l}Js
(mln)
WAlTE OATA
(5)
write
data
timing
For
FM
_of-
........
-
8}lS(max)
I}lS (roo)
A:
B :
8}1s:t 40n5
tSMD-l
4
O.
1 3 0 )
(SMD-l
2
O.
1 0 )
For
MFM
6J,ls
±
JOns
O.25,us(mw-.)
4J,lS
±
20ns
.---~
--+--+-0
Z.I}l$(
mal)
8J,lS ±.eOns
14
Page 15
--
(6)
Con
trol
da
ta
timi
ng
When
the
disk
cartridge
has
been
set
and
the
initial
track
position
1s
00.
-11
POWEA
ON
MOTOR
ON
DRIVE
SELECT
READY
VALID
TRACK
00
VALID
INDEX
DIAECTION
STEP
WRITE GATE
WRITE
OATA
SIDE SELECT
1\
\----------
t
Il'o(m••)
.,
.0500
(max)
,
~
)
200ms(nom)
I
c
lsec(max)
I
~I~s(min)~
-+---~I\l
~r---r-
---i-I
-
I
•
i2'
n
V
11'(m
)
A:
2ms(max)
11'
.1.,,",
,\
~
~
8:
5ms(max)
I .
~
t;::
::::y
'-"
s(
m1n)
"'
J
Bj4s(mu)
l~s(mil)
U1;L
1.
~
m.
(m l
a)
IOO}J$(mln) • I
~_
---~
SMD·140/120
on1v
)1-
1
1
I i
~."
(mi
!!Ul
(SMD
- l 4
O.
3 0 )
Ijls(mln)
(SMD-l
2
O.
1 1 0 )
VALIO
READ
DATA
A
B
15
Page 16
4.2
Power
supply
interface
4.2.1
Power
supply
specifications
(main
PCB
connector
Jl)
Voltage
Ripple
voltage
+12V±5~
250
mV
p-p
max.
100
mV
p-p
max.
+
5V±57.
NOTE:
Power
supply
voltage
is
that
at
power
supply
connector
Jl
of
the
main
PCB.
4.2.2
Connectors
SMO-l00
series
(normal
power
conswnption)
disk
drives
are
connected
the
host
~ystem
using
two
different
connectors.
Power
is
supplied
by
apower
line
connected
to
connectors
Pl
and
Jl.
Signal
communication
is
performed
by
connectors
Pl
and
J2.
<Power
supply
line>
SMD·100
5erles
(normal
power
Host
sYiicem
comumption)
di5k drive
+
12\1
"
nl'I<fn
+
12'1
1.7
J I
O.
01
u
16
Page 17
<Signal
lines)
SMO·l00
'8,iel
(normal'power
consumplion'
disk
drive'
H<lst. 'Y118m
IM
USE
(
IUU
L
DRIVE
SELECT 3 (OS
3 )
INDEX
(IDX)
OAiVE
SELECT 0 (050
)
DRIVE
SELECT 1 (OS
I )
DRIVE
SELEOT 2 (OS
2 )
MOTOR
ON
(MON)
DIREOTION
(DRTN)
STEP
(STP)
WAlTE
OATA
(WTD)
WRITE GATE
(WTG)
TRACK
00
(TK
00
)
WRITE PAOTEOT
(WPT)
REAO
DATA
(ROD)
*
SIOE
SELECT
(
SSL)
READY
(ADY)
LI
4
3
1
6
-
5
8
1
10
9
12
II
14
13
16
15
18
11
20
19
22
21
24
23
26
25
28
27
JO
29
J2
JI
)4
33
*
SMO-140/120only
17
Page 18
4.2.3
Stat~
of
~ait
SED-lOO
series
(nornal
power
consumpution)
is
switched
to
power-save
mode(state
of
wai
t)
by Moter-ON
si
gnal
(J2).
4.2. 4 Connectors
For
connectors,
we
recommend
the
following:
Power
supply
connector
Pl.
RECEPTACLE
AMP
171822-4
CONTACT
PIH
AHP
170262-1
Signal
connector
P2
PS-34SEO-D4
Pl-1C
PS-34SEO-D4PI-ID
(Closed tipe)
(Oaisy
ti
pe)
4.3
InstaUa
tion
Horizontal
installation
Button-side
Button.:.side
(the
peB
eide
must
be
up)
down
installation
up
installation
lllclinod
Inatallatlon
(0""30°)
18
Page 19
-
---
3.5
11
5.
Flexible
Disks
5.1
Appea.ra.nce
3.3(.129)
Auto
Ihuttor
L
ab
e 1
are&
t-"
'\
.,
-
..
..
-
----0
..
~'
..
..
~
\
\
,
I
\
I
\
,
,
,
I
.1
:, 94
(3.10)
\
I
\
I
\
,
,
,
"
I
, ,
"
;;
0
...............
......-._--
..
/
I
1
90(3.54)
Top
vlew
Side
l-
Vlew
5·2
Rec·om·mend·a·ble
med
um
.
.
5 . 2 • 1
S 0 N Y - - - - - 0 M-0 4 4 4 0 (ci 0 U b 1 e - s
d e
d)
OM-D3440
(single-s
d e
d)
19
1]
0/';
-
.....
"",10
,
.,
'"
"
....
_----_
...
/
l
(
\
Met.a)
hub
~
\
\
Wr
1 t D
\
,
,
onablo
...
h 0 , 0
...
'....
Bottom
vlew
Page 20
6.outli
ne
oLnension
urawing
-
If
fFill~~I-~lf
1"'------3§T
~
~
i [ 1
I-------.--l@
I
I
/
-4-.---+1-
-E9-
er
--'-
I
i
-$-
)
[
\ -
-1---------:-
1
----
lOS
.~· o.Z
1
(4./
3"
)
[l
'""'
N~
20
...:~
""0
~
__
----
____
--
____________________
L_Jv
r---------------~--------------
2-N~-
3Z/JNC
d1,; Z -
t'D
DE;rn;..6
I
I
Page 21
2'O~
'Pb-
l
-------~-
.-.,
:-eu
~-
~
'-'
~
...;J
0.
........
~.",
....
J./-l
"W
r.,b~-O)
01
ZP
+
-e-
CS9
on
c::c
--.
U.!
:---
"J
"
',i~
~IQ
UJ
t)
~
a
,...
~
-W
\.J't
h-
r:\
~
'--
N
N
9-H.Ld20
n.l-p
'U)
NnZE-'1~-p
9-f{.l'i3o
I
?NnZ'i-~N-Z
o
t
o
("
/.,5-/ )
Page 22
7.
Notes
on
Use
of
Drivos
7-1
Powor
supply
7-1-1
Two
power
sources
of'
12V
and
SV
are
required.
'fhe
sequence,
however,
is
not
specified.
7-1-2
The
rise
timo
of
power
supply
affects
the
power
on
or
reset
operation
of
the
internal
circuit.
Tharafore,
tha
90%
rise
time
of'
thc
SV
power
souree
must
ba
100015
or
less.
The
diskette
is
protected
at
power
on
and
power
of'f'.
but
the
write
gate
signal
should
not
be
allowed
to
beeome
active.
7-1-3
When
the
motor
on
signal
becomas
semi-aetive,
the
standby
mode
is
switched
on
and
the
operation
of'
the
R/W
circuit
is
stopped.
7-1-4
With
a
nonnal
type,
the
power
supply
capaeity
"
bocomes
maximum
at
the
spindie
motor
start
with
12V
system
and
at
the
maximum
write
action
with
the
SV
system.
7-2
Interf'ace
7-2-1
The
signal
system
is
interchangeable
with
the
conventional
5.25
11
system.
'rhe
canne c tor.
hO\-Jever.
i 5
in
compl
iance
in
des i gn
l.J i t h S
ONY
I 5
J.
5" d r i v e •
7-2-2
Daisy
chain
Up
to
.tour
daisy
chain
connection
is
possible.
The
terminating
resistancc
array
is
set
:for
all
the
drivos
at
the
shipment
.from
tho
factary.
Hemove
all
the
arrays
on
tho
samo
cablo
except
f'ar
the
one
on
tho
end
drive.
Seleetion
for
each
drivo,
which
is
dane
by
a
short
plug.
should
be
mado
caref'ully
without
repetition.
22
Page 23
7-2-3
Specification
change
The
lighting
condition
of
the
IN
USE
LED
can
be
changed
by
means
of
a
short
plug.
Use
it
in
a
desired
setting
position.
7-3
Error
ratt;
The
error
rateof
the
specifications
is
the
value
with
the
:f
a u 1 t 1 e s s
dis
lee t t e .
Well
chosen
diskettes
must
be
subjected
to
the
error
rate
test.
7
-4
Cauti.on
Tha
drive
design
has
taken
into
consideration
the
external
noise
oi'
CHT,
etc.
Bowever,
do
not
use
it
too
close
to
the
CRT
\~ithout
perfect
shielding;
otherwise,
the
Read/
Write
capability
of'
the
drive
will
be
doteriorated.
7-5
Installation
of'
drive
7-5-1
Install
the
drive
securely,
usine
the
four
screw
holes
(M3,
PO.5,
6
DEEP)
on
the
drive
side
or
the
four
screw
holes
(M3,
~O.5.
6
DEEP)
on
the
drive
bottom.
7-5-2
Sincc
the
tolüranc
e
of
the
intervals
of
the
instal-
lation
screw
holes
i5
~O.2mm,
ample
care
must
bo
exercised
in
ensurine
the
positional
accuracy
and
bore
accuracy.
7-6
Heat
generation
Relative
positions
must
be
designed
with
such
care
that
th~
ambient
temperature
of
the
drive
hecomes
the
operating
temperature
of
the
specifications.
The
upper
limit
tem-
perature
must
be
strictly
observed
particularly
about
the
diskette.
23
Page 24
8.
Format
The
rEH
f'ormat
or
the
ISO
f'ormat
is
rccommended.
8-1
IBM
Track
Forma
t
~
...
Oetce
ted
n
rL
Last
Sector
Sector
01
Sector
02-
1--10
F;eld
'I
-1
1-
Oata
Field
-i
)
CH'
IC~1l
C~p
SyoC
Gap
S,oc
AMI
10
CRC
CIP
SIOC
AM2
oala
CRC
Gap
Syoc
I
C;P
1 4
0
I
2
1
lode.
10
Uall
/1-&1
Hark
Addrt,>s
or
Mark
Oeleled
Oah
Har~
128
27
44
16
Byte
r--
(Dccimal)
40
6
I
26
6
1
4
2
11
b
1
2~b
"2
'12
73
9
Single
r--
Density
512
SB
37
5
f-
Oata
FW
~omaI,
Ff
00
FC'
FF
00
fC
'l
'1
FF
00
or
(Oala,
' J
FF
Fr
FH'
256
54
152
16
Byte
I-
80
12
J
1
50
12
J
I
4
2
22
12
3
I '
)12 2
84
182
9
Double
(Decimal)
r--
Densrty
1024
116
94
5
Data
fß
4E
00
C2'
FC
'IE
00
AI'
FE
'2
,)
4E
00
AI
or
(Oal.)
, )
4E
4E
[H~rm.,,)
fB
• ThlS
data
byte
rncludes
mlsslng
clock
.
•
-2
10
"eid
.)
CRC
chech.
byte
)
rack
8-2
ISO
Disk
Format
Index
~L--_-------------------------------41r----f1-
1-------------
Sector
1
Sector
2-
t---ID
Freld
--
t-
Oala
Field
-
r---
._-
-~ill~
-:~
- - -
~p
31
Gal) 4
,11'
enc
0.\"'
"
elle
Gap
1I
GalJ
I
Sy,
',c
I\d(IIUS~
C
11
R N
IJ2"
Gao 2
SYIlC;
tA
..
,~
Data
iIT2
J
S),ne
Gao
"4
-----
I-~~
'
- -
-6-
f--.--
-4~
r-::-
'
l
Srngle
19y1riOt.:lIllil)
16
1 2
1I
(,
I
2
6
11
Oensity
~...-c_
FF
00
Fe;
---;-r-
I-t
n
00
B'~
I"
Oala
'\
Fr
00
I~
FF
--
f-
I
DO'lble
lByte(O«:"~
12
12
00---4-f2~
12
J!
I
2
12
11
Deusity
p-tuJltolDt<<fUI
4E
00
AI'
FE~--7-'
'\
4t.:
~ll·J:~
Data
.\
4E
00
II
4E
Preamble
Seelor
:d-~
"'",
.,
.
~,'b('0
<?o
c/'<>
• 1 :
This
data
byte
IOcludes
misSlng
elock
.
• '2:
lOaddress
•
):CRC: X'~+xlJ
+X'
+-1
121:l
l{j
1R8
27
101
16
~ß"
?~6
-
1"16
J)I
42
130 9
Density
si"2
-16
603-
58
~
--5-
256-
I)""?
372
--
I~
I
266
16
Dovl.lle
~2
--rr-
(i58
84
296
Y
OClIS,ly.
!~2..!.
---R.
120?
.-
7i6_
f--
~
.
,.--L
r-
'
Oala
G..p
Gap
Seclor
J
<I
Track
24
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