READY AND TRUE READY (R AND TR)
When th e R j u m p e r i s i n s t a l l ed, th e R e ady
s ignal is avail able at th e i n t e r f ace. When th e
TR jumper is in st all ed, the True Ready signal
is available at the interface.
The R j u m p e r i s s t a n d a rd , w h i l e t h e TR
jumper i s op t i onal. These two l i nes are i n d e-
pendent functions, and may be used separately
or together.
R
TR
READY O R TRUE READY
X
-
Ready signal via J1-22.
DISK CHANGE (DC)
T his ou t pu t i s u s e d t o i n d i c at e t o t h e c o n -
troller that a disk change has been made. The
internal s i g na l i s g a t e d w i t h D r i v e S e l e ct .
W hen th e l e ver i s o p ened, th e D i s k C h a n ge
l ine goes low (true), and remains low unti l t h e
trailing edge of the next Drive Select.
DC
DISK CHANGE
Disk Change signal not available.
Disk Change signal available via
J1-12.
TWO-SIDED DISKETTE INSTALLED (2S)
X
Tr ue Re a d y signal via J1-8.
W hen u s i n g t h e Tr u e R e a d y
option, Motor Control 3 may not
be used.
NOTE
W hen a t w o- s i d e d d i s k e t t e i s i n s t a l l e d ,
i nternal circui tr y g a tes this signal w it h D r i v e
S elect. I t s e n d s a l o w ( t r u e ) s i g n a l t o t h e
controller , i n d i c a t in g t h a t a d oub l e - sided
d iskett e
i s i ns t a l l e d ( i n d e x h o l e t wo i s
present). This option is factory installed.
2S
TW O - S I DED DISKETTE
LEVER LOCK OPTIONS (D, DL,
LL,
NL)
Two si ded di s k e t t e s i
rr
na1 n
nt
available.
Two-sided diskette signal available
via J1-10.
The lever lock solenoid, an optional feature,
c an be controlled by th e I n U s e i n t e r f ace lin e
X
X
X
X
X
-
X
L at c h e d by In Use
J1-16.
D
DL
LL
N L LEVE R LOCK
SOLENOID
L atched with Dr i v e
Select.
via J1-16, true (low).
Active energizes
solenoid.
Latched by In Use
via J1-16. Active low,
i n conjunction wit h
Drive Select, latches
the solenoid. The
solenoid remains
latched until In U se
is false (high) on the
leading edge of
Drive
Select.
WRITE PROTECT (WP AND NP)
T his WP opt ion i s used to lock out t h e W r i t e
G ate w h e n
a wr it e pro t e c te d d i s k e tt e i s
installed. It is factory installed.
T he NP op t ion a l l ows th e controller t o w r i t e
o n any d i s k e t te, w h e t her o r n o t i t i s w r i t e
protected. It d oes not stop th e W r i t e P r o t ect
s ignal f ro m b e in g sent on t h e i n t e r f ace l i n e .
T his option is i m p l emented by r emoving W P ,
a nd installing NP .
WP
NP
X
WRITE PROTECT
Disables Write Protect, for
write protected
diskette.
Allows writ ing on any
diskette.
X
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