BASF 6106 - Page 21

Disk
Change
Option (Fig. 2-14
)
PIN
34
of
the
interface
can
be used for
the
Disk Change
Option
when the
In Use Option
is
not used.
The
DISK CHANGE
-
Signal notifies
the
host
system that
the
mini
disk
has
been
changed
even if the
drive
was
deselected.
As
soon
as
the
mini
disk is
unloaded the
speed
detector
will deactivate
the
SPEED-
signal
and
the DISK CHANGE
-
FF is
set. The DISK CHANGE
signal is sent
to the host
system
when
the
drive is
selected.
The DISK
CHANGE
-FF will
stay set
when
the
new mini disk
is loaded.
To
deactivate
the
DISK
CHANGE-
signal
the
host
system must
deselect
the drive
again.
The
DISK
CHANGE-
FF
is
then reset
(see timing
diagram Fig.
2-15
)•
To
enable
the Disk
Change
Option
a
Jumper
be installed at JJ 2
Pin 11 and
12.
PWKONKESET/
4-
SPEED
SPEED/
INT.
SELECT/
H>
I/O
ENA
r
"t>
D
Q
C
R
Q
T
3>
DISK CHANGE
-FF
READY
I
^
_JJ
3.
\\U
13
:#
DISK CHANGE: OUT/ Mi
[
TO
THE
IIOS'I
SYSTEM
FIGURE
2
-
14
. DISK
CHANGE
LOGIC
I/O
-
ENA
SPEED
READY/
DISK
CHANGE
-
FF
DISK CHANGE
OUT/
MINI DISK
FIGURE
2
-
15
. TIMING
DIAGRAM DISK
CHANGE
LOGIC
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