Tandy 1400LT - 2. Electrical Interface Connections

2. Electrical Interface
INTERFACE CONNECTION
The FDD interface connection is shown in Fig. C-3.
DRIVE SELECT 1
+5v
+5v 1-
>6
I NDEX (IDX)
+ 5v 3 +5v
WRITE GATE (WG)
GND
3-
TRACK 00 (TOO)
~~
4
-
GND
WRITE PROTECT
(WP)
GND
4
-
DRIVE SELECT0 (DSO) Spindle Motor Circuit
144 -
-
10
41
20
41
22
SIDE 1 SELECT (HS)
>
DI RECTI ON (DR)
GND
z 12
100KQ
FRAME GND
26
0.01
yF
WRITE DATA
GND
5
+5v
Analog Circuit
+5v
READ DATA (RD)
GND
24
4
\
-
l5 GND
17
19
21
23
Figure C-3. Interface Connections
C-6