Floppy Interface - Fujitsu Siemens Computers RELIABILITY D1859 Technical Manual

Floppy interface

Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
D1859 (Econel 50)
Signal
GND
FDHDIN (low asserted)
GND
not connected
Key
not connected
GND
Index (low asserted)
GND
Motor A Enable (low
asserted)
GND
Drive B Select (low
asserted)
GND
Drive A Select (low
asserted)
GND
Motor B Enable (low
asserted)
GND
Pin assignment of internal ports
1
Pin
18 Step DIR (low asserted)
19
20 Step Pulse (low asserted)
21
22 Write Data (low asserted)
23
24 Write Enable (low asserted)
25
26 Track 0 (low asserted)
27
28 Write Protect (low asserted)
29
30 Read Data (low asserted)
31
32 Side 1 Select (low
33
34 Disk Change (low asserted)
Signal
GND
GND
GND
GND
GND
GND
GND
asserted)
GND
13