Bosch Automation CPS21_3, Manual

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Interfaces and Connections 6–9
1070 073 825-103 (02.04) GB
6.5 Floppy Disk Connection
X75 Drive ”A” connector
Used to connect an optional floppy disk drive. The integrated floppy disk
adapter supports the following types of floppy disk drives:
D
3,5 ”
D
Double density (720 kB)
D
High density (1.44 MB)
D
Enhanced floppy mode (2.88 MB)
.
Only one type of drive can be connected at a time.
Male connector, 34–pin (on carrier
board)
Type: 3.5” HD (standard)
Cable length: Max. 0.5 m
Cable type: 34–conductor ribbon cable, screened
Interrupt (IRQ): empty
I/O address: 300H
BIOS preset: Floppy disk controller: Enabled
in the ”I/O Device Configuration” submenu
X75
Pin Assignment
1
3 GND
1
34
5
GND
7
9
11
13
15
17
19
21
23
25
27
29
31
33
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
2
4 Density Select
6
N/C
8
10
12
14
16
18
20
22
24
26
28
30
32
34
N/C
Index
Motor Enable A
Drive Sel B
Drive Sel A
Motor Enable B
Direction
Step
Write Data
Floppy Write Enable
Track 0
Write Protect
Read Data
Head Select
Disk Change
Pin Assignment
X75
Floppy ”A”
boot drive
connector
No. 1 conductor
1
40
Screened ribbon cable