96M4211o
User’s Manual I/O port pin assignment
Floppy Port
40
A.2 <Floppy Port>
Connector:
FDD
Type: 34-pin (2 x 17) 2.54-pitch header
Pin Description
Pin Description
1
Ground
2
DRIVE DENSITY SELECT 0
3
Ground
4
DRIVE DENSITY SELECT 1
5 Ground
6 N/C
7 Ground
8 INDEX-
9
Ground
10
MOTOR ENABLE A-
11
Ground
12
DRIVER SELECT B-
13
Ground
14
DRIVER SELECT A-
15
Ground
16
MOTOR ENABLE B-
17 Ground
18 DIRECTION-
19 Ground
20 STEP-
21 Ground
22 WRITE
DATA-
23 Ground
24 WRITE
GATE-
25 Ground
26 TRACK
0-
27 Ground
28 WRITE
PROTECT-
29 Ground
30 READ
DATA-
31 Ground
32 HEAD
SELECT-
33 Ground
34 DISK
CHANGE-
1
2
33
34
FDD
