19
Chapter-3
Connection
This chapter gives all necessary information of the peripheral's connections, switches
and indicators.
3.1 The Floppy Disk Drive Connector
A standard 34-pin header daisy-chain driver connector provides as CN17 with
following pin assignment. Total two FDD drivers may connect.
??
CN17 : FDD CONNECTOR
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
GROUND
2
REDUCE WRITE
3
GROUND
4
N/C
5
GROUND
6
N/C
7
GROUND
8
INDEX#
9
GROUND
10
MOTOR ENABLE A#
11
GROUND
12
DRIVE SELECT B#
13
GROUND
14
DRIVE 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 DATA#
25
GROUND
26
TRACK 0#
27
GROUND
28
WRITE PROTECT#
29
GROUND
30
READ DATA#
31
GROUND
32
SIDE 1 SELECT
33
GROUND
34
DISK CHANGE#