Humminbird Personal Computer HS-7238 用户手册
13
3.9 Floppy Disk Drive Connector
The HS-7238 uses a standard 34-pin header connector, FD1, for
floppy disk drive connection. A total of two FDD drives may be
connected to FD1 at any given time.
floppy disk drive connection. A total of two FDD drives may be
connected to FD1 at any given time.
FD1: FDD Connector
PIN
Description
PIN
Description
1
GND
2
DRVDEN0
3
GND
4
N/C
5
GND
6
DRVDEN1
7
GND
8
INDEX#
9
GND
10
MTRA#
11
GND
12
DSB#
13
GND
14
DSA#
15
GND
16
MTRB#
17
GND
18
DIR#
19
GND
20
STEP#
21
GND
22
WDATA#
23
GND
24
WGATE#
25
GND
26
TRAK00#
27
GND
28
WRTPRT#
29
N/C
30
RDATA#
31
GND
32
HDSEL#
33
N/C
34
DSKCHG#
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
DR
VDEN0
N/
C
DR
VDEN1
INDEX#
MTR0#
DS1
#
DS0
#
MTR1#
DI
R#
ST
E
P
#
WDATA
#
’
WG
ATE#
TRAK00#
WRT
P
RT
#
PDATA#
1
2
34
33
GND
N/C
GND
N/C
HD
SEL
#
DSKC
HG
#