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Chapter 2 Installation
29
Floppy Drive Connector (CN9)
(FPC) Floppy Drive Connector (
CN9
)
Pin
Signal
Pin
Signal
1
Vcc
2
INDEX
3
Vcc
4
DRIVE SELECT 2
5
Vcc
6
DISK CHANGE
7
N/C
8
Vcc
9
DENSITY SELECT
10
MOTOR 0
11
N/C
12
DIRECTION
13
Vcc
14
STEP
15
GND
16
WRITE DATA
17
GND
18
WRITE GATE
19
GND
20
TRACK 0
21
GND
22
WRITE PROTECT
23
GND
24
READ DATA
25
GND
26
HEAD SELECT
Parallel Port 1 Connector (CN10) and
Parallel Port 2 Connector (CN21)
The mainboard is designed to support two parallel ports. Port 1
connector (
CN10
) also designated as LPT1 is a standard 25-pin
D-sub connector specially prepared for external interface. And
port 2 connector (
CN21
) designated as LPT2 in the form of a 13x2
pin header connector for embedded connection purposes. Both
can be enabled and disabled in the BIOS system setup. For exam-
ple if LPT1 is disabled, LPT2 or LPT3 is enabled. And if LPT2 is
disabled, LPT1or LPT3 is enabled. The pin definitions for both
CN10
and
CN21
are listed as follows: (
Please turn to next page
).