15
3
Connection
This chapter describes how to connect peripherals, switches and
indicators to the WAFER-7850 board.
3.1 Floppy Disk Drive Connector
WAFER-7850 board equipped with a 34-pin daisy-chain driver
connector cable.
•
CN5 : FDC 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
GATE#
25 GROUND 26
TRACK
0#
27 GROUND 28
WRITE
PROTECT#
29 N/C 30
READ
DATA#
31 GROUND 32
SIDE
1
SELECT#
33 N/C 34
DISK
CHANGE#
1
2
33
34
16
3.2 Ultra ATA33/66/100 IDE Disk Drive Connector
You can attach two IDE( Integrated Device Electronics) hard
disk drives to the WAFER-7850 IDE controller.
CN4 (IDE 1) : Primary IDE Connector
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1 RESET#
2 GROUND
3 DATA
7
4 DATA
8
5 DATA
6
6 DATA
9
7
DATA 5
8
DATA 10
9 DATA
4
10 DATA
11
11 DATA
3
12 DATA
12
13 DATA
2
14 DATA
13
15 DATA
1
16 DATA
14
17 DATA
0
18 DATA
15
19 GROUND
20 N/C
21 N/C
22 GROUND
23 IOW #
24 GROUND
25 IOR#
26 GROUND
27
N/C
28
BALE - DEFAULT
29 N/C
30 GROUND
-
DEFAULT
31 INTERRUPT
32 IOCS16#-DEFAULT
33 SA1
34 N/C
35 SA0
36 SA2
37
HDC CS0#
38
HDC CS1#
39 HDD
ACTIVE# 40 GROUND
41
VCC 5V
42
VCC 5V
43 GROUND
44 N/C
1
2
43
44
