Operations Manual
PCI bus multi-8255/8254 adapter
Connector Pin Assignments (JP5) U16/U17
DB
A
B
Functio
n
DB
A
B
Functio
n
1
1
2
CLK0
2
2
1
GND
3
3
4
OUT0
4
4
3
GATE0
5
5
6
CLK1
6
6
5
GND
7
7
8
OUT1
8
8
7
GATE1
9
9
10
CLK2
10
10
9
GND
11
11
12
OUT2
12
12
11
GATE2
13
13
14
CLR3
14
14
13
GND
15
15
16
OUT3
16
16
15
GATE3
17
17
18
CLK4
18
18
17
GND
19
19
20
OUT4
20
20
19
GATE4
21
21
22
CLK5
22
22
21
GND
23
23
24
OUT5
24
24
23
GATE5
25
25
26
+5V
26
26
25
GND
27
27
28
-12V
28
28
27
GND
29
29
30
+12V
30
30
29
GND
31
31
32
-12V
32
32
31
GND
33
33
34
GND
34
34
33
GND
35
35
36
1MHZ
36
36
35
5MHZ
37
37
38
GND
38
38
37
GND
39
39
40
100KHZ
40
40
39
500KHZ
47
31
15
48
32
16
49
33
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