Operations Manual
PCI bus multi-8255/8254 adapter
1.
Connector Pin Assignments (JP1) U1/U2
DB
A
B
Functio
n
DB
A
B
Functio
n
1
1
2
P1A1
2
2
1
P1A0
3
3
4
P1A3
4
4
3
P1A2
5
5
6
P1A5
6
6
5
P1A4
7
7
8
P1A7
8
8
7
P1A6
9
9
10
P1B1
10
10
9
P1B0
11
11
12
P1B3
12
12
11
P1B2
13
13
14
P1B5
14
14
13
P1B4
15
15
16
P1B7
16
16
15
P1B6
17
17
18
P1C1
18
18
17
P1C0
19
19
20
P1C3
20
20
19
P1C2
21
21
22
P1C5
22
22
21
P1C4
23
23
24
P1C7
24
24
23
P1C6
25
25
26
GND
26
26
25
GND
27
27
28
P2A1
28
28
27
P2A0
29
29
30
P2A3
30
30
29
P2A2
31
31
32
P2A5
32
32
31
P2A4
33
33
34
P2A7
34
34
33
P2A6
35
35
36
P2B1
36
36
35
P2B0
37
37
38
P2B3
38
38
37
P2B2
39
39
40
P2B5
40
40
39
P2B4
41
41
42
P2B7
42
42
41
P2B6
43
43
44
P2C1
44
44
43
P2C0
45
45
46
P2C3
46
46
45
P2C2
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