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PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TABLE 5-8 Expansion Bus Connector (C side/D side)
Signal Names
SIGNAL
1/0
DESCRIPTION
PIN
SIGNAL
1/0
DESCRIPTION
-
NOT USED
21
-
NOT USED
-
NOT USED
22
GND
GROUND (OV)
NOT USED
23
DACKOO
0
DMA ACKNOWLEDGE
-
SIGNAL
-
NOT USED
24
-
NOT USED
-
NOT USED
25
-
NOT USED
-
NOT USED
26
-
NOT USED
-
NOT USED
27
-
NOT USED
-
NOT USED
28
10ERRO
I
1/0
ERROR
-
NOT USED
29
-
NOT USED
GND
GROUND (OV)
30
GND
GROUND (OV)
-
NOT USED
31
-
NOT USED
NOT USED
32
DACK20
0
DMA ACKNOWLEDGE
-
SIGNAL
IRQ61
I
INTERRUPT REQUEST
33
-
NOT USED
-
NOT USED
34
-
NOT USED
-
NOT USED
35
-
NOT USED
-
NOT USED
36
-
NOT USED
DRQ21
0
DMAREQUEST
37
MDSLO
0
BUILT IN MODEM SELRCT
-
NOT USED
38
-
NOT USED
-
NOT USED
39
IRQ71
I
INTERRUPT REQUEST
-
NOT USED
40
GND
GROUND (OV)
5-13
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