Motherboard connectors pinouts  > obsolete computers pinouts
 2  4  6  8 10 12 14 16 18 20 22 24 26 28 30
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 1  3  5  7  9 11 13 15 17 19 21 24 25 27 29
Pin Name Description
1GNDGround
2GNDGround
3VCC+5 VDC
4VCC+5 VDC
5SD1Data Bus 1
6SD0Data Bus 0
7SD3Data Bus 3
8SD2Data Bus 2
9SD5Data Bus 5
10SD4Data Bus 4
11SD7Data Bus 7
12SD6Data Bus 6
13/SDREQDMA Request
14/INTXInterrupt Request
15/CSSChip Select
16/SDACKDMA Acknowledge
17/IORI/O Read
18/IOWI/O Write
19A8Address Bus 8
207M7.16 MHz System Clock
21A6Address Bus 6
22A7Address Bus 7
23A4Address Bus 4
24A5Address Bus 5
25A2Address Bus 2
26A3Address Bus 3
27/IFRST+5 VDC
28A1Address Bus 1
29GNDGround
30GNDGround

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Source(s) of this and additional information: Darren Ewaniuk"s CDTV Technical Information, from Hardware Book
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