IBM PC 300GL Type 6561, Technical Information Manual

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Appendix A. Connector Pin Assignments
IDE Connectors
1
2 40
39
Figure 32 (Page 3 of 3). System Memory Connector Pin Assignments
Pin x64 Non-Parity x72 ECC Pin x64 Non-Parity x72 ECC
80 NC NC 164 NC NC
81 NC NC 165 SA0 SA0
82 SDA SDA 166 SA1 SA1
83 SCL SCL 167 SA2 SA2
84 VCC VCC 168 VCC VCC
Figure 33. IDE Connector Pin Assignments
Pin Signal I/O Pin Signal I/O
1 NC O 21 NC NA
2 Ground NA 22 Ground NA
3 Data bus bit 7 I/O 23 I/O write O
4 Data bus bit 8 I/O 24 Ground NA
5 Data bus bit 6 I/O 25 I/O read O
6 Data bus bit 9 I/O 26 Ground NA
7 Data bus bit 5 I/O 27 I/O channel ready I
8 Data bus bit 10 I/O 28 ALE O
9 Data bus bit 4 I/O 29 NC NA
10 Data bus bit 11 I/O 30 Ground NA
11 Data bus bit 3 I/O 31 IRQ I
12 Data bus bit 12 I/O 32 CS16# I
13 Data bus bit 2 I/O 33 SA1 O
14 Data bus bit 13 I/O 34 PDIAG# I
15 Data bus bit 1 I/O 35 SA0 O
16 Data bus bit 14 I/O 36 SA2 O
17 Data bus bit 0 I/O 37 CS0# O
18 Data bus bit 15 I/O 38 CS1 O
19 Ground NA 39 Active# I
20 Key (Reserved) NA 40 Ground NA
Appendix A. Connector Pin Assignments
31