IBM PC 300GL - Manual (Page 49)

42 PC 300 GL and 300 PL
IDE connectors
Table 23. IDE connector pin assignments
Pin Signal I/O Pin Signal I/O
1 RESET O 21 NC N/A
2 Ground N/A 22 Ground N/A
3 Data bus bit 7 I/O 23 I/O write O
4 Data bus bit 8 I/O 24 NC N/A
5 Data bus bit 6 I/O 25 I/O read O
6 Data bus bit 9 I/O 26 Ground I
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 N/A
10 Data bus bit 11 I/O 30 Ground N/A
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 N/A 39 Active# I
20 Key (Reserved) N/A 40 Ground N/A
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