IBM PC 300, Maintenance Service Manual

Page: 138 / 163

138
IDE Cable Connector Signals
Pin Signal Name I/O Pin Signal Name I/O
1 Host Reset O 21 DMA Request I
2 Ground N/A 22 Ground Power
3 Host Data 7 I/O 23 Host IOW O
4 Host Data 8 I/O 24 Ground Power
5 Host Data 6 I/O 25 Host IOR O
6 Host Data 9 I/O 26 Ground Power
7 Host Data 5 I/O 27 I/O Channel Ready I
8 Host Data 10 I/O 28 No Connection N/A
9 Host Data 4 I/O 29 DMA Acknowledge O
10 Host Data 11 I/O 30 Ground Power
11 Host Data 3 I/O 31 Host IRQ I
12 Host Data 12 I/O 32 No Connection N/A
13 Host Data 2 I/O 33 Host A1 O
14 Host Data 13 I/O 34 No Connection N/A
15 Host Data 1 I/O 35 Host A0 O
16 Host Data 14 I/O 36 Host A2 O
17 Host Data 0 I/O 37 Host CS0 O
18 Host Data 15 I/O 38 Host CS1 O
19 Ground Power 39 ACTIVE bar I
20 No Connection N/A 40 Ground Power