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182
Appendix D: Technical reference
29
MEDSB
30
/RDATA
31
GND
32
/SIDE1
33
MEDSA
34
/DSKCHG
IDE interface connector
The IDE interface connector is a 40-pin, IDC male connector.
Pin
Signal
1
/RESET
2
GND
3
DD7
4
DD8
5
DD6
6
DD9
7
DD5
8
DD10
9
DD4
10
DD11
11
DD3
12
DD12
13
DD2
14
DD13
15
DD1
16
DD14
17
DD0
18
DD15
19
GND
20
KEY
21
DMARQ
Media Sense B
I
I
Read Data
-
Ground
O
Head Select
Media Sense A
I
O
Disk Change
I/O
Description
O
Reset
-
Ground
I/O
Data 7
Data 8
I/O
Data 6
I/O
I/O
Data 9
I/O
Data 5
I/O
Data 10
I/O
Data 4
I/O
Data 11
I/O
Data 3
Data 12
I/O
I/O
Data 2
I/O
Data 13
I/O
Data 1
I/O
Data 14
Data 0
I/O
I/O
Data 15
-
Ground
-
Key
O
DMA Request
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