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Parts/Test Point Locations 117
System Board Connector Pin Signals
Monitor Port Signals
IDE Cable Connector Signals
Pin
Signal
Name
I/O Pin
Signal
Name
I/O
1 Red Video O 9 +5 V dc
2 Green Video O 10 Synch
Ground
3 Blue Video O 11 Monitor ID Bit
0
4Monitor ID Bit
2
I12SDA I
5Synch
Ground
13 Horizontal
Synch
O
6 Red Ground 14 Vertical
Synch
O
7Green
Ground
15 SCL I
8 Blue Ground
Pin
Signal
Name
I/O Pin
Signal
Name
I/O
1 Host Reset O 21 No
Connection
2 Ground 22 Ground
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
8Host Data
10
I/O 28 No
Connection
9 Host Data 4 I/O 29 No
Connection
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