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A-4 Connector Pin Assignments
Table A-9
Expansion Connector
31
61
91
1
120
90
60
30
Pin Signal Pin Signal
1 Video - Green Gun 26 Signal Ground
2 Video - Blue Gun 27 Signal Ground
3 Video - Horizontal Sync 28 Audio Signal from CD Drive - Left Channel
4 Video - Vertical Sync 29 MIDI Serial Input
5 Convenience Base ID 30 MIDI Serial Output
6 Convenience Base ID 31 +5V Supply - Off when in Suspend
7 Convenience Base ID 32 Video - Red Gun
8 Convenience Base ID 33 Signal Ground
9 Convenience Base ID 34 Signal Ground
10 Convenience Base ID 35 Signal Ground
11 Convenience Base ID 36 Printer Strobe
12 Convenience Base ID 37 Signal Ground
13 Convenience Base ID 38 Printer Auto-Line Feed
14 Printer Acknowledge 39 IRQ from Convenience Base NIC
15 Printer Busy 40 Printer Error
16 Printer Paper Error 41 Ground
17 Serial Port Receive Data 42 Printer Initialize
18 Serial Port Transmit Data 43 Ground
19 Serial Port Data Set Ready 44 Printer Select In
20 Serial Port Clear to Send 45 Ground
21 External Keyboard Data Line 46 Printer Select
22 External Keyboard Clock Line 47 Serial Port Carrier Detect
23 Game Port - SWA 48 Serial Port Data Terminal Ready
24 Game Port - SWB 49 Serial Port Request to Send
25 MCD Dock 50 Serial Port Ring Indicator
* Active Low
Continued