Connectors most probally used.            
               
  SERIAL PORT            
 
Signal
DB-9 Connector

DB-25 Connector

RJ-45 Connector
Old Numeration
DCD (Data Carrier Detect)
1
8
RX (Reception)
2
3
TX (Transmision)
3
2
DTR (Data Terminal Ready)
4
20
Ground (GND)
5
7
DSR (Data Set Ready)
6
6
RTS (Request To Send)
7
4
CTS (Clear To Send)
8
5
RI (Ring Indicator)
9
22
           
               
  PARALLEL PORT            
 
DB-25 female Connector
Pin
Signal

Pin
Signal
1
#Strobe
2
Data0
3
Data1
4
Data2
5
Data3
6
Data4
7
Data5
8
Data6
9
Data7
10
#Ack
11
Busy
12
Paper Empty
13
Select
14
#Auto Feed
15
#Error
16
#Init
17
#Slct in
18
Ground
19
Ground
20
Ground
21
Ground
22
Ground
23
Ground
24
Ground
25
Ground
           
               
 
Centronics 36 pins Connector
Pin
Signal
Pin
Signal
1
Strobe
19
GND
2
Data 0
20
GND
3
Data 1
21
GND
4
Data 2
22
GND
5
Data 3
23
GND
6
Data 4
24
GND
7
Data 5
25
GND
8
Data 6
26
GND
9
Data 7
27
GND
10
#Ack
28
GND
11
Busy
29
GND
12
Paper Empty
30
GND
13
Select
31
#Prime
14
#Auto Feed
32
#Error
15
{OSCXT}
33
GND
16
GND
34
N/C
17
Frame Ground
35
N/C
18
+5v
36
N/C
           
               
  VGA CONNECTOR            
 
DB 15 pins female Connector
Pin
Signal
Pin
Signal
1
Red
9
N/C
2
Green
10
Ground
3
Blue
11
Monitor ID bit 0
4
Monitor ID bit 2
12
Monitor ID bit 1
5
N/C
13
Horizontal Sincronism
6
Ground (Red)
14
Vertical Sincronism
7
Ground (Green)
15
N/C
8
Ground (Blue)
           
               
  KEYBOARD CONNECTOR            
 
DIN 5 pins female Connector
Pin
Signal
1
CLK/CTS Open Collector
2
RxD/TxD/RTS Open Collector
3
Reset
4
GND
5
+5v
Conector
Pin
Signal
1
CLK/CTS Open Collector
2
RxD/TxD/RTS Open Collector
3
Reset
4
GND
5
+5v
           
               
  MIDI CONNECTOR            
 
MIDI IN
DIN 5 pins female Connector
Pin
Signal
1
N/C
2
N/C
3
N/C
4
Current Source
5
Current Sink
MIDI OUT
DIN 5 pins female Connector
Pin
Signal
1
N/C
2
N/C
3
N/C
4
Current Sink
5
Current Source
           
               
  SCSI CONNECTOR            
 
Centronics 50 pins Connector
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
1
GND
2
#DB0
27
GND
28
GND
3
GND
4
#DB1
29
GND
30
GND
5
GND
6
#DB2
31
GND
32
#ATN
7
GND
8
#DB3
33
GND
34
GND
9
GND
10
#DB4
35
GND
36
#BSY
11
GND
12
#DB5
37
GND
38
#ACK
13
GND
14
#DB6
39
GND
40
#RST
15
GND
16
#DB7
41
GND
42
#MSG
17
GND
18
#DBP
43
GND
44
#SEL
19
GND
20
GND
45
GND
46
#C/D
21
GND
22
GND
47
GND
48
#REQ
23
GND
24
GND
49
GND
50
#I/O
25
Open
26
TERMPWR
           
               
  JOYSTICK CONNECTOR            
 
DB-15 female Connector
Pin
Signal
Pin
Signal
1
+5v DC
9
+5v DC
2
Button 4 (A_PB1)
10
Button 6(B_PB1)
3
Position 0(A_X)
11
Position 2(B_X)
4
GND
12
GND
5
GND
13
Position 3(B_Y)
6
Position 1(A_Y)
14
Button 7(B_PB2)
7
Button 5(A_PB2)
15
+5v DC
8
+5v DC
           
               
  ISDN CONNECTOR            
               
 
Primary ISDN BNC 75 Ohm connector
Pin
Signal
Outer Conductor (Shield)
TX+/RX+
Inner Conductor
TX-/RX-





Primary ISDN RJ-45 120 Ohm connector (From left to right, latch down, as viewed from the rear)
Pin
Signal
1
RX+
2
RX-
3
 RX Ground (selection from jumper)
4
TX+
5
TX-
6
 TX Ground (selection from jumper)
7
Not connected
8
Not connected
           
               
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