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Motherboard Manual
J_COM1: Serial Port Header
The motherboard has a serial port header for connecting RS-232 Port.
J_PRINT1: Printer Port Header
This header allows user to connect a printer to the PC.
Pin
Assignment
1
-Strobe
2
-ALF
3
Data 0
4
-Error
5
Data 1
6
7
Data 2
8
-Scltin
9
Data 3
10
Ground
11
Data 4
12
Ground
13
Data 5
18
Pin
14
15
16
17
18
-Init
19
20
21
22
23
24
25
26
Pin
Assignment
1
Carrier detect
2
Received data
3
Transmitted data
4
Data terminal ready
5
Signal ground
6
Data set ready
7
Request to send
8
Clear to send
9
Ring indicator
10
Key
Assignment
Ground
Data 6
Ground
Data 7
Ground
-ACK
Ground
Busy
Ground
PE
Ground
SCLT
Key
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