Parallel Port Connector
The on-board parallel port connector (PARALL) is a 2x13-pin male
header connector. The pin assignment is shown below:
Pin
Description
Pin
Description
1
-STROBE
14
-AUTO FEED XT
2
Data Bit 0
15
-ERROR
3
Data Bit 1
16
-INIT
4
Data Bit 2
17
-SLCT IN
5
Data Bit 3
18
Ground
6
Data Bit 4
19
Ground
7
Data Bit 5
20
Ground
8
Data Bit 6
21
Ground
9
Data Bit 7
22
Ground
10
-ACK
23
Ground
11
-BUSY
24
Ground
12
PE
25
Ground
13
SLCT
26
No Connection
Serial Port 1 & 2 Connectors
The serial port 1 and 2 connectors are the 2x5-pin male headers COM1
and COM2. Users should use a flex cable with a 9 or 25 -pin male D-
subminiature receptacle at one end and a 2x5-pin female header at the
other end to provide RS-232 serial interface. The pin assignment for
COM1/COM2 is defined below:
Pi
n
Description
Pi
n
Description
1
Carrier Detect (RLSD)
6
Receive Data (RXD)
2
Transmit Data (TXD)
7
Data Terminal Ready (DTR)
3
Signal Ground
8
Data Set Ready (DSR)
4
Request To Send (RTS)
9
Clear To Send (CTS)
5
Ring Indicator (RI)
10
No Connection
486MIS System Board User's Manual Page 17
