Parallel Port Connector; Serial Port 1 & 2 Connectors - Intel 486MIS Quick Start Manual

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
1
2
3
4
5
6
7
8
9
10
11
12
13
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.
COM1/COM2 is defined below:
Pi Description
n
1 Carrier Detect (RLSD)
2 Transmit Data (TXD)
3 Signal Ground
4 Request To Send (RTS)
5 Ring Indicator (RI)
486MIS System Board User's Manual
-STROBE
Data Bit 0
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
-ACK
-BUSY
PE
SLCT
Pin Description
14 -AUTO FEED XT
15 -ERROR
16
17 -SLCT IN
18 Ground
19 Ground
20 Ground
21 Ground
22 Ground
23 Ground
24 Ground
25 Ground
26 No Connection
The pin assignment for
Pi Description
n
6 Receive Data (RXD)
7 Data Terminal Ready (DTR)
8 Data Set Ready (DSR)
9 Clear To Send (CTS)
10 No Connection
-INIT
Page 17