Technical information

Chapter 2. System Board Features
Infrared Port
Two UART serial ports are integrated into the system board. One of these ports is configured into an
infrared port. When an optional infrared module is attached to the port, the computer is capable of
transmitting and receiving wireless communications with other infrared-enable devices.
The infrared module plugs directly into the infrared port and provides a link of up to one meter. The
infrared port uses any of the same four assignments as the serial port. The infrared port is compliant with:
 IrDA-2, including 4 Mbps, 1.2 Mbps, and 1.15 Mbps baud rates
 Sharp-IR
 TV-Remote mode
The system board has one 9-pin connector for the infrared port. For information on the connector pin
assignments for the infrared port, see “Infrared Port Connector” on page 37.
Parallel Port
Support for extended capabilities port (ECP), enhanced parallel port (EPP), and standard parallel port
(SPP) modes is integrated into the system board. The modes of operation are selected through the
Configuration/Setup Utility program with the default mode set to SPP. The ECP and EPP modes are
compliant with IEEE 1284.
The following table shows the default port assignments for the parallel port used in configuration.
Note: When the computer is started, the resource assignments are subject to change during the
power-on self-test (POST).
On the system board, one 25-pin connector is provided for the parallel port. For information on the
connector pin assignments, see “Parallel Port Connector” on page 35.
Table 5. Parallel Port Assignments
Port Assignment Address Range IRQ Level
Parallel 1 03BCh–03BEh IRQ7
Parallel 2 0378h–037Fh IRQ5
Parallel 3 0278h–027Fh IRQ5
10 Technical Information Manual