Chapter 1 Hardware Installation
29
Step 8 Connect Onboard I/O
Onboard I/O
The Olympus motherboard has:
•
two serial ports (COM1 and COM2),
•
a parallel port (LPT),
•
an IDE controller on the PCI bus. The primary IDE connector is IDE1. The
secondary connector is IDE2.
•
a floppy controller (FDD).
The serial and parallel port connectors are described below. The floppy
connector is described on page 31. The IDE connector is described on page 33.
Conflicts
AMIBIOS minimizes conflicts between onboard and offboard I/O devices.
AMIBIOS automatically checks the adapter cards installed in the expansion
slots on the Olympus motherboard for a hard disk or floppy controller and serial
or parallel ports.
Serial Ports
COM1 and COM2 are DB9 connectors that provide an AT-compatible serial
port interface. Connect the cables supplied with the motherboard to the DB9
serial connectors. The serial port base I/O port address and other serial port
settings can be selected in Peripheral Setup in AMIBIOS Setup. The serial
connector pinout is shown below.
Pin
Description
Pin
Signal Description
1
Carrier Detect
6
Data Set Ready
2
Receive Data
7
Request to Send
3
Transmit Data
8
Clear to Send
4
Data Terminal Ready
9
Ring Indicator
5 Ground
Cont’d