Step 8 Connect Onboard I/O - American Megatrends Atlas PCI-II User Manual

Step 8 Connect Onboard I/O

Onboard I/O The Atlantis 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.
Conflicts AMIBIOS minimizes conflicts between onboard and offboard I/O devices.
AMIBIOS automatically checks the adapter cards installed in the expansion
slots on the Atlantis 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
1
2
3
4
5
26 Atlantis PCI Pentium II ISA Motherboard User's Guide
Description Pin
Carrier Detect 6
Receive Data 7
Transmit Data 8
Data Terminal 9
Ready
Ground
Signal Description
Data Set Ready
Request to Send
Clear to Send
Ring Indicator
Cont'd