American Megatrends Atlas PCI-II, User Manual

Page: 35 / 93

Chapter 1 Hardware Installation 29
Step 5 Attach Cables,
Continued
Onboard Adapters The Atlas PCI-II motherboard has:
•
two serial ports (J3 and J4),
•
a parallel port (J6),
•
an IDE controller on the PCI bus. The primary
IDE connector is J8. The secondary connectors
is J1.
•
a floppy controller (J7).
The serial and parallel port connectors are described
below. The IDE connector is described on page
38.
The floppy connector is described on page 35.
Conflicts AMIBIOS minimize conflicts between onboard and
offboard I/O devices.
AMIBIOS automatically checks the adapter cards
installed in the expansion slots on the Atlas PCI-II
motherboard for a hard disk or floppy controller and
serial or parallel ports.
J3 SER1 J4 SER2 J3 and J4 are 10-pin connectors that provide an
AT-compatible serial port interface. Connect the
cables supplied with the motherboard to J3 and J4.
The serial port base I/O port address and other
serial port settings can be selected in Peripheral
Setup in WINBIOS Setup.
The J3 and J4 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 10 CUT PIN
Cont’d