Apollo-II PCI Pentium ISA Motherboard User’s Guide
26
Step 5 Attach Cables,
Continued
Onboard Adapters
The Apollo II motherboard has:
•
two serial ports (CN7 and CN6),
•
a parallel port (CN8),
•
an IDE controller on the PCI bus. The primary
IDE connector is IDE1. The secondary
connector is IDE2.
•
a floppy controller (CN9).
The serial and parallel port connectors are
described below. The IDE connector is described
on page 29. The floppy connector is described on
page 27.
Conflicts
AMIBIOS minimizes conflicts between onboard
and offboard I/O devices.
AMIBIOS automatically checks the adapter cards
installed in the expansion slots on the Apollo II
motherboard for a hard disk or floppy controller
and serial or parallel ports.
CN7, CN6
CN7 and CN6 are 10-pin connectors that provide
an AT-compatible serial port interface. Connect
the cables supplied with the motherboard to the 10-
pin serial connectors. The serial port base I/O port
address and other serial port settings can be
selected in Peripheral Setup in WINBIOS 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
10
CUT PIN
Cont’d