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Pegasus PCI Motherboard User’s Guide
20
Step 10 Connect I/O
Onboard Adapters The Pegasus PCI motherboard has:
• two serial ports (J2 and J3),
• a parallel port (J8),
• an IDE controller on the PCI bus (the primary IDE connector is J11 and
the secondary IDE connector is J9), and
• a floppy controller (J4).
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 Pegasus PCI motherboard for a hard disk or floppy controller and
serial or parallel ports.
J3 SER1 J2 SER2 J2 and J3 are 9-pin connectors that provide an AT-compatible serial port
interface. Connect the cables supplied with the motherboard to J2 and J3. The
serial port base I/O port address and other serial port settings can be selected
in Peripheral Setup in WINBIOS® Setup.
The J2 and J3 pinout is shown below.
Pin Signal 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