American Megatrends MAN-759 manual Connect I/O, Pin Signal Description

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	9	Ring Indicator
	Ready
5	Ground	10	CUT PIN

Cont’d

20Pegasus PCI Motherboard User’s Guide