Intel Vig390s manual Real-Time Clock, Cmos Sram and Battery, Controller, Serial Ports

The BIOS setup utility can be configured to boot firstly from either the LS120 or standard 3½” floppy drive.

Real-Time Clock, CMOS SRAM and Battery

A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery. The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 VSB applied.

Note: If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS RAM at power-on.

I/O Controller

The I/O controller (Intel® 6300ESB I-O Controller Hub) provides the following features:

•One serial port (optional second serial port).

•One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port (EPP) support

•Serial IRQ interface compatible with serialised IRQ support for PCI systems PS/2-style mouse and keyboard interfaces

•Interface for one 1.44 MB diskette drive

•PCI-X 64/66 ports

•PCI 32/33 ports

•Two P-ATA ports

•Two S-ATA ports with configurable Intel RAID 0 and 1 support

•Intelligent power management, including a programmable wake-up event interface

•SMBus hardware management support

•Integrated USB hub

By default, the I/O controller interfaces are automatically configured during boot up. The I/O controller can also be manually configured in the Setup program.

Serial Ports

One 9-pin D-Sub serial port connector is located on the back panel and is compatible with NS16C550 UARTs.

Vig390s Motherboard Manual V1.0 20