V1.0 Vig625M Motherboard Manual
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Floppy Controller
The I/O controller is software compatible with the N82077 floppy drive controllers and
supports both PC-AT and PS/2 modes. In the Setup program, the floppy interface can
be configured for the following floppy drive capacities and sizes:
360 KB, 5.25-inch
1.2 MB, 5.25-inch
720 KB, 3.5-inch
1.44MB, 3.5 inch
1.2 MB, 3.5-inch (driver required)
2.88 MB, 3.5-inch
PS/2 Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel. The +5 V lines to
these connectors are protected with a PolySwitch circuit that, like a self-healing fuse, re-
establishes the connection after an over-current condition is removed.
The keyboard controller supports the hot-key sequence <Ctrl><Alt><Del> for a software
reset. This key sequence resets the computer‟s software by jumping to the beginning of
the BIOS code and running the Power-On Self Test (POST).
Audio Subsystem
These audio connectors are used for audio devices. You can differentiate the colour of
the audio jacks for different audio sound effects.
Line-In (Blue) - Line In is used for external CD player, tape player or other audio
devices.
Line-Out (Green) - Line Out, is a connector for speakers or headphones.
Mic (Pink) - Mic, is a connector for microphones.
RS-Out (Black)
– Rear-Surround Out in 4/5.1/7.1 channel mode.
CS-Out (Orange)
– Center/Subwoofer Out in 5.1/7.1 channel mode.
SS-Out (Gray)
– Side-Surround Out 7.1 channel mode.
Management Extension Component
System BIOS
The system BIOS, from Phoenix Technology, provides ISA and PCI compatibility. The
BIOS is contained in a flash memory device on the system board. The BIOS provides
the power-on self test (POST), the system Set-up program, a PCI and IDE auto-
configuration utility, and BIOS recovery code.
PCI Auto Configuration
The PCI auto-configuration utility works in conjunction with the Set-up program to
support using PCI add-in boards in the system. When you turn on the system power
after installing a PCI board, the BIOS automatically configures interrupts, DMA channels,
I/O space, and so on. Since PCI add-in boards use the same interrupt resources as ISA
