Viglen VIG520S, Manual, Page: 17 / 86

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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
•
1.2 MB, 3.5-inch (driver required)
•
1.25/1.44 MB, 3.5-inch
•
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 also 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
The VIG520S board has multiple AC ’97 V 2.2 compliant audio features.
The audio subsystem includes these features:
•
High performance 3D technology
•
Energy saving power down modes
•
6 channels for full surround sound capability
System BIOS
The system BIOS, from Award 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 add-in boards, you must specify the interrupts used by ISA boards
in the set-up program. The PCI auto-configuration program complies with version 2.2
of the PCI BIOS specification.