SOYO SY-7VCA user manual

Motherboard Description SY-7VCA

environment.

3)Keyboard controller with PS2 mouse support.

4)Real Time Clock with 256 byte extended CMOS. In addition to the standard ISA RTC functionality, the integrated RTC also includes the date alarm, century field, and other enhancements for compatibility with the ACPI standard.

5)Hardware monitoring subsystem for managing system/ motherboard voltage levels, temperatures, and fan speeds

6)Full System Management Bus (SMBus) interface.

7) Two 16550-compatible serial I/O ports with infrared communications port option. A third serial port is available to be dedicated to the IR interface.

8)Integrated PCI-mastering dual full-duplex direct-sound AC97-link- compatible sound system. Hardware soundblaster-pro and hardware- assisted FM blocks are included for Windows DOS box and real-mode DOS compatibility. Loopback capability is also implemented for directing mixed audio streams into USB and 1394 speakers for high quality digital audio

9)Two game ports and One MIDI port

10)ECP/EPP-capable parallel port

11)Standard floppy disk drive interface

12)Distributed DMA capability for support O ISA legacy DMA over the PCI bus. Serial IRQ is also supported for docking and non-docking application.

13)Plug and Play controller that allows complete steerability of all PCI interrupts and internal interrupts/ DMA channels to any interrupt channel. One additional steerable interrupt channel is provided to allow plug and play and reconfigurability of onboard peripherals for Windows

family compliance.

The VT82C686A also enhances the functionality of the standard ISA peripherals. The integrated interrupt controller supports both edge and level triggered interrupts channel by channel. The integrated DMA

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