Viglen Vig535b Manual page 13

I/O Interface Controller
The motherboard uses the SMC FDC37C777 I/O controller which features:
• Serial ports:
 Internal send/receive 16-byte FIFO buffer.
 Four internal 8-bit DMA options for the UART with SIR support (USI).
• Multimode bidirectional parallel port:
 Standard mode, IBM and Centronics compatible.
 Enhanced parallel port (EPP) mode with BIOS and driver support.
 High-speed extended capabilities port (ECP) mode.
• Floppy disk controller:
 N82077 compatible.
 Single diskette drive interface.
 16-byte FIFO.
 High-performance digital data separator (DDS).
 PC-AT and PS/2 drive-mode support.
• Keyboard and mouse controller:
 Industry standard 8042A compatible.
 General-purpose microcontroller.
 8-bit internal data bus.
• ISA Plug-and-Play compatible register set.
• PCI PME interface.
• Intelligent auto power management:
 Shadowed write-only registers for ACPI compliance.
 Programmable wake up event interface.
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
Two 9-pin D-Sub serial port connector are located on the back panel and is
compatible with NS16C550 UARTs.
Parallel Port
The connector for the multimode bidirectional parallel port is a 25-pin D-Sub
connector located on the back panel. In the Setup program, the parallel port can be
configured for the following:
• Compatible (standard mode).
• Bidirectional (PS/2 compatible).
• Extended Parallel Port (EPP).
• Enhanced Capabilities Port (ECP).
Vig535b Motherboard Manual
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