Motherboard Description |
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level triggered interrupts channel by channel. The integrated DMA controller supports type F DMA in addition to standard ISA DMA modes. Compliant with the PCI2.2 specification, the VT83C686A supports delayed transactions and remote power management so that slower ISA peripherals do not block the traffic of the PCI bus. Special circuitry is built in to allow concurrent operation without causing dead lock even in a PCI- to PCI bridge environment. The chip also includes eight levels (doublewords) of line buffers from the PCI bus to the ISA bus to further enhance overall system performance.
1-9 I/O INTERFACE CONTROLLER
The motherboard uses the VT82C686A
ØSupports 2 serial ports, IR port, parallel port, and floppy disk controller functions
ØTwo UARTs for Complete Serial Ports
⎯Even, odd, stick or no parity bit generation and detection
⎯Programmable baud rate generator
⎯High speed baud rate (230Kbps, 460Kbps) support
⎯Independent transmit/receiver FIFOs
⎯Modem Control
⎯Plug and play with 96 base IO address and 12 IRQ options
ØOne dedicated IR port
⎯Third serial port dedicated to IR function
⎯IR function either through the two complete serial ports or the third dedicated port
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Ø
⎯Standard mode, ECP and EPP support
⎯Plug and play with 192 base IO address, 12 IRQ and 4 DMA options
ØFloppy Disk Controller
⎯16bytes of FIFO
15