System Specifications C-5 PIIX4 South Bridge allows PCI masters to achievefull PCI bandwidth. Integrated 8x32-bit buffer for bus master PCI IDEburst transfers. Bus Master Mode. Post write and read prefetch buffers are integratedfor increased performance. Enhanced DMA Controller supports PCI DMA with3 PC/PCI channels and distributed DMA protocols. Fast type-F DMA for reduced PCI bus usage. Interrupt Controller programmable for edge/levelsensitivity; supports 15 interrupts. Power Management logic (sleep/resume logic). Real-Time Clock w/ 256-byte battery-backedCMOS SRAM. Two fast IDE interfaces support up to four IDEdrives or devices.Universal Serial Bus (USB) SupportTwo external USB ports support USB peripheral devices.The system board supports standard universal hostcontroller interface (UHCI) with UHCI-compatible softwaredrivers. Support for isochronous and asynchronous transfertypes. Automatic mapping of function to driver andconfiguration. Error handling and fault recovery mechanisms built intoprotocol.
