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IOE Controller
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- PCI 64-bit I/O bus
- 2KByte I/O read-ahead/write behind buffers
- PS/2 keyboard and mouse interface
- Ethernet interface
- 10/100 Mbit/Second media access controller
- Media independent interface to 10/100 TX transceiver
- Interface to Super I/O Chip for serial/parallel interface
- Dual high-speed serial interfaces
- 1284 enhanced parallel port
- Interface to Real Time Clock Chip
- Interface to Flash System ROM
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ISA Bus Interface
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- Connects serial/parallel PC peripherals
- Game port devices
- External Dallas DS1687 calendar clock
- Up to 2 MB of flash-ROM
- NIC serial PROM
- Five DMA channels are available for the
serial/parallel interfaces
- Super I/O device provides:
- 2 high-speed 16C550C serial ports
- Clock prescalers on both serial ports
- Serial ports supports MIDI and
normal baud rates up to 460.8Kb
- EPP/ECP-1284 high speed parallel port
with downward compatible mode
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Ethernet Interface
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- 10/100 BaseT Autosensing
- Half-duplex CSMA-CD & full-duplex circuit switched modes
- IP checksum computed for all received packets
- Multicast address filtering, using 64 bit hash buckets
- Flexible transmit and receive buffering
- Automatic transmit padding of short packets to min Ethernet length
- Programmable receive interrupt delay time
- Programmable receive gathering of short packets into single buffers
- Programmable inter-packet gap spacing
- Functional subset of IOC3 Ethernet interface
- Actual transmit/receive packets are stored in main memory
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SCSI via 64 bit PCI Bus
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- External 40Mb Fast/Wide
- Internal 40Mb Fast/Wide
- System drive
- One Option drive
- CDROM drive
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I²C Interface
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- Controls external codecs
- Hardware collision detection
- Software backoff/retry mechanism for bus arbitration
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Video I/O
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- Input Filtering/MIP-Mapping, Color Conversion, DMA
- Output DMA, Color Conversion, Filtering
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Audio I/O DMA
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- Synchronization with video
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PCI Expansion Bus
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- Need to describe where/how this is accessed? Next Gen?
- Support for up to five external 33.33 Mhz bus master devices
- Supports minimum of 3 64-bit slots and 2 on-board SCSI
- 32-bit or 64-bit
- Read-ahead buffers to enable high-performance DMA
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