Micros Systems Eclipse Setup Manual page 60

PCWS Eclipse Hardware Configuration
What's Inside?
82802A Firmware Hub
The 82802A version of the Firmware Hub contains 4M of Flash Memory divided
into 8 64K blocks, each of which can be independently write protected. The Intel
i810 chipset does not support the ISA bus. Thus, the Firmware Hub replaces the
traditional Flash EPROM located on the ISA Bus. It stores the system BIOS,
video BIOS, Altera FPGA code, and LAN boot code.
Hub Based Architecture
Figure 3-13 shows how the Hub Interface interconnects each component of the
chip set. The Hub Interface is a private PCI-like interface between the GMCH and
the ICH and between the ICH and Firmware Hub. The Hub Interface operates at
33MHz, synchronous with the PCI Bus.
3-10
Figure 3-13: The Intel i810 Chipset Architecture
PCWS Eclipse Setup Guide