User's Manual 7
1.5 Chipset
The Intel 82430VX PCIset consists of the 82437VX System Controller (TVX),
82438VX Data Path (TDX) and one 82371SB PCI ISA/IDE Xcelerator (PIIX3) bridge
chip.
82437VX System Controller (TVX), 82438VX Data Path (TDX)
The Intel 430VX PCIset provides all control signals necessary to drive a second level
cache and the DRAM array, including multiplexed address signals. The 430VX
PCIset also controls system access to memory and generates snoop controls to
maintain cache coherency. The 82437VX comes in a 208-pin QFP package and
82438VX comes in a 100-pin QFP package.
82371SB PCI ISA/IDE Xcelerator (PIIX3)
The PIIX3 provides the interface between the PCI and ISA buses and integrates a dual
channel fast IDE interface capable of supporting up to 4 devices. The PIIX3
integrates seven 32-bit DMA channels, one 16-bit timer/counters, two eight-channel
interrupt controllers, PCI -to-AT interrupt mapping circuitry, NMI logic, ISA refresh
address generation, and PCI/ISA bus arbitration circuitry together onto the same
device. The PIIX3 comes in a 208-pin QFP package.
IDE Support
The HOT-559(S) main board provides two independent high performance bus-
mastering PCI IDE interfaces capable of supporting PIO Mode 3 and Mode 4 devices.
The system BIOS supports Logical Block Addressing (LBA) translation modes as well
as ATAPI (e.g. CD-ROM) devices on both IDE interfaces. Detection of IDE device
transfer rate and translation mode capability is automatically determined by the
system BIOS.
Onboard Adaptec AIC-7880 SCSI Controller (HOT-559 S)
The onboard Adaptec AIC-7880 SCSI controller is a Wide PCI-to-SCSI host adapters
provide a powerful multitasking interface between system's PCI bus and SCSI devices
(disk drives, CD-ROM drives, scanners, tape backups, removable media drives, etc).
Up to a total of 15 SCSI devices can be connected to the onboard 50-pin 8-bit SCSI-II
and 68-pin 16-bit Ultra wide SCSI connectors.
