HP Vectra VT 6/xxx HP Vectra XU 6/xxx and VT 6/xxx PCs - Technical Reference M - Page 14

Ultra I/O, SoundBlaster 16, Intel 82450KX chip-set, Gold Capacitor, HP VectraXU 6/150 PC

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Page 14 highlights

Ultra I/O Chip The Ultra I/O chip is located just slightly above and to the right of the ISA slots. It is a combined controller on the ISA bus for the flexible disk drive connector, and for the one parallel and two serial communications ports. Audio Chip The SoundBlaster 16 chip is located to the right of the Ultra I/O chip, near the bottom right hand edge of the board. This provides the audio interface, and is driven from the ISA bus. Chip-Set The Intel 82450KX chip-set comprises eight chips. Six of them are concerned with controlling memory accesses, and are located below the memory module sockets. These are the four datapath units, the memory controller chip, and the Mem/PL bridge chip. They are described in the sub-section of this chapter entitled "Main Memory". The remaining two chips are the PL/PCI bridge chip, which is described in the section entitled "Devices on the PCI Bus", and the PCI/ISA bridge chip, which is described in the section entitled "Devices on the ISA Bus". Gold Capacitor A Gold Capacitor is provided instead of a battery, and can store enough energy to power the CMOS configuration memory for over a week after the mains power has been disconnected. Architectural View The following block diagram gives an architectural view of the HP VectraXU 6/150 PC. The next section describes the devices on the system board which are associated with the Processor-Local (PL) bus. The section after describes the devices on the system board that are associated with the Peripheral Component Interconnect (PCI) bus. The final section describes the devices on the system board that are associated with the Industry Standard Architecture (ISA) bus.

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Ultra I/O Chip
The
Ultra I/O
chip is located just slightly above and to the right of the ISA slots. It is a combined
controller on the ISA bus for the flexible disk drive connector, and for the one parallel and two
serial communications ports.
Audio Chip
The
SoundBlaster 16
chip is located to the right of the Ultra I/O chip, near the bottom right hand
edge of the board. This provides the audio interface, and is driven from the ISA bus.
Chip-Set
The
Intel 82450KX chip-set
comprises eight chips. Six of them are concerned with controlling
memory accesses, and are located below the memory module sockets. These are the four
datapath units, the memory controller chip, and the Mem/PL bridge chip. They are described in the
sub-section of this chapter entitled “Main Memory”. The remaining two chips are the PL/PCI bridge
chip, which is described in the section entitled “Devices on the PCI Bus”, and the PCI/ISA bridge
chip, which is described in the section entitled “Devices on the ISA Bus”.
Gold Capacitor
A
Gold Capacitor
is provided instead of a battery, and can store enough energy to power the
CMOS configuration memory for over a week after the mains power has been disconnected.
Architectural View
The following block diagram gives an architectural view of the
HP VectraXU 6/150 PC
. The next
section describes the devices on the system board which are associated with the Processor-Local
(PL) bus. The section after describes the devices on the system board that are associated with the
Peripheral Component Interconnect (PCI) bus. The final section describes the devices on the
system board that are associated with the Industry Standard Architecture (ISA) bus.