HP Vectra VE4 Manuale utente
Vectra 4E/xx Technical Reference 1 System Overview •• 1
HP Vectra VE 4/xx Series PC Technical Reference
Manual Hardware and BIOS
Printed Manual Information
Trademarks
Preface
1 System Overview
High-Level System Architecture
System Board
System Board Diagram
Backplane Diagram
DX2/DX4 Type Processors
WB/WT Type Processors
Write-Through Mode
Write-Back Mode
Main Processor Chipset
I/O Chip
Video Graphics Accelerator Chip
System Physical Characteristics
Electrical Specifications
Power Consumption
Operating Environment
2 Summary of HP System BIOS
I/O Addresses
I/O Port Mapping
Memory Mapping
System Board Component Addressing
3 Integrated Ultra VGA Controller
Main Video Features
Video Memory
Video Resolutions
VESA Connector
4 System Hardware Tests
Shadow RAM Features
POST Features
POST Errors
POST Tests
Vectra 4E/xx Technical Reference 1 System Overview •• 2
Printed Manual Information
© 1995 Hewlett-Packard Company
Vectra 4E/xx Technical Reference 1 System Overview •• 3
Trademarks
Microsoft®, MS-DOS® and Windows NT® are U.S. registered
trademarks of Microsoft Corporation.
Logitech® is a registered trademark of Logitech Corp.
AutoCAD® is a U.S. registered trademark of Autodesk Inc.
PC-AT® is a registered trademark of IBM.
Super I/O® is a trademark of National Semiconductor Corp.
Vectra 4E/xx Technical Reference 1 System Overview •• 4
Preface
This document provides a useful source of technical information about the HP Vectra VE
4/xx Series PCs. It has been written for those engineers and technicians who are required to
provide system level support. The reader is assumed to have a detailed understanding of
PC-AT compatible microprocessor functions and digital addressing techniques.
Please note that this document does not include detailed descriptions of BIOS functionality.
Additional information may be obtained from other sources such as the component
manufacturer's reference documentation.
Bibliography
For additional information, please refer to the following documents:
•HP Vectra VE 4/xx Series PC Users Guide (supplied with the PC).
•HP Vectra VE 4/xx Series PC Familiarization Guide (D35XX+49A+90001).
•HP Vectra PC Service Handbook - 8th edition (5963-6104).
•PC87303VUL Super I/O Sidewinder Lite National Semiconductor Corporation.
•SiS 85C496/497 Chipset Silicon Integrated Systems Corporation.
•Trio64 Graphics Accelerator S3 Incorporated
Vectra 4E/xx Technical Reference 1 System Overview •• 5
1 System Overview
Vectra 4E/xx Technical Reference 1 System Overview •• 6
High-Level System Architecture
The HP Vectra VE 4/xx Series PCs incorporate the Silicon Integrated Systems (SiS)
85C496/85C497© chipset and have the following high-level architecture:
Vectra 4E/xx Technical Reference 1 System Overview •• 7
System Board
The system board has the following main features:
•486 processor (50, 66 or 100 MHz)
•Enhanced IDE (Integrated Drive Electronics) supporting four fast IDE drives
•high performance PCI bus
•fast 64-bit graphics processor
•video memory of 1 MB, upgradable to 2 MB
•BIOS stored in Flash ROM (for easy upgradeability)
•BIOS support for Plug and Play
•preloaded Desktop Management Interface (DM I) software, DOS and Windows software
•Energy Star compliant power management
•main memory of 4 MB or 8 MB, upgradable to 64 MB
•256 KB cache upgrade option
•four device shelves:
◊◊ two with front access for one 3.5-inch device and one 5.25-inch device
◊◊ two internal, for hard disk drives
•four free slots for accessory boards, allowing the installation of:
◊◊ two ISA boards and two PCI boards or
◊◊ three ISA boards and one PCI board
•one parallel and two serial communications ports
For additional information, see “System Physical Characteristics”.
Vectra 4E/xx Technical Reference 1 System Overview •• 8
System Board Diagram
Vectra 4E/xx Technical Reference 1 System Overview •• 9
Backplane Diagram
The backplane provides the following connectors and slots:
•one PCI connector
•one PCI/ISA combination connector
•one ISA connector
•three full-length slots
•one half-length slot
Jumpers must be correctly set for the DX2 or DX4 type processor and for WB (Write-Back)
or WT (Write-Through) line useage.
Vectra 4E/xx Technical Reference 1 System Overview •• 10
DX2/DX4 Type Processors
The CLKMUL pin is controlled by jumper JP16 which is defaulted to x3 mode (DX4). As the
DX2 and DX4 are the same component running at a different clock speed, the jumper
cannot be left in the DX4 position otherwise the DX2 will also run in x3 clock mode.
The trace on the non-component side of the board which connects pin numbers 2 and 3 of
JP16 must be cut. Pin 1 of JP16 can be identified by the square solder pad. JP16 must then
be added to the board. The 1-2 connection is the DX2 position and the 2-3 connection is the
DX4 position.
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