Air 486VP User manual
486VP
VL/PCI System Board
USER'S MANUAL
Revision 1.0
!!! WARNING !!!
Be careful while installin VESA Local Bus cards on to your system
board. Keep the followin tips in mind to properly install and remove a
VESA Local Bus card.
1. Always install/remove the card vertically strai ht down/up. Never
at an angle! Insertin the card at an an le may dama e the pins
in both the AT and VESA Local Bus slots.
2. To install the board vertically, hold the card in the middle. Make sure
that the card is even with both slots. Then ently fit the card into the
slots with equal pressure at both ends.
Manufacturer warrant does not cover damage caused to
the s stem board b improper installation or removal of
VESA Local Bus cards.
486VP System Board User's Manual Pa e 1
486VP QUICK REFERENCE
I. STANDARD CMOS SETUP
: Current date
: Current time
: Hard disk parameters
: Hard disk parameters
: Type of floppy drive installed
: Type of floppy drive installed
: Type of video card installed
II. BIOS FEATURES SETUP
Virus Warning: Disabled
CPU Internal Cache: Enabled
External Cache: Enabled
Boot Sequence: A,C
Swap Flopp Drive: Disabled
Boot Up Flopp Seek: Enabled
Boot Up Numlock Status: On
IDE HDD Block Mode Transfer: Disabled
Memor Parit Error Check: Enabled
Securit Option: Setup
S stem BIOS Shadow: Enabled
Video BIOS Shadow: Enabled
C8000-CBFFF Shadow: Disabled
CC000-CFFFF Shadow: Disabled
D0000-D3FFF Shadow: Disabled
D4000-D7FFF Shadow: Disabled
D8000-DBFFF Shadow: Disabled
DC000-DFFFF Shadow: Disabled
E0000-E3FFF Shadow: Disabled
E4000-E7FFF Shadow: Disabled
E8000-EBFFF Shadow: Disabled
EC000-EFFFF Shadow: Disabled
Pa e 2 486VP System Board User's Manual
II. CHIPSET FEATURES SETUP
25 MHz 33 MHz 40 MHz 50 MHz
AT Bus Clock CLK/3 or
CLK/6
CLK/2 or
CLK/4
CLK/2.5 or
CLK/5
CLK/3 or
CLK/6
SRAM Read
Burst
3111 3222 3222 3222
SRAM Write WS 0WS 0WS 1WS 1WS
Special SRAM
Wait State (WS)
Disabled Enabled Disabled Disabled
DRAM Write WS 0WS 1WS 1WS 1WS
DRAM Read WS 2WS 3WS 3WS 3WS
RAS Precharge 2 Sysclk 3 Sysclk 3 Sysclk 3 Sysclk
RAS to CAS
Dela
1 Sysclk 1 Sysclk 2 Sysclk 2 Sysclk
F0000 Cacheable: Enabled
C0000 Cacheable: Enabled
Cacheable Range: 0-128M
DRAM Page Mode: Slow Pa e Mode
15-16MB Access: Normal
1MB Cache Memor : Disabled
VGA T pe: Standard
PCI Arbitration Rotate Priorit : Disabled
PCI Post-Write Fast: Disabled
CPU Master Post-Write Buffer: 4
CPU Master Post-Write Burst Mode: Disabled
CPU Master Fast Interface: Disabled
PCI Master Post-Write Buffer: 4
PCI Master Post-Write Burst Mode: Disabled
PCI Master Fast Interface: Disabled
CPU Master DEVSEL# Time-Out: 6 PCICLK
PCI Master DEVSEL# Time-Out: 4 PCICLK
486VP System Board User's Manual Pa e 3
PREFACE
Thank you for purchasin the 486VP system board. This document ives
an aid to the confi uration and installation of this system board.
The information in this document is subject to chan e without notice.
This document contains information protected by copyri ht. All ri hts are
reserved. No part of this document may be used or reproduced in any
forms or by any means, or stored in a database or retrieval system,
without prior written permission.
TRADEMARKS
Intel is a re istered trademark of Intel Corporation.
IBM is a re istered trademark of International Business Machines
Corporation.
Microsoft is a re istered trademark of Microsoft Corporation.
VESA is a re istered trademark of Video Electronics Standard
Association.
All other trademarks used in this manual are the property of their
respective owners.
Pa e 4 486VP System Board User's Manual
TABLE OF CONTENTS
486VP QUICK REFERENCE
I. STANDARD CMOS SETUP
II. BIOS FEATURES SETUP
II. CHIPSET FEATURES SETUP
CHAPTER 1: INTRODUCTION
CHAPTER 2: JUMPERS & CONNECTORS
SYSTEM BOARD JUMPERS
CPU External Clock Jumpers
CPU Type Jumpers
CPU Power Voltage Jumper
Cache Size Jumpers
Memory Bank Jumpers
PC Bus nterrupt Jumpers
Display Type Jumper
Clear CMOS Data Jumper
FLASH B OS Jumper
Green PC Jumpers
Reserved Jumpers
SYSTEM BOARD CONNECTORS
Power Supply Connectors
Keyboard Connector
Power LED and Keyboard Lock Connector
Speaker Connector
Reset Connector
Turbo Switch Connector
Turbo LED Connector
CHAPTER 3: HARDWARE INSTALLATION
THE DRAM SIMMs
nstalling DRAM S MMs
INSTALLING A VL-BUS CARD
EQUIPMENT REQUIRED
CHAPTER 4: BIOS SETUP
ENTERING SETUP
STANDARD CMOS SETUP
BIOS FEATURES SETUP
CHIPSET FEATURES SETUP
POWER MANAGEMENT SETUP
PCI CONFIGURATION SETUP
LOAD BIOS DEFAULTS
LOAD SETUP DEFAULTS
486VP System Board User's Manual Pa e 5
PASSWORD SETTING
IDE HDD AUTO DETECTION
SAVE AND E IT SETUP
E IT WITHOUT SAVING
CHAPTER 5: KEYBOARD HOT KEYS
SYSTEM SPEED
APPENDIX A: BIOS HARD DISK TYPE
APPENDIX B: MEMORY MAPPING
APPENDIX C: AT I/O ADDRESS MAP
APPENDIX D: INTERRUPT ASSIGNMENTS
APPENDIX E: SPECI ICATION
Pa e 6 486VP System Board User's Manual
CHAPTER 1: INTRODUCTION
The 486VP system board adds to our 486 product line hi h inte ration
and cost effective solution without compromisin performance and
quality. With top speed at 50 MHz, VL-Bus and PCI Bus on the same
board, and maximum 1MB Write-Back cache, the 486VP dramatically
boosts system throu hput for even the most demandin applications.
The 486VP offers features and functionality exceedin any other system
board in its class, includin :
CPU:
·Intel i486DX4, i486DX2, i486DX, i486SX, i487SX, P24T, and
Overdrives.
Cache Memor :
·Supports 256KB, 512KB, and 1MB cache sizes.
Main Memor :
·Supports 1Mx9, 4Mx9, 1Mx36, 2Mx36, 4Mx36, and 8Mx36 SIMM
modules for up to 32 MBytes on-board memory.
Slots:
·Two 32-bit VESA Local Bus (VL-Bus) slots.
·Four PCI Local Bus slots.
·Four 16-bit ISA bus slots.
Green PC:
·Sophisticated system power mana ement and system event
monitorin throu h BIOS setup.
On-Board Batter :
486VP System Board User's Manual Pa e 7
·3.6V/60mA on-board battery.
Pa e 8 486VP System Board User's Manual
CHAPTER 2: JUMPERS & CONNECTORS
When working with the
486VP, it is extremel
important that ou avoid
static electricit . Alwa s
ground ourself b wearing
a wrist or ankle strap.
Fi ures 1 on the next pa e shows the component layout of the 486VP
system board with locations of the system board jumpers and
connectors. Note that most jumpers and connectors on the system board
are labeled with proper names with pin 1 marked as "1" or thick line. To
avoid dama in the board and to have proper operation caution should
be taken when connectin these components.
SYSTEM BOARD JUMPERS
Jumpers are used to select between various operatin modes. A jumper
switch consists of two, three, or four old pins projectin from the system
board. Placin the plastic jumper cap over two pins connects those pins
and makes a particular selection. Usin the cap to cover two pins in this
way is referred to as shortin those pins (ON position). If the cap is not
placed on any pins at all, this is referred to as leavin the pins open (OFF
position).
Note: When you open a jumper, leave the plastic jumper cap attached
to one of the pins so you don't lose it.
486VP System Board User's Manual Pa e 9
Table of contents
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