Page 1
NOTICE
Copyright 1995.
All Right Reserved
Manual Version R3.3
All information, documentation, and specifications contained in this manual are subject to change
without prior notification by the manufacturer.
The author assumes no responsibility for any errors or omissions which may appear in this docu-
ment nor does it make a commitment to update the information contained herein.
TRADEMARKS
OPTi is a registered trademark of OPTi, Inc.
PC/AT is a registered trademark of International Business Machine Corporation.
Intel is a registered trademark of Intel Corporation.
Pentium is a registered trademark of Intel Corporation.
AMI is a registered trademark of American Megatrends Inc.
All other brand and product names referred to in this manual are trademarks or registered trade-
marks of their respective holders.
User's Manual 1
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VL-MAINBOARD HOT-419DZ (REV 3)
TABLE OF CONTENTS
PREFACE ............................................... 4
CHAPTER 1 INTRODUCTION ................................. 5
Specification ................................................................ 5
419 Mainboard Description .................................................... 7
419 Mainboard Placement ..................................................... 9
CHAPTER 2 JUMPER SETTING ................................ 10
System Clock Selection ...................................................... 12
CPU Type Selection ......................................................... 12
CPU Voltage Selection ....................................................... 19
Cache Size Selection ........................................................ 20
VESA Local Bus Configuration ................................................. 23
CPU DRY# Signal Delay Configuration ......................................... 24
CPU ADS# Signal Configuration ............................................... 24
External Power Management Control Port ....................................... 25
Connectors ................................................................. 26
Factory Default Settings ...................................................... 26
CHAPTER 3 MEMORY CONFIGURATION ........................ 27
Memory Configuration Table - Mode 1 ......................................... 29
Memory Configuration Table - Mode 2 ......................................... 30
CHAPTER 4 BIOS S ETUP .................................. 31
BIOS Setup Feature .......................................................... 32
Using the Keyboard with WinBIOS Setup ....................................... 34
Standard Setup ............................................................. 35
Advanced Setup ............................................................ 37
Chipset Setup ............................................................... 41
Power Management Setup .................................................... 45
2 User's Manual
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Preface
Congratulation on purchasing this 419 mainboard. 419
mainboard is a highly integrated IBM PC/AT compatible system board designed to accommodate 25MHz to 100MHz 486
processors, and features a high-performance secondary cache
memory architecture from 64KB up 512KB. This mainboard
also features eight ISA bus expansion slots combined with three
VL-bus expansion slots and the most flexible green function.
The combination of flexible CPU supports, a large secondary
cache memory size, advanced VL-bus architecture, and the green
function make this mainboard ideal for building powerful systems that must met the demanding requirements of today's
graphical user interfaces and advanced operating systems.
User's Manual 3
Page 4
Chapter1 Introduction
Specification
CPU Function
CPU clock: 25/33/40/50/66/80/100/120/133 MHz
Supporting Intel 486SX/DX/DX2/DX4,
AMD Am486 Enhanced, 486DX/DX2/DX4,
Am5x86-P75
Cyrix Cx486S/DX/DX2, Cx5x86,
Supporting S-Series CPU
Chipset
OPTi 82C895 and 82C602
Supporting L1 write back cache
Supporting main, video and adapter shadow pro-
grammable
Shadow RAM cacheable function programmable
Memory
Supporting four banks of local DRAM system
ranging from 1MB to 128MB of host memory
Supporting 256K x 36/32 (1MB), 512K x 36/32
(2MB), 1M x 36/32 (4MB), 2M x 36/32 (8MB), 4M x
36/32 (16MB), 8M x 36/32 (32MB), and 16M x 36/
32 (64MB) 72-pins SIMM
Cache Memory
Supporting 64K, 128KB, 256KB, and 512KB secondary cache.
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Power Management Function
Provides two power management modes : Auto and
SMI
Auto_mode used to accommodate non S-series CPU
SMI_mode used to accommodate S-series CPU
Supporting monitor sleep mode control
Supporting individual IDE hard disk drive power down
control
Supporting EPMI (External Power Management
Interface) port for monitor power on/off control
Supporting MicroSoft APM (Advanced Power Manage-
ment) function
Expansions
32-bit VL-bus slot x 3 (Support one or two bus
mastering, depending on memory configuration mode)
16-bit ISA slot x 6
8-bit ISA slot x 2
BIOS
Licensed advanced AMI WinBIOS
Board Design
Dimension : 22cm x 26cm
User's Manual 5
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419 Mainboard Description
The major components
of 419 maniboard are illustrated and described
right and below. Please
take a minute to become familiar with the
board design.
6
4
1. Chipset ASIC
419 mainboard is designed around a set of
highly integrated OPTi
ASIC, which offers optimum performance on
VL and ISA base system
for a cache controller,
a local DRAM controller, and power management control.
1
7
5
2
1
8
3
2. Microprocessor
419 mainboard accept member of the 486 family of high performance 32-bit microprocessors in PGA package. The mainboard
is designed to run at a clock speed from 25 to 50MHz on CPU bus
clock, and 25 to 133MHz on CPU core clock.
3. Secondary Cache Architecture
419 maniboard features a secondary cache memory architecture,
which complements the 8KB or 16KB internal cache of the 486
family. It support secondary cache with the size of 64KB, 128KB,
256KB, and 512KB.
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4. Memory Architecture
419 mainboard features four 72-pin SIMM (Single In-line Memory
Module) sockets organized into four banks, which allow flexible
memory configuration and expansion. It may use 1MB, 2MB,
4MB, 8MB, 16MB, 32MB, and 64MB SIMM to expand memory
from 1MB to 128MB.
5. VL-bus Expansion Slots
419 mainboard provides three 32-bit VL-bus expansion slots, which
may accommodate many third-party expansion cards and increase
flexibility in designing custom platforms.
6. ISA bus Expansion Slots
419 mainboard provides six16-bit and two 8-bit ISA expansion
slots, which may accommodate many third-party expansion cards
and enormous flexibility in designing custom platforms.
7. 5V- 3.3/3.45/4.0V Voltage Regulator
For Intel 486DX4 (P24C), AMD Am486DX2-80/DX4-100/Am5x86P75, and Cyrix 486DX2-66/80/100/Cx5x86 CPU, 419 mainboard
provides a voltage regulator to regulate voltage from 5V to 3.3/
3.45/4.0V.
8. System BIOS
419 mainboard provides a licensed AMI system WinBIOS which
is particularly designed to offer optimum performance of the
mainboard.
User's Manual 7
Page 8
419 Mainboard Placement
8 User's Manual
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Chapter2 Jumper Setting
System Clock Selection
419 mainboard features
a clock generator to provide adjustable system
clock frequency. JP21,
JP22, and JP23 are all 3pin jumper which determine the clock frequency from 20MHz to
50MHz.
System Clock Setup For 486 except Intel 486DX4
& P24T
20MHz System Clok
33MHz System Clok
User's Manual 9
25MHz System Clok
40MHz System Clok
Page 10
50MHz System Clok
System Clock Setup For Intel 486DX4 & P24T
25MHz System Clok
50MHz System Clok
33MHz System Clok
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CPU Type Selection
419 mainboard accepts any member of the 486 series microprocessors. If you try to install or upgrade the CPU, you must
set the CPU type jumpers accordingly.
The CPU type is set through a combination of the the jumper
and resistor pack. Please follows the procedure very carefully, or contact the local service company. Otherwise the
system may not function properly.
Note : It is highly recommended that a CPU cooling fan is
attached to the CPU to ensure system stability.
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Page 12
Intel 486DX/DX2
Intel 486SX, UMC U5-S
12 User's Manual
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Intel 486DX/DX2/DX4 S-Series
Intel 486DX4 Clock Multiplier - JP65
For Intel 486DX4
(P24C) CPU, 419
mainboard offers
jumper JP65 to adjust CPU core clock
frequency to 2 or 3
times of external
bus clock frequency.
Intel 486DX4 Clock Multiplier
CPU Type
DX4-100 3 : 1 100MHz 33MHz
DX4-100 2 : 1 100MHz 50MHz
DX4-75 3 : 1 75M Hz 25MHz
Core/ Bus
Clock
Ratio
JP65
Core Clock
Internal
External
Bus Clock
User's Manual 13
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Intel 486SX-S Series
Intel P24D (486DX2 Write-Back Cache)
Intel P24D CPU Cache Line
Cache Scheme JP59
Write-Back
Write-Through
Other CPU
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Intel P24T
Intel P24T CPU Cache Line
Cache Scheme JP58
Write-Back
Write-Through
Other CPU
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AMD Am486DX/DX2/DX4 (NV8T)
AMD 486DX2/DX4 Clock Multiplier - JP65
For AMD Am486DX2-80 and Am486DX4-100 CPU, 419
mainboard also offers jumper JP65 to adjust CPU core
clock frequency to 2 or 3 times of external bus clock frequency.
AMD 486DX2/DX4 Clock Multiplier
CPU Type
DX4-120 3 : 1 120MHz 40MHz
DX4-100 3 : 1 100MHz 33MHz
DX4-100 2 : 1 100MHz 50MHz
DX2-80 3 : 1 75MHz 25MHz
DX2-80 2 : 1 80MHz 40MHz
16 User's Manual
Core/Bus
Clock
Ratio
JP65
Internal
Core Clock
External
Bus Clock
Page 17
AMD Am486 Enhanced (SV8B),
Am5x86-P75,
Cyrix Cx5x86
AMD Am486 Enhanced, Am5x86-P75,
Cyrix Cx5x86 Clock Multiplier - JP65
For AMD Am486 Enhanced, Am5x86-P75, and Cyrix Cx5x86
CPU, 419 mainboard offers jumper JP65 to adjust CPU core
clock frequency from 2 to 3 or 4 of external bus clock frequency.
CPU Type
AMD Am486DX Enhanc e -100 3 : 1 100MHz 3 3MHz
AMD Am486DX Enhanc e -120 3 : 1 120MHz 4 0MHz
AMD Am5x86-P75 4 : 1 133MHz 33MHz
Cyrix Cx5x86-100 3 : 1 100MHz 33MHz
Cyrix Cx5x86-120 3 : 1 120MHz 40MHz
Cyrix Cx5x86-133 4 : 1 133MHz 33MHz
Co re/Bus
Cloc k
Ratio
JP65
Inter nal
Co re
Clock
External
Bus Clock
User's Manual 17
Page 18
Cyrix Cx486S (M6)
Cyrix Cx486DX/DX2/DX4 (M7)
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CPU Voltage Selection
For Intel 486DX4, AMD Am486DX2-80/DX4-100, and Cyrix
Cx486DX2-66/DX2-80 CPU, 419 mainboard features single
voltage regulator to generate the voltage for CPU (Vcc) from
5V to 3.3/3.45/4.0V. JP64 and JP73 are provided for voltage
setting between 5V and 3.3/3.45/4.0V.
CPU Voltage Select ion
CPU Voltage JP64 JP73 Remark
5V Don't Care For 5V CPU
3.3 V '1 - 2
3.45 V O pen For AMD 3V 486DX2/DX4 CPU
4.0 V
'2 - 3 For Cyri x 4V Cx486DX2 CPU
For Intel 3V 486DX4, Cyrix 3.3V
Cx486DX2 CPU
User's Manual 19
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Cache Size Selection
419 mainboard supports
secondary cache
memory sizes of
64KB,128KB, 256KB,
and 512KB. Cache
memory is realized by
eight Data SRAM and
one Tag SRAM. Cache
memory is organized
into two banks, with
four SRAM assigned to
each bank. The Data
SRAM used in 419
mainboard is 8Kx8,
32Kx8, 64Kx8, and
128Kx8, Tag SRAM type
can be 8Kx8, and
32Kx8. (64Kx8 Data
SRAM available only on
some 419 version)
64 KB Cache Memory
Cache Size
64KB 8K x 8 8K x 8 8K x 8
20 User's Manual
Bank 0
Data RAM
U5, U6, U7, U8
Bank 1
Data RAM
U9, U10, U11, U12
Tag RAM U13
Page 21
128 KB Cache Memory
Cache Size
Bank 0
Dat a RAM
U5, U6, U7, U8
Bank 1
Dat a RAM
U9, U10, U11, U12
Tag RAM U13
128KB 32K x 8 Empty 32K x 8
256 KB Cache Memory
(Double Bank)
Cache Size
Bank 0
Data RAM
U5, U6, U7, U8
256KB 32K x 8 32K x 8 32K x 8
Bank 1
Data RAM
U9, U10, U11, U12
Tag RAM U13
256 KB Cache Memory
(Single Bank)
Cache Size
Bank 0
Data RAM
U5, U6, U7, U8
256KB 64K x 8 Empty 32K x 8
User's Manual 21
Bank 1
Data RAM
U9, U10, U11, U12
Tag RAM U13
Page 22
512 KB Cache Memory
Cache Size
Bank 0
Data RAM
U5, U6, U7, U8
Bank 1
Data RAM
U9, U10, U11, U12
Tag RAM U13
512KB 128K x 8 Empty 32K x 8
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VESA Local Bus Configuration
419 mainboard provides JP34 for regulating VESA Local bus
card speed to match CPU speed, and JP33 for selecting VLbus card's high speed write wait state.
Note: If a similar function is supplied on user's VL-bus card,
this section can be ignore. (Also refer to the next section of
CPU RDY# delay)
VESA Local Bus Config JP33 JP34
VL-Bus Speed > 33MHz
VL-Bus Speed < 33MHz X
High Speed Write 0 W/S
High Speed Write 1 W/S
X
User's Manual 23
X
X
Page 24
CPU RDY# Signal Delay Configuration
419 mainboard provides JP55
and JP69 to configure CPU
RDY# signal delay. there are
two compositions - Setup 1
and Setup 2. By selecting one
of those two setups, the user
may find a proper way to make
VL-bus devices work well under any clock speed.
CPU RDY# Delay JP55 JP69 Recommended
33MHz or 50MHz system
clock with fast VL-bus
Setup 1
Setup 2
device s
33MHz or 50MHz system
clock with slow VL-bus
device s
CPU ADS# Signal Configuration
Some VL-bus interface card may need
more address hold
time (ADS#) in
486DX-50 or DX2-
66. Otherwise, always keeps pin 2
and 3 of JP36 short.
24 User's Manual
CPU ADS# Si gnal
Configuration
No rmal Opera tion
Delay CPU ADS#
Signal
JP36
Page 25
External Power Management Control Port
419 mainboard provides two External Power Management
Control Ports, JP63 and JP68 to facilitate power saving.
When the system power management timeout occurs, pin 1
of JP63 goes down to low level from high. Once the system
is resumed, JP63 pin 1 return to high. The JP63 can be connect to the Green Function Power Supply for monitor's power
on/off control, or it can be connected to a LED as a power
management indicator.
419 mainboard also provides an EPMI (External Power Management Interface) connector JP68. If there is an external
power saving push button on your computer case, connect it
to JP68.
When the button is pressed, it forces the system enter to power
saving mode. When the button is pressed again, the system
will resume from power saving mode.
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Connectors
Connectors
ITEM FUNCTION
JP30 * Color/Monochrome Display Switch
PL1
KB1 Keyboard Connector
J1
J2 Power LED and KeyLock Connector
JP18
JP17 ** Hardware Turbo Switch Connector
JP16 Turbo LED Connector
S1
JP68 EPMI Connector
JP63
* Close for Color, Open for Monochrome Display.
** 419 mainboard doesn't support software turbo switching.
*** JP63 (G-LED) also used as external power control port.
Power Connector
External Battery Connector
Speaker Connector
Hardware Reset Connector
*** G-LED, Green Function Indicator Connector
Factory Default Settings
Factory D efault Settings
JP53 Pin 1 - 2 Close
JP67 Close
JP74 Pin 2 - 3 Close
JP77 Pin 2 - 3 Close
JP79 Pin 1 - 2 Close
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Chapter3 Memory Configuration
419 mainboard provides great flexibility to support a number
of different on-board DRAM configurations.
419 mainboard provides two memory configuration modes.
On mode 1, memory is organized into four banks , with one
SIMM socket assigned to each memory bank. The mainboard
supports 1MB, 4MB, 16MB, and 64MB fast-page mode 72pin SIMMs in each socket.
On mode 2, memory is organized into six banks , with one
SIMM socket assigned to two memory banks, and only three
SIMM sockets can be used. The mainboard supports 1MB,
2MB, 4MB, 8MB, 16MB, 32MB, and 64MB fast-page mode
72-pin SIMMs in each socket.
The following table shows the majority of memory configuration of 419 mainboard.
Memory Configuration
mode 1
User's Manual 27
Memory Configuration
mode 2
Page 28
419 mainboard provides two memory configuration modes,
mode 1 and mode 2.
Jumpers JP60, JP61, JP62, JP70, JP71, and JP72 are provided
to configure the memory in one of two modes.
Note : 1. When memory configuration mode 1 is selected,
419 mainboard supports two VESA master mode Local-bus
slots, one on J20 (VL-bus slot1), and the other on J19 (VL-bus
slot 2) or J18 (VL-bus slot 3).
2. If memory configuration mode 2 is selected, 419
mainboard only supports one VESA master mode Local-bus
slot on J18 or J19, J20 is assigned to slave.
Memory Configuration Mode Selection
Mode 1
Mode 2
28 User's Manual
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Memory Configuration Table - Mode 1
Memory Configuration Reference Table - Mode 1
SIM1
BANK 0
1MB NONE NONE NONE 1MB
1MB 1MB NONE NONE 2MB
4MB NONE NONE NONE 4MB
1MB 1MB 1MB 1MB 4MB
1MB 4MB NONE NONE 5MB
1MB 1MB 4MB NONE 6MB
4MB 4MB NONE NONE 8MB
4MB NONE 4MB NONE 8MB
1MB 1MB 4MB 4MB 10MB
4MB NONE 4MB 4MB 12MB
16MB NONE NONE NONE 16MB
4MB 4MB 4MB 4MB 16MB
1MB 16MB NONE NONE 17MB
4MB 16MB NONE NONE 20MB
4MB NONE 16MB NONE 20MB
16MB 16MB NONE NONE 32MB
16MB NONE 16MB NONE 32MB
16MB 16MB 16MB 16MB 64MB
64MB NONE NONE NONE 64MB
64MB 64MB NONE NONE 128MB
64MB NONE 64MB NONE 128MB
SIM2
BANK 1
SIM3
BANK 2
SIM4
BANK 3
TOTAL
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Memory Configuration Table - Mode 2
Memory Configuration Reference Table - Mode 2
SIM 1
BANK 0/1
1MB NONE NONE 1MB
2MB NONE NONE 2MB
2MB 2MB NONE 4MB
4MB NONE NONE 4MB
2MB 4MB NONE 6MB
2MB 2MB 2MB 6MB
8MB NONE NONE 8MB
4MB 4MB NONE 8MB
4MB 8MB NONE 12MB
2MB 2MB 8MB 12MB
8MB 8MB NONE 16MB
4MB 4MB 8MB 16MB
4MB 16MB NONE 20MB
4MB 8MB 8MB 20MB
4MB 4MB 16MB 24MB
8MB 8MB 8MB 24MB
32MB NONE NONE 32MB
16MB 16MB NONE 32MB
8MB 8MB 16MB 32MB
4MB 4MB 32MB 40MB
16MB 16MB 16MB 48MB
8MB 8MB 32MB 48MB
16MB 16MB 32MB 64MB
64MB NONE NONE 64MB
32MB 32MB NONE 64MB
32MB 32MB 32MB 96MB
64MB 64MB NONE 128MB
SIM 2
BANK 2/3
SIM 3
BANK 4/5
TOTAL
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Chapter4 BIOS Setup
BIOS Setup configures system information that is stored in
CMOS RAM. WINBIOS Setup has an easy-to-use graphical
user interface that will be immediately recognizable to anyone who has ever used Microsoft Windows. WinBIOS Setup
sets a new standard in BIOS user interfaces.
Starting WinBIOS Setup
As POST executes, the following message appears :
Hit <DEL> if you want to run SETUP
Press <Del> to run WinBIOS Setup.
Bus Mouse and Microsoft Mouse Support on BIOS
Setup :
The following types of mouse devices are supported.
* PS/2- type mouse.
* Bus mouse that use IRQs 3, 4, or 5 (IRQ2 is not sup-
ported).
* Microsoft-compatible mouse.
* Logitech C-series-compatible mouses using the MM proto-
col.
WinBIOS Setup can be accessed via keyboard, mouse, or
pen. The mouse click functions are :
single click to change or select both global and current field
and double click to perform an operation in the selected field.
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BIOS Setup Feature
The WinBIOS Setup main menu, shown below, is organized
into four windows. Each window corresponds to a section
in this chapter.
Each section contains several icons. Clicking on each icon
activates a specific function. The WinBIOS Setup icons and
functions are described in this chapter. The sections are :
Setup
This section has five icons that permit you to set system configuration options such as date, time hard disk type, floppy
type, chipset parameter, power management, and peripheral I/O setup.
Utilities
This section has four icons that perform system functions.
Security
This section has one icon that control WinBIOS security features.
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Default
This section has three icons that permit you to select a group
of settings for all WinBIOS Setup options.
Each WinBIOS Setup option has two default settings. These
settings can be applied to all WinBIOS Setup options when
you select the Default section on the WinBIOS Setup main
menu. The types of default are:
Optimal
Fail-Safe
These settings provide that best performance
characteristics.
These settings are more likely to configure a
workable computer when something is wrong.
If you cannot boot the computer successfully,
select the Fail-Safe WinBIOS Setup options and
try to diagnose the problem after the computer
boots. These settings do not provide optimal
performance.
User's Manual 33
Page 34
Using the Keyboard with WinBIOS Setup
0 to 9 are used in the Virtual Keyboard and Numeric Keypad.
WinBIOS Setup has a built-in keyboard driver that uses simple
keystroke combinations :
Keystroke
<Tab> Move to the next window or field.
Move to the next field to the right, left, above, or below.
<Enter> Select in the current field.
+ Increments a value.
-
<Esc>
<PgUp>
<PgDn>
<Home>
<End>
<Alt><H>
<Alt><Spacebar>
Alphabetic keys
Numeric Keys
Decrements a value.
Closes the current operation and return to previous level.
Returns to the previous page.
Advances to the next page.
Returns to the beginning of the text
Advances to the end of the text.
Access a help window.
Exit WinBIOS Setup.
A to Z are used in the Virtual Keyboard, and are not
casesensitive.
Function
34 User's Manual
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Standard Setup
The WinBIOS Standard Setup option described in this section
are selected by choosing the appropriate high-level icon from
the WinBIOS Setup main menu selection screen. The selection window follows.
Date, Day and Time Configuration
Select the Standard option. Select the Date and
Time icon. The current values for each category
are displayed. Enter new values through the keyboard.
Floppy Drive A:, Floppy Drive B:
Move the cursor to these fields via and select the
floppy type. The settings are 360KB 51/4 inch,
1.2MB 51/4 inch, 720KB 31/2 inch, 1.44MB inch,
User's Manual 35
Page 36
or 2.88MB 31/2 inch .
Hard Disk C: Type, Hard Disk D: Type
Select one of these hard disk drive icons to configure the drive named in the option. A scrollable
screen that lists all valid disk drive types is displayed. Select the correct type and press <Enter>. If the hard disk drive is an IDE drive, select
IDE Setup from the Utility section of the WinBIOS
Setup main menu to allow WinBIOS to automatically detect the IDE drive parameters and report
them on this screen.
Using IDE Setup
If you select IDE Setup from the Utility section of
the WinBIOS Setup main menu, WinBIOS automatically finds up to four IDE hard disk drives
parameter. WinBIOS places the hard disk drive
parameters that it finds in the Hard Disk Drive
Type fields in Standard Setup.
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Advanced Setup
The WinBIOS Advanced Setup options described in this section are selected by choosing the appropriate high-level icon
from the WinBIOS Setup main menu. The selection window
is shown below.
System Keyboard
This option does not specify if a keyboard is attached to the
computer. Rather, it specifies if error messages are displayed
if a keyboard is not attached. This option permits you to
configure workstations with no keyboards. The settings are
Absent or Present.
Primary Display
Select this icon to configure the type of monitor attached to
the computer. The settings are Monochrome, Color 40 x 25,
Color 80 x 25, VGA/PGA/EGA, or Not Installed .
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Page 38
Above 1 MB Memory Test
When this option is enabled, the WinBIOS memory test is
performed on all system memory. When this option is disabled, the memory test is done only on the first 1 MB of
system memory. The settings are Enabled or Disabled .
Memory Test Tick Sound
This option enables or disables the ticking sound during the
memory test. The settings are Enabled or Disabled.
Extended BIOS RAM Area
Specify in this option if the top 1 KB of the system programming area beginning at 639K or 0:300 in the system BIOS
area in low memory will be used to store hard disk information. The settings are Top 1K or 0:300.
System Boot Up Num Lock
When On, this option turns off Num Lock when the system is
powered on so the end user can use the arrow keys on both
the numeric keypad and the keyboard. The settings are On
or Off.
Floppy Drive Seek At Boot
When this option enabled, WinBIOS performs a Seek command on floppy drive A: before booting the system. The
settings are Enabled or Disabled.
System Boot Up Sequence
This option sets the sequence of boot drive (either floppy
drive A; or hard disk drive C:) that WinBIOS attempts to boot
from after POST completes. The settings are C: , A: or A:, C:.
System Boot Up CPU Speed
This option sets the speed of the CPU at system boot time.
The settings are High or Low.
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External Cache
This option enabled or disabled secondary cache (L2) memory.
Internal Cache
This option enabled or disabled the internal cache memory
in the 486 processor.
Password Checking
This option enables the password check option every time
the system boots or the end user runs Setup. If Always is
chosen a user password prompt appears every time the computer is tuned on. If Setup is chosen, the password prompt
appears if WinBIOS is executed.
Video ROM Shadow C000, 32K
When this option is set to Enabled, the video ROM area from
C0000h ~ C7FFFh is copied (shadowed) to RAM for faster
execution. The settings are Absent , NoShadow, or Shadow.
Shadow xxxx, 16K,
These options enable shadowing of the contents of the ROM
area named in the option title. The settings are Absent ,
NoShadow, or Shadow. The ROM area that is not used by
ISA adapter cards will be allocated to PCI adapter cards.
IDE Block Mode
If your hard disk drive supports IDE block transfer mode, enable this option for faster IDE hard disk drive transfer rate.
IDE Drivers Standby Timer
This option specifies the length of time of hard disk drive
inactivity that must expire before the IDE hard disk drive is
placed in IDE HDD Power Down. The settings are from 1
min to 15 min or disabled. HDD Power Down can be an
individual feature with independent timer and not infected
by Power Management Mode Select.
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Page 40
ATTENTION
Some IDE hard disk drives may not power down even if the
IDE Standby Timer is selected. Those hard disk drives do
not accept the BIOS IDE power down command because of
their build-in old version firmware.
Pri. IDE 32 Bit Mode
IDE 32-bit transfers will enhance data transfer rate on IDE
interface, but only 32-bit PCI IDE controller supports it on
this mainboard.
Pri. Master/Slave LBA Mode
If your primary master/slave IDE hard disk over 528MB, please
enables this LBA (Large Block Addressing) mode feature.
Sec. IDE Ctrl Drives Installed
This feature specifies how many IDE hard disk drive connect
to secondary channel port. The options are Master, Mst/Slv,
and Disabled.
Sec. IDE 32 Bit Mode
IDE 32-bit transfers will enhance data transfer rate on IDE
interface, but only 32-bit PCI IDE controller supports it on
this mainboard.
Sec. Master/Slave LBA Mode
If your secondary master/slave IDE hard disk over 528MB,
please enables this LBA (Large Block Addressing) mode fea-
ture.
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Chipset Setup
The WinBIOS Chipset Setup options described in this section are selected by choosing the appropriate high-level icon
from the WinBIOS Setup main menu. The selection window
is shown below.
Auto Configuration Function
When this option is Enabled , BIOS automatically configures
listed features based on detection of the CPU clock frequency.
when this option is Disabled, BIOS leave these features manually adjust by the user.
Recommended Chip Setup for Different System Clock
FEATURE
AT Cycle Wait States
AT Bus Clock Selection
DRAM Burst Cycle
Memory Write Wait States
Cache Write Cycle
Cache Read Cycle
AT Cycle Between IO Cycle
20 MHz 25 MHz 33 MHz 40 MHz 50 MHz
Disabled Disabled Enabled Enabled Enabled
CLKI / 3 CLKI / 3 CLKI / 4 CLKI / 5 CLKI / 6
' 3-2-2-2 '3-2-2-2 '4-3-3-3 * '4-3-3-3 '5-4-4-4
0 W/S 0 W/S 0 W/S 1 W/S 1 W/S
0 W/S 0 W/S 1 W/S 1 W/S 1 W/S
'2-1-1-1 '2-1-1-1 '3-1-1-1 '2-2-2-2 '3-2-2-2
0 0 0 3 0
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Hidden Refresh
Hidden refresh is performed independent of the CPU as long
as the CPU does not try to access local memory or the AT
bus during a hidden refresh cycle, refresh will be transparent to the CPU. The CPU can continue to execute from its
internal cache and execute internal instructions during hidden refresh without any loss in performance due to refresh
arbitration.
AT Cycle Wait State
If the option is Enabled, the chip will insert one extra wait
state in standard AT bus cycle. The options are Enabled or
Disabled.
AT Cycle Between I/O Cycle
This feature allows the user to select 3 or no back to back I/
O delay.
AT Bus Clock Selection
This option is used to select I/O bus lock settings. Possible
settings are derived from, and vary according to, system
clock. For example, at a system clock speed of 50MHz,
selecting CLKI/6 would result in a bus clock speed of
8.33MHz. The optimal setting depends on system clock
speed and the speed rating of installed adapter cards, but it
is highly recommended that 8.33MHz I/O bus clock speed
be used to ensure compatibility with ordinary adapter cards.
AT Bus Clock Control
The feature allows the user to select AT Bus Clock derived
from system clock ( Synchronous ), or from 14.318MHz/2
(Asynchro ).
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CLKI/3 for 20MHz, and 25MHz system
CLKI/4 for 33MHz system
CLKI/5 for 40MHz system
CLKI/6 for 50MHz system
Page 43
Fast AT Cycle
This feature allows the user to select Fast AT Cycle Enabled
or Disabled .
DRAM Burst Cycle
This feature allows the user to select four DRAM burst cycles,
3-2-2-2, *4-3-3-3, 4-3-3-3, and 5-4-4-4. The optimal setting
depends on system clock speed. 3-2-2-2 for clock speed of
20MHz and 25MHz, *4-3-3-3 for clock speed of 33MHz, 43-3-3 for clock speed of 40MHz, and 5-4-4-4 for clock speed
of 50MHz.
Memory Write Wait State
This feature allows the user to select between two memory
write settings, zero and one memory write wait states. The
optimal setting depends on system clock speed. One memory
write wait state for clock speed of 33MHz or higher, zero for
clock speed below 33MHz.
Internal Cache Write Back
This option selects the type of caching algorithm used by
BIOS
Cache Read Cycle
This feature allows the user to select four cache read burst
cycles, 2-1-1-1, 3-1-1-1, 2-2-2-2, and 3-2-2-2. The optimal
setting depends on system clock speed, 2-1-1-1 for clock speed
of 25MHz or lower, 3-1-1-1 and 2-2-2-2 for clock speed
33MHz, and 3-2-2-2 for clock speeds of 40 and 50MHz.
Cache Write Wait State
This feature allows the user to select between two cache write
settings, zero and one cache write wati states. The optimal
setting depends on system clock speed. One memory write
wait state for clock speed of 33MHz or higher, and zero for
clock speed below 33MHz.
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Non-Cacheable Block-1 Size
This feature provides one of two non-cacheable blocks on
system memory. The optional block sizes are 64KB, 128KB,
256KB, and 1MB or Disabled .
Non-Cacheable Block-1 Base
This feature assigns one of two non-cacheable block base address on system memory. The starting address for the noncacheable block must have the same granularity as the block
size. For example, if a 256KB non-cacheable block is selected, its starting address is a multiple of 256KB.
Video Cacheable C000, 32K
This feature allows the user to set whether the video BIOS in
C000~C7FF area are cacheable or non-cacheable.
Cacheable Adaptor ROM
This feature allows the user to set whether the adapter BIOS
in xxxxh, a 16KB block size (Shadowed) area is cacheable or
non-cacheable.
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Power Management Setup
The WinBIOS Power Management Setup options described
in this section are selected by choosing the appropriate highlevel icon from the WinBIOS Setup main menu. The selection window is shown below.
Power Management Mode Select
419 mainboard provides two Power Management Mode,
Auto_mode for non S-series dynamic CPU and SMI_mode for
S-series CPU.
System Timeout
This option specifies the length of time of system entering
Auto_mode or SMI_mode power management state. The timer
options are 15sec, 2min, 5min, 15min, 30min, 45min, 1hr,
or 4hr. The timer can be reloaded by any IRQs and local bus,
keyboard, video, hard disk and floppy disk access.
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IRQ1 (~ 15) Monitor
Enabling these options allows the IRQs (Interrupt Requests)
input to be monitored for both inactivity for entering
Auto_mode/SMI_mode and activity for entering
Normal_mode.
IRQ1 : Keyboard IRQ3 : COM2, 4
IRQ4 : COM1,3 IRQ5 : LTP2
IRQ6 : Floppy Disk IRQ7 : LTP1
IRQ9 : RedirectionIRQ2
IRQ10, 11, 12, 15 : Reserved
DRQ 0 ~ 7 Monitor
Enabling these options allows the DRQs (DMA Requests) input to be monitored for both inactivity for entering
Auto_mode/SMI_mode and activity for entering
Normal_mode.
LRQ Monitor
Enabling these options allows the LRQ (Local Bus Requests)
input to be monitored for both inactivity for entering
Auto_mode/SMI_mode and activity for entering
Normal_mode.
Keyboard IO Port Monitor
Enabling this option allows to access to port 60h and 64h to
be monitored for both entering and exiting Auto_more/
SMI_mode.
Floppy IO Port Monitor
Enabling this option allows floppy port (3F5h) access to be
monitored for both entering and exiting Auto_mode/
SMI_mode.
Hard Disk IO Port Monitor
Enabling this option allows hard disk port (1F0h to 3F6h)
access to be monitored for both entering and exiting
Auto_mode/SMI_mode.
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Video IO Port Monitor
Enabling this option allows video IO port to be monitored for
both entering exiting Auto_mode/SMI_mode.
Screen Sleep
This option specifies screen sleep when the system enters
Auto_mode or SMI_mode power management state. If the
options is Sleep , when the system enters to Auto/SMI_mode,
the screen turns to blank. If the option is Non-Sleep , when
the system enters to power management the screen will slow
down in Auto_mode and freeze in SMI_mode..
APM Function
This option specifies if the system enabled or disabled APM
(Advanced Power Management) function.
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FCC Notice:
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate
radio frequency energy. If not installed and used properly, in strict accordance with the manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures :
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
Consult the dealer or an experienced radio/television technician for helpand
for additional suggestions.
The user may find the following booklet prepared by the Federal Communi-
cations Commission helpful “How to Identify and Resolve Radio-TV Interference Problems.” This booklet is available from the U.S. Government
Printing Office. Washington, DC 20402, Stock 004-000-00345-4
FCC Warning
The user is cautioned that changes or modifications not expressly approved
by the manufacturer could void the user’s authority to operate this equipment.
Note : In order for an installation of this product to maintain compliance
with the limits for a Class B device, shielded cables and power cord must
be used.
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