Caching Tech BC3486F User Manual

Table of Contents

Chapter

1

Chapter 2

RAM Installation / 5

2-1

Co-Processor Installation / 6

2-2

Connector Functions / 7

2-3

Power Supply connector (JP3) / 8
Color/Mono Display Selection (JP6) /

Keylock connector(JPl4) /
Speaker

Keyboard connector (JPl) & External Keyboard
External
Reset Switch connector (JP8) / 10
Turbo Switch

Introduction / 3
Installation / 5

connector (JPI 7) I 9

Battery

connector (JP2) /

connector(JP15) /

8

10

6

(JP20) /

9

9

Turbo LED connector (JPI 6) / 10
On-board Battery/Discharge

Cache

2-4

Cache Ram Configuration / 1 I

Chapter

memory size

3

Upgrade

connector

se&ion (JP8A - JP8F) /

/

12

(JP23) / 10

11

Page

1

3.1

Switch

&Jump8r

& switches) (WI

Setting after Upgrading (CPU

A-W1

G,

Chapter 4 Operation / 14

4-1

AMI

BIOS Register Setup / 14

W2A-W2H;

sektion

JP12, JP13, &

jumpers

JP30) /

13

4-2 Standard CMOS Setup /

4-3 Advanced CMOS Setup / 16
4-4

Advanced

4-5

Auto Configuration with BIOS

4-6

Auto Configuration with Power-On Defaults / 21

4-7 Change Password / 22

4-8 Write To CMOS and Exit / 22
4-9 Do Not Write To CMOS and Exit / 22

Appendix A
Appendix B

Chipset

Setup / 19

BIOS Error Beep Codes / 23
BIOS Non-Fatal Error Message / 25

15

Defauks /

21

Page

2

Chapter 1 Introduction

Overview

The

BC3486F

and offers outstanding performance and features.
With

64K, 128K, or256Kcache

is really a high speed machine that is well
personal computers or workstations.

motherboard is standard baby-sized, fully

memory on board option, this system board

suited

for building advanced

PCIATcompatible

The most remarkable feature of the

With

386DX, 486SX, 487SX,

can bring the highest

upgraded from 386 Processor to 486 level, the
economical solution. Chapter 3 described the detailed informations.

The

BC3486F
chipset

which are highly integrated. With this
discrete devices required, which allows 2 memory banks to be placed on
the board. The size of the memory can be scaled from

The

BC3486F

processor to further enhance system per-formance

used as

processor, the

some jumpers. Detailed informations are provided in the related chapters.

is desingned with using the

provides options to accommodate the 80387 numerical Co-

tyhe

system processor. When 486 level CPU is used as the system

upgradable

486DX CPU

performahce. Esp8cially when

feature can be easily achieved by adjusting

BC3486F

useage

FRX46C411

chipset, there

is Processor

flexibility, system board

the system has to be

BC3486F

when

Upgradable.

offers the most

&

FRX46C402

are only a few

1

MB

up to

32 MB.

the

386

CPU is

Page 3

l

Intel

80386DX

Intel

,

80486SX, 80487SX

MHz

CPU can be used on

l

Burst Mode

+

FOREX 466

Cache

Memory

Bus Controller

* Direct

mapped cache memory, up to 256K

l

Support Intel 80387 numerical Co-processor when 386 CPU is

CPU

at 25133

CPU at

the BC3486F.

operation

Chipset, FRX46C411

-

Controller

Controll8r

0 wiat state

-

Fast page mod8 operation

-

Fully PC/AT compatible

MHz, AMD Am386 at

16120/25

and

MHz,

FRX46C402,

memory

2W33l40

80486DX

which

access if cache hit

MHz,

at 2933

cqntain:

used as system processor.

l

2 memory banks on board, Supports 1 MB up to 32 MB memory size,
DRAM

speed:

l

Software

Fast page mode, 80ns or

bus

sp88d

selection for maximun compatibility

1OOns

witH

add-on

cards

*

Dual processing

*

Supports two

speed

selection via software or hardware switch

cacheable/non-cacheable,

one local/non-local

m8mory

regions

l

Software<ontrolled

*

Eight

16.bit

expansion slots

l

Real time clock

*

Hardware trubo switch

* LEDs

for power, turbo mode, and

Page

4

shadow RAM for system and/or

harddisk

viedo

BIOS.

Chapter 2 Installation

21

8

RAM

Installation

Either 256KB, 1MB

motherboard.
The

BC3486F

sockets on board.

With the use of

32MB of local memory can be attained. Please refer to the following table
for

th8

detailed installation.

The corresponding part reference are as below

Bank 0 -­Bank 1 -- SIMS, SIM6, SIM7,

or

4MB

SIMM module can be used on the

supports 2 DRAM banks, Bank 0 and Bank 1, in SIMM

256Kx9, lMx9,

Bank 0

256K

256K

1M

256K

1M

4M

l/u

4M

SIMl, SIM2, SIM3, SIM4

or

4Mx9

DRAM modules, 1M and up to

Bank1
X
256K
X

IM

1M

X
4M

4M

(SIMM SOCKET)

SIM8

(SIMM SOCKET)

Memory

1M
2M

4M

5M
8M

16M
20M
32M

:

size

BC3486F

Page 5

22l

The
Cyrix,
performance when 80386 CPU is used

~88

u th8
“~pgrade”forfurther information about how to install

to obtain the solution.

Coprocessor Installation

BC3486F

the following diagram.

486SX CPU is

motherboard provides options to accommodate the Intel,

ULSI

80387 numerical Co-processor to

used

as

th8

system

Intel80387

further

as

the system processor.

procxssor,

please

enhance system

Please

se8

Chapter

80487SX or80486DX

3

Page6

23l

BC3486F

switching

Connector Functions

.

.

provides many functions

some jumpers.

Please see the following diagram and related

whbh

can be

selected or adjusted by

descriptions of each jumpers. The number “1” marked near the related

jumper

indicates

the 1st

pin of the jumper.

Battery/Dischaae

System Clock Oscillator

Connector (JP23)

(Y2)

1

i-r

CPU Selection Switch (WI) ’ wn

Exrwnal Battery Connector

CPU

Selectlon

Switch

(W2)

(JP2)

’

m

Power Supply Connector (JP3)
Keyboard Connector (JPl)
External Keyboard Connector

(JP20)

111

Cache Memory Size Selection (JP8AJP8F)P0 a

Vasion(

b

Color / Monochrome Display selection (JP6)

Turbo LED connector (JP16)

Turbo Switch connector

Keylock
‘uloICPU Selection

and Power LED (JP14)

(JPl2-13) --_-

‘0

CPU Selection

Speaker connector (JP17)

1)

Reset switch connector (JP8)

(JP15)

-

(JP30)

Page 7

Power Supply connector (JP3)

it is

very

JP3 is used to connect the power

power supply which provides a power good signal. Pin assignments are as
follows:

supply.

important to select a

Jumper Usage
JP3

Power Supply 1

Connector 2

Pins

3

4
5
6
7
8

9
10
11
12

Assignment Notes
Power good Connect the power

+5.ov
+12.ov

-12.ov

Ground
Ground
Ground
Ground

-5.ov
+5.ov
+5.ov
+5.ov

cables with both
black wires next to

each other, to the

power connector

Color/Mono Display Selection (JP6)

JP6

allows user to choose the type of display card used. Pin assignments

are as follows:

Jumper Pin
JP6

l-2Op8n

1 - 2 Short

Keylock

JP14 is used to connect the
case. Pin assignments are as follows:

#

connector (JP14)

Functio

Mono Monitor
Color monitor

keylock

connector on the front panel of the

Jumper Usage
JP14 Keyiock

enable/disable 2
keyboard and 3
Power LED 4

Page 8

to

Pins Description

1

LED power
No Connection

Ground

Keyboard lock

5

Ground

Notes

Keylock
8nabt8
th8

security use

is

used

or disable

keyboard for

to

Speaker connector (JP17)

Speaker connector JP17 is used to connect the speaker to the system
board. Pin assignments are as follows:

umper

JP17

uw

Speaker
connection 2

.

Ins

1

3
4

Speak Data
No connection speaker to J24
Ground
+ 5.ov

otes

Connect the PC

Keyboard connector

(JPl) &

External keyboard connector

(JP20)

JPl and

either to the rear or to the front of the system panel. Pin assignments are
as follows:

Jumper Usage

‘JPl

JP20

Connectors

External Battery connector (JP2)

JP2 uses the external battery when the on-board battery is not being used
for operation (JP2 always open, ie, without shorting any pin).

Pin 1 shall be used as the positive lead and pin 4 shall be used as the
negative lead. Pin assignments are as follows:

JP20

are both 5pins connectors used to connect the keyboard

Pins

DIN Keyboard

and

External Keyboard 3

Jumper Usage
JP2

External 1
Battery 2

1

2
4

5

Pins

3

Description
Keyboard clock
Keyboard data
Spare (NC)
Ground

+5.ov

Description
Battery
No connection
Ground

+Vcc

Notes
Connect the
keyboard to
rear or front
connectors

Notes
Pin 1 usde as
positive lead, pin
4 as negative lead

Page

9

Reset Switch connector

JP8

is used

connect the reset switch cable on the case with JP8. Pin assignments are

as follows:

to connect the reset switch to restart the system. You may

(JP8)

Jumper Pin

JP8 1

2

Turbo Switch connector

JP15 is used to select the system board’s system clock. Pin assignments
are as follows:

Jumper Pin

JPlS 1

2

Assianment

Reset control

Ground

(JPlS)

#

Assignment
Pull

up(+5v

Turbo Control Open

DC)

Pin

l&2

Open
Closed

Pin

l&2

Closed

Function
No action

Reset

Function
Turbo
Non-Turbo

Turbo LED connector (JP16)

Turbo LED connector JPI 6 is to connect the turbo LED cable of the case.

If

system board is in turbo mode, the turbo LED should light.

Switch

JP16

/

Usace Pin #

Turbo LED

1

2
3
4

Assignment

Pull up (

Turbo control

Pull up (

Turbo control

+5V
+5V

DC

DC)

)

On-board Battery/Discharge connector (JP23)

JP23 is used to discharge the battery. Short l-2 pins when operation. Short
2-3 pins can discharge the battery. Pin assignments as follows:

Jumper Pin
JP23 1

2
3

Assignment
Battery Vcc

82C206

Ground

Vcc

Note
Short 1-2 pins when
Short 2-3 pins to discharge
CMOS

operation

Page 10

Cache memory size selection

(JPSA - JPSF)

JP8A, JPBB, JPBC, JP8D, JP8E

memory sizes. The following shows the

and

JP8F

are used to set the cache

pins

should be shorted for different

size of cache memory:

Cache Size

JP8A JP8B JP8C

JP8D JP8E JP8F

12

1-2
1-2

128 or 256K

24

l

The

x$3;

256K

- ,--

l-2

Cache Ram Configuration

BC3486F

suports 2 banks of SRAM provides

112

2-3 2-3

32K, 64K,

of cache memory. The following shows the detailed information.

he

Size

256K
64K

128K*

.

Bank A
four

32Kx8

four

8Kx8

four

32Kx8 one

Bank B

four

32Kx8

four

8Kx8

aa

two
one

8Kx8

(Tag 0 & 1)

8Kx8

(Tag 0)

8kx8

(Tag 0)

The corresponding bank to part reference are as followings:

1

Data RAM Bank 0: U31, U32, U33, U34.
Data

RAM

Bank 1: U22,

U23, U24, U25.

Tag RAM 0: U26

Tag

RAM

1:

U42

The following

table

shows the speed of SRAM needed when different type

In

D
I-IJX-

mx

n

IJ%I

trm

of CPU is installed as system processor:

12

112

2-3

1
1

1

CPU type Tag Ram

&

Speed

386DX-33
486SX-16
486SX-25

486DX-33
486DX2-66

/

Speed(nS) Speed(nS)

20
30
25

20

20

*Due to the limitation of CACHE

motherboard can not support 128K cache when 486

Data Ram* CPU type Tag Ram

25

3860X-40 20

35 486SX-20

& Speed

30

4860X-25 25

25 486DX2-50

Speed(nS)

30

25

25

BURST MODE

operation, this

CPU is

used!!

Page

17

Charpter 3 Upgrade

If your

BC3466F

chapter because you have the maximum performance already.

was

originally equipped with 486DX CPU, please skip this

BC3486F

motherboard offers

th8

feature to upgrade the system from 386

Processor to 486 level. This feature will help you easy to upgrade your

system and you can

se8

the

very

obvious difference after you upgrade it.

Please notice the followings:

1.

Make sure your original 386

2.

Find page 7 of this manual, and reference the location of Y2, which

CPU

is 33 or 40 MHz.

is the SYSTEM clock of the motherboard. If your 386 CPU is 33 MHz,

then the Y2 is 66 MHz. If your 386 CPU is 40 MHz,

then th8

Y2 is 80

MHz.

3.

The NEW Processor that you want to upgrade, no matter it’s

487SX,

or

486DX,

please make sure the speed of the processor and

486SX,

the Y2 has to be changed to DOUBLE of the Processor Speed.

NOTE: The speed of Y2 CAN NOT be

higher than

twice of the speed

of CPU or the CPU will be damaged!!

Currently

availible

486 series processors can be upgraded and the proper

speed of Y2 are as followings:

CPU Speed Y2

20MHz 40MHz CLK=IN/3

AT-BUS Clock’

Example

386DX-20,486SX-20,
487SX-20

25MHz

5OMHz CLK-IN/3

3860X-25,486SX-25,
487SX-25,4860X-25
486DX2-50

33MHz

66.6MHz CLK-iNI4

3860X-33,486DX-33

4860X2-66

40MHz 80MHz

CLK-IN/5

386DX-40

tf you need different

sp88d

of System Clock

dealer for further service.

l

AT BUS

Clock: The setup value on Page 20 of Advanced

Page

12

Oscilator,

please contact your

Chipset

Setup.

l

31

Switch 81 Jumper Setting after Upgrading

(CPUselection

jumpers & switches)

(WlA-WIG, W2A-W2H;

After you install the 486 processor, JPI 2, JP13, &

that you need to select:

A. WIA-WIG,

Function
to select 80386

to

s&ct

B. JPl2-13

Function

to select

C.

JP30 -

Function Jumper
to select 486DX CPU
to select 487SX CPU 2-3 short
to select 486SX CPU

W2A-W2H -

CPU

80486 CPU

When select 486 CPU, to select 486DX or 486SX:

-

486SX CPU

When

l-2

pins of JPI 2-13 are shorted, to select 486DX or

487SX CPU to be used:

to select 386 or 486 CPU:

Switch

WIA-WIG

W2A-W2H

WIA-WIG

W2A-W2H

JP30

JP12, JP13, &

Pin
2-3 short

2-3 short

1-2 short
l-2 short

Jumper

JPl2-13

Pin

1-2

short

12 & JP13 are shorted)

JP30

#

#

are the

Pin

#

l-2 short

2-3 short

JP30)

jumpers

Page 13

Chapter 4 Operation

This chapter

PieaSe

system. Therefore please make sure you understand thoroughly before
making any change or you may contact your dealer for more
information.

This chapter will describe briefly the BIOS written by

M8gatr8nd

in this board as it will cause functional incompatibility.

41l

The setup program Is

are

Stored

the values stored in the CMOS. If the CMOS is bad, the system is
configured with the default values stored in the ROM file. There are 2 sets

of BIOS values

the

Power-On default values.

The

BIOS Setup default values

provide optimum performance for the system. They are the best case
default values.

The

Power-On default values,

stable values for the system. They are to be used if the system is
performing erratically because of hardware problems.

tells

the user how to use the SETUP

note

that any improper

Inc.) In the mean time do not use

AMI

BIOS Register Setup

used

in the CMOS. If

stored

in the ROM file: the BIOS Setup

us8

of this

to configure the system. These system options

th8

CMOS is good, the system is configured with

are the default values which should

which are the worst case defaults, are the

for

BC3466F

setup

can cause damage to your

other

BIOS than the one uses

mainboard.

AMI.

(American

default values

detailed

and

Listed below is an explanation of the keys displayed at the bottom of the

screens accessed through the BIOS SETUP program:

ESC:

Exit to previous screen.

Arrow keys: Use

PgUp/PgDn/Ctrl-PgUp/Ctrl-PgDn:

forth8 highlighted feature. If there are less than 10 available options, the

Ctrl-PgUp

keys.

and Ctrl-PgDn

arrow keys to move cursor to desired selection.

Modify the default value of the options

keys

function the same as the PgUp and PgDn

Page 14

Fl:

Displays

Fz(F3:

help

screen for

Change background and foreground colors.

s8i8ct8d

feature.

F5: Retri8v8s

was started. These values will be CMOS values if the CMOS was
uncorrupted at the start of the session, or they wiii b8 the BIOS

defauit

F6: Loads ail features in the Advanced CMOS Setup/Advanced

Setup

F7: Loads ail features in the Advanced CMOS Setup/Advanced
Setup with the Power-On defaults.

FIO:

Saves aii changes made to Setup and exits program.

?‘&t8: The defautts VaiU8

&7>

options requires changing the

42l

The Standard CMOS Setup utility is used to configure the following

features:

Date : Month, Date, and Year. Ranges for each value are

prompt box in the lower right corner of the CMOS Setup Screen.
Time : Hour, Minute, and Second. Uses 24 hour clock format.

the

values

which

we?‘8

resident when current

values.

with

th8

BIOS

Setup defaults.

for the prompts which occur when the

keys are pressed is always

<N>

to

Standard CMOS Setup

setup

session

<R>,<F6>,and

<N>

(No). Actually executing these

<Y>

(Yes) and pressing <ENTER>.

listed

below in

Setup

Chipset

Chipset

Daylight Savings : Disbaled or Enabled.
Hard Disk C and Hard Disk D : Hard disk types from 1 to 46 are standard

ones; type 47 is user
parameters for

The drive types are identified by

Type

each

The number

parameters.

definable.

drive.

designation for a drive with certain

The user must enter the hard disk

th8

following characteristics:

identification

Page 15

w

The number of cylinders found in the specified drive type.

Hewk

WPcom The

L-zone

Capacity The formatted capacity of the drive based on the formula:

(#

Floppy Drive A and Floppy Drive B : The options are

MB

Gould

Primary Dispaly : Options are Monochrome, Color 40x25,

EGA, Color
used for network file servers.

The number of heads found in the

read delay circuitry which takes into account the timing

differences between the inner and outer edges of
the disk platter. The number designates the starting cylinder of
the signal.

L-zone is the landing zone of the heads. This numberdetermines
the cylinder location where the heads will normally park when
the system is shut down.

of heads) x (# of cylinders) x (# of

“Not Installed” is available for use as an option. This option could

be used for diskless workstations and SCSI hard disk. Type 47

may be used for both hard disks C and D. The parameters for

type 47 under Hard Disk C and Hard Disk D may be different.

51/4”,

720 KB

be used as an option for diskless workstations.

31/2”,

1.44 MB

80x25,

and Not installed. The Not installed option could be

31/2”,

specifi8D

secskyl.)

and Not installed. Not installed

drive type.

th8

surface of

x

(512byteslsec)

360 KB

51/4”,

VGAPGN

1.2

Keyboard : Options are installed or Not installed.

.

43

The advanced CMOS Setup program is equipped with a series of help
screens, accessed by the
for a particular configuration feature and special help for some of the

opt ions.
The following is a short description for each of the options on the Advanced

CMOS Setup Screen.

Advanced

CMOS

eFl>

Setup

key, which will display the options available

Page 16

Advanced CMOS Setup Screen of Factory Defautt

BIOS SETUP PROGRAM - ADVANCED CMOS SETUP

(C) 1990 American

TypematkRatd’rogramming

Typematic Rate Delay
Typematk Rate
Above 1 MB Memory

Memory

Test

M

emorpprltyEmwChdt

H&D$TMesqe Dluplay

Wait

For<

Ffp@

System Boot Up Num

Floppy Drive seek
System Boot Up Sequence
System Boot Up CPU Speed

External Cache

Internal Cache Memory

Fast gate A20
Turbo Switch Function

Password Checking Option

Esc: Exit

FS:

Old Values

(ChaWSec)

TIdc

Sound

47

RAM Area

l>MnyError

At

Memory

Cption

l+tc

(rmec)

Tmt

Lode

W

Megatrends

:DiS8bbd
:500

:

15

:Di88bbd
:­:BIldbd
:BIdbd
:WOO
:b&bd
:Ch

:&l&W

:A:,C:
:High

:

Enabled

: Enabled

:

Enabled

: Enabled

:SCtUp

Select

(Ctrl)PgUp/PgDn:hAodify

Inc., All Rights Reserved

Video ROM

Shadow

COW,

Adaptor

ROM Shadow
Adaptor ROM Shadow
Adaptor ROM Shadow
Adaptor ROM Shadow
Adaptor ROM Shadw

System

ROM

C800,32K

DOOO,32K
D800,32K
EOOO,32K

E800,32K

shadaw

FOOO,64K

Fl

32K

F6: BIOS Setup Defaults F7: Power-On Defaults

:BZ&lOd
:Di8&Od
:Dwblad
:Diubl#i
:DMhd
:Di88b&d
:EnrMad

:tielp F2/F3:Color

Typematic Rate Programming:

adjust the rate at which a keystroke is repeated. The options
Rate Delay

(msec)”

and “Typematic

By enabling this option, the user can

“Typematic

Rate(Chars/sec)”

affect this rate.
When a key is pressed and held down, the character appears on the screen
and after a

delay

set by the Typematic Rate Delay, it keeps on repeating
at a rate set by the Typematic Rate value. When two or more keys are
pressed and held down

silmultaneously,

only the last key pressed will be
repeated at the typematic rate. This stops when the last key pressed is
released, even if other keys are depressed.

Available
Available

17.1,

Above 1 MB Memory Test:

Typematic Rate Delay

Typematic Rate

16.0

,....,

2.0.

This feature, when enabled, will invoke the

options are:

options

250,500,750,

&

1000.

ar8:~.0,26.7,24.0,21.8,20.0,18.5,

POST memory routines on the RAM above 1 MB (if present on system). If

disabled, the BIOS will only check the first 1 MB of RAM.

Memory Test Tick Sound:

This option will enable (turn on) ordisable (turn

off) the ” ticking ” sound during the memory test.

Memory Parity Error Check: If

the motherboard

doesn’t

have parity RAM,

user may disable the memory parity error checking routines in the BIOS.

Page

17

Hit <DEL, Message Display:

“Hit

<DEL+

If you want to run SETUP”

Disabling this option will prevent message:

from appearing on the screen

Hard Disk Type 47 RAM Area:

definable had disk types. Normally, the
at

0:300

in lower system PAM. If a problem occurs with other software, this

data can be located at the upper limit of the DOS Shell (640

option is set to

DOS 1 KB,

When

the system boot-up.

The

AMI

BIOS

SETUP

features two

dataforthese

the DOS Shell is shortened to 639 KB, and the

disk types are stored

KB).

user-

If the

top KB is used for the hard disk data storage.

Wait For <Fl> If Any Error:

Before

the system boots-up, the BIOS will

execute the POST routines, a series of system diagnostic routines. If any
of these tests fail, but a non-fatal error has occurred and the system can
still function, the BIOS will respond with an appropriate error message
followed by the following statement:

“Press

<Fl,

to continue”

If this option is disabled, any non-fatal error which occurs will not generate

the above statement, but the BIOS will still display the appropriate error

message. This will eliminate the need for any user response to a non-fatal

error condition message.

System Boot Up Num Lock : The user may turn off the “Num Lock” option

on his Enhanced Keyboard when the system is
him to use the arrow keys on the numeric keypad instead of using the
set of arrow keys on
turning the

“Num

the

Lock”

Enhanced Keyboard. The BIOS will

on.

pOW8r8d

on. This will allow

other

default

to

Floppy Drive Seek

allow a fast boot and to decrease

System Boot Up Sequence : The

At

Boot : The default for this option is

th8

possibility of

AMI

BIOS will normally attempt to boot

damage

“Disabled”

to

th8

heads.

to

from floppy drive A:(if present), and if unsuccessful, it will attempt to boot

from hard disk C:.

System Boot Up CPU Speed : This option can set the CPU speed during

POST (Power On Self-Test).
speed.

“Low”

means the CPU is running

reliability. Note when 40 MHz CPU is

“High”

means the CPU is running on full

l/2

of CPU speed for better

install8d.

set this option as “Low”.

Page 18

External

external cache is enable

Cache

Memory: This option

or

disable.

allows

user

to specify whether the

Internal Cache Memory : This option allows user to

the internal cache of the 80486

Fast Gate

Turbo Switch Function : This oprion

turbo switch.

Password Checking Option: The password feature can be used to

prevent from unauthorized system boot-up or use of BIOS SETUP.

If

the

on,
Default setting is “Setup”. The password prompt will not appear when the

system is turned on, but
program. Factory default password is

The program
each
appear, followed by an

lock and it will be necessary to reboot.

Video ROM Shadow COOO,

each different segment.

Adaptor ROM Shadow

Shadow Function of Adaptor’s BIOS if there is, such as SCSI Controller.

A20

Option : Enable this option will optimize OS/2 environment.

“Always”

th8

prompt for user password

incorreCt

Option

is

abws thr88

attempt, the prompt to enter the current password will

“X”.

CPU.

allows

users to

chosen

at Setup, each time

will

appear.

will

appear if the user attempts to enter

attempts to key in the correct password.

After the third incorrect attempt, the system will

32K : Shadow RAM enabled or disabled at

C800 -

“AMY.

E800 : This option enable or disable the

enable

enable or disable

th8

or

disable

system is turned

th8

Setup

After

System ROM Shadow FOOO, 64K

Function of SYSTEM BIOS.

44l

This portion of the BIOS Setup is entirely chip set specific and requires
knowledge about

is used to change the register values for the
control most of the system options. The screen of the Factory Setup Value
of Advanced
follows for

Advanced

th8

Chipset

each

of the options on the Advanced

Chipset

FOREX

Setup is shown on the next page. A short description

:

This option enable or disable Shadow

Setup

46C411/46C402 chipset

in use. This option

chipset.

These registers

Chipset

Setup.

Page

19

Advanced

BKIS

SETUP

CHIPSET

Setup

fTWC%lAM -

Screen

of Factory

ADVANCED

CHIPSET

Defauit

SETUP

(C) 1990 American Megatrends inc., All Rights Reserved

AT-BUS

Cbck
VOCfTKHkXWefyCOZW
Adapt.ShadawRAMCachaW

video shadow RAM

System Shadow RAM

RemapMemory
Fkmppd

Bb&-1
Bbck-1

Bkd-1

Bbck-2

Block-2 Memory Base

Bkdc-2

DRAM

DMA Ckxk

I

Esc: Exit

F5: Old

AT-Bus

Speed

thcheae

cacheable : No

Memory

Ciah&le

Cacheable

l+ic

Values

cach@wa

Addreee

Addrew

Memory Size

Memory Base

Memory

Memory Size

Memory

RAS Precharge Time

Clock Speed:

Clock which allows user to use the

: cLKm/4

:Di8&kd

:No
:No

:M

:Yo8

:

256KB

:

1024KB

:Yar

:

256KB

:

1024KB

:Y88

:35

: scLw2

:Sekt

(Ctrl)PgUp/PgDn:Modify

F6:BIOS

Setup Defaults

Fl

: Help

F7:Power-On

FZ/F3:Color

Default!

This option provides the selection of different Bus

110

cards with various speed. Different

J

type & speed of CPU has to set with different AT Bus Clock Speed. Please
see Page 12 for proper setup value.

I/O

Cmd Recovery control:

This function will generate long enough I/O

command recovery time for slow reacting peripheral cards when ‘ENABLED”.

-I “I

._^_.. .- - --.-.“- __^__

Note : When

486SX/487SX-20

is used,

l/O

Cmd Recovery Control must be

enabled.

Adapt. Shadow

address

C8000H w

RAM

Cacheable : This option allows to select shadowed

EFFFFH to be cacheable or not. This option will only

effect when Adapter ROM Shadow is Enabled in Advanced CMOS Setup.

Video Shadow

address COOOOH w

RAM

Cacheable : This option allows to select shadowed

C7FFFH

to be cacheable or not. This option will only

effect when Video ROM Shadow is Enabled in Advanced CMOS Setup.

System Shadow

RAM

Cacheable : This option allows to select shadowed

address FOOOOH w FFFFFH to be cacheable or not. This option will only

effect when System ROM Shadow is Enabled in Advanced CMOS Setup.

Remapped Memory : Enable this option can save up to 256K usable

memory located from 640K to

IMB

(OAOOOOH * OFFFFFH) can be

remapped to the top of the on-board memory.

Page 20

Remapped Memory

unuseable memory.

Cacheable : “Yes”

The

physical memory location can be remapped. tf set

option allows to save up to 256KB

as “No”, the Shadow function will be disabled automatically.

Block-l Memory Size : This option allows user to select

Block-l size

from

256KB, 512KB,

1 MB, or 2MB.

th8

memory

Block-l Memory Base Address : This option must be a boundary of

Block-l Memory

Size.

Information of options are avaiiibie when press

Fl.

Block-l Memory Cacheable : This option is for Local Memory Access. It

must be

Block-2 Memory

Block-2 size from

Block-2

Block-l Memory Size. Information of options are availible when press

s8t

as Cacheable

Size :

256KB, 512KB,

Memory

Base Address : This option must be a boundary of

(“Y8s”).

This option allows user to select the memory

1 MB, or 2MB

Fl.

Block-2 Memory Cacheable : This option is for Local Memory Access. It

must be set as Cacheable (“Yes”).

DRAM RAS

precharge

Precharge

Time : Setting this option as “2.5” will speed up the

cycle if 20 MHz CPU is used. Note that “3.5” is better for 33 or

40 MHz CPU.

DMA

Clock : This option allows to set the DMA Clock as

reliability when

l

45

20MHz

CPU is used. “SCLtV2” setting for

Auto Configuration With BIOS Defaults

“SCLK”

for more

33/40MHz

CPU.

The Auto Configuration With BIOS feature uses the default system values
before the user has changed any CMOS values. If the CMOS is corrupted,

the BIOS defaults will automatically be loaded to the “Advanced CMOS

Setup” and “Advanced

CHiPSETSetup.

This default values will provide the

optimum performance for the system.

l

46

This feature uses the default Power-On values. You may wish to

Auto Configuration With Power-On Defaults

use this

option as a diagnostic aid if your system is behaving erratically.

Page 21

47

0

The

check function ls enabled or disabled in Advanced CMOS Setup. The
password check function is enabled by choosing either

“setup”.

The password, which will be stored in the CMOS, cannot exceed 6 ASCII
characters. A default password, to be used if the CMOS is corrupted, is
stored in the

Change Password

BIOS SETUP

Please

program has a optional password feature. The password

see

page

ROM.

The default password is

19 for detailed descriptions.

<AMI>.

“Always”

or

To change the

to this selection and pressing

help by pressing Fl key when needed.
Once Setup is completed and the changed values have been stored in the

CMOS, when the system next boots, the user will be prompted for the
password if the password function is present and has been enabled.

48

m

The features selected and configured in the Standard Setup, Advanced

CMOS Setup, Advanced Chip Set Setup, and the new Password Setup will
be stored In the CMOS when this option is taken. The CMOS checksum is
calculated and written to the CMOS. Control is then passed back to BIOS.

4.9

This option passes control back to BIOS without writing any changes to the
CMOS.

us8r

password, by using the arrow keys to move the cursor

<Enter>,

and follow the request and ask for

Write To CMOS And Exit

Do Not Write

To

CMOS And Exit

Page 22

APPENDIX ABIOS Error Beep Codes

During the POST (Power On Self Test)
each

time

the system is powered on,

Non-fatal

continue the boot up

screen.

Fatal errors are those

up procedure. If a

dealer for possible repairs.

These

beeps. The numbers on
of beeps for the

#

#

of Beeps Error Message

errors are

See Appendix

fatal errors are usually communicated through a series of audible

8, are fatal errors.

those

which,

in most

process.

The error messages normally appear on the

B for BIOS Error Messages.

which will not allow the system to continue the

fatal error occurs, you should consult with your local

th8

fatal error list

corresponing

Refresh Failure : The memory

motherboard is faulty.

Parity Error : A

memory (the first block of 64KB) of the system.
Base 64

within the first 64 KB of memory.

error. All errors listed, with

parity

KB Memory Failure : A memory failure occurred

routines, which are performed

errors

may occur.

cas8s,

allow

th8

system to

below

correspond to the number

the exception of

refresh

circuitry of the

error was detected in the base

boot-

Timer Not Operational : Timer # 1 on the system board

has failed to function properly.

Processor Error : The CPU on the system board has

generated an error.
8042 - Gate A20 Failure : The keyboard controller (8042)

contains the Gate A20 switch which allows the CPU to

operate in virtual mode. This error message means that

the BIOS is not able to switch

mode.

th8

CPU into protected

Page

23

#of

Beeps

Error Message

I

Processor Exception Interrupt Error : The CPU on

motherboard has generated an exception interrupt.

8

Display Memory Read/Write Error : The system video

adapter

Pleas8 note : This is not a fatal error.

9 ROM

not match the value encoded in the BIOS.

10

CMOS Shutdown Register Read/Write Error:

shutdown register for the CMOS memory has failed.

th8

is either missing or tts memory is faulty.

Checksum Error : The ROM checksum value does

The

Page 24

APPENDIX B

BIOS Non-Fatal Error Message

If a non-fatal error occurs during the POST

the

systm

is powered on,

th8 foiiowing fomt:

ERROR Message

the

error

message wiii

Line

1

routines

performed each time

appear

on

the screen

in

ERROR Message Line 2

Press

*Fl>

to RESUME

Note

the error message and press the

up procedure.

No& If

the ” Wait for
Setup portion of the BIOS SETUP PROGRAM has been set to
“disabled”, the

For most of the error messages, there is no ERROR Message
Generally, for those messages containing a line 2 ERROR Message, the
text will be ” RUN SETUP UTILITY “. Pressing

BIOS SETUP PROGRAM.

A description of

CH-2

Timer Error : Most AT standard system boards include two timers.

An error with timer # 1 is a fatal en-or, explained in Appendix A. If an error

occurs with timer #

<F1,

if Any Error ” option in the Advanced CMOS

<Fl>

prompt will not appear on the third line.

th8

error messages appear below:

2,

this error message appears.

<FIB

key to continue with the

th8 <Fl B k8y

will

Line

invoke

boot-

2.

the

INTR Yl

Error:

iNTR #2

CMOS

is used for storing
power and

CMOSChecksum

value is generated to provide for error checking. If the previous value is
different from the value currently read, this error message appears. To
correct this error, you should run the BIOS SETUP PROGRAM.

Error:

Battery

The interrupt channel #1 failed the POST routine.

The interrupt channel #2 failed the POST routine.

State Low : There is a battery in

th8

CMOS values. This

n88ds

to b8 replaced.

Failure:

AftertheCMOSvaiuesaresaved, achecksum

your

battery

system board which

appears to

below

in

Page 25

CMOS System Options Not
either corrupt or nonexistent. Run the BIOS SETUP PROGRAM to
this

8?TOf’.

Set :

The values stored in the CMOS are

corrgcf

CMOS Display

Type

Mismatch :

The

type of video stored in CMOS does

notmatchthetyp8d8tect8dbyth8BIOS.Runth8BlOSSETUPPROGRAM

to

corr8ct

this

817Or.

Display Switch Not Proper : Some systems require that a video switch on

the motherboard b8
the

type

of video you are using. To correct this situation, set the switch

s8t

to

either

color or monochrome, depending upon

properly. (Remember to shut down the system first.)

Keyboard Is locked . . .

engaged. The system must b8

Unlocked It : The keyboard lock on the system is

unlock8dto

continue the boot up procedure.

Keyboard Error : The BIOS has encountered a timing problem with the

keyboard. You may also set the : Keyboard ” option in the BIOS Setup
Program Standard CMOS Setup to ” Not installed”, which will cause the
BIOS to skip the

KMntetface Error : The BIOS has found an error with

keyboard

POST routines.

th8

keyboard

connector on the system board.
CMOS

Memory Size Mismatch : if

th8

BIOS finds the amount of memory
on your system board to be different from the amount stored in CMOS, this
error message is generated. Run the BIOS SETUP Program to correct this
error.

FDD

Controller Failure : The BIOS is not

able

to communicate with

th8

floppy disk drive controller. Check all appropriate connections after the
system is

powered

off.

HDD Controller

Failure : The BIOS is not

abie

to communicate with the

hard disk drive controller. Check all appropriate connections after the

system is powered off.

C: Drive Error t The BIOS is not receiving any response from hard disk

drive C:. It may be necessary to run the Hard Disk Utility to correct this

Page

26

problem. Also,

Setup of the BIOS SETUP Program to

b88n Selected.

0:

Drive

procedures in C:

check

the

type

of hard disk selected in the Standard CMOS

see

Error : The same error has occurred with hard drive D:. Follow

Drive Error

to correct this situation.

if the

correcf

hard disk drive has

th8

C: Drive Failure

drive

C:. It may b8 necessary to replace

D: Drive Failure : The same error as C:

:

The BIOS cannot get any response from the hard disk

th8

hard disk.

Drive Failure

has occurred with

hard drive D:.
CMOS

Time &

SETUP Program to set the date and time of the CMOS

Date

Not Set : Run the Standard CMOS Setup of the BIOS

a

Cache Memory Bad, Do not Enable Cache ! : The BIOS has found the

cache memory of the motherboard to be defective. Consult your system
manufacturer to repair this problem.

8042

Gate A20 Error : The Gate A20 portion of the keyboard controller

(8042) has failed to operate correctly. The 8042 chip should be replaced.

Address Line Short : An error has occurred in the address decoding

circuitry of the motherboard.

DMA # 2 Error : An error has occurred with the second DMA channel on

the motherboard.

DMA # 1 Error : An error has occurred with the first DMA channel on the

motherboard.

DMA Error : An error has occurred with the DMA controller on the

motherboard.

No ROM Basic : This error occurs when a proper bootable sector cannot

be found on either the floppy diskette drive A: or the hard disk drive C:. The
BIOS will try at this point to run ROM Basic, and the error message will be
generated when the BIOS does not find it.

Page 27

Diskette Boot Failure : The diskette used to boot-up in floppy drive A: is

corrupt, which means you cannot use it to boot-up the system. Use another
boot diskette

Invalid

but it

follow the instructions on the screen,

On Board Parity Error : The BIOS has encountered a parity error with

some memory installed on the system board. The message will appear as
foilows:

and follow

Boot

Dlskmttm :

cannot boot-up the system with

the instructions on the screen.

The

BIOS can read the diskette in floppy drive A:,

it.

Use another boot diskette and

ON BOARD PARITY ERROR

ADDR (HEX) = (XXXX)

Where XXXX is the address (in hexadecimal) at which the error has
occurred. “On Board ” means that it is part of the memory attached directly
to the system board, as opposed to memory installed via an expansion card

in an WO (BUS) slot.
Off

Board Parity Error : Ths BIOS has encountered a parity error with

some memory installed in an

foiiows:

I/O

(BUS) slot. The message will appear as

Off BOARD PARITY ERROR
ADDR (HEX) = (XXXX)

where XXXX is the address (in hexadecimal) at which the error has
occurred. ” Off Board ” means that it is part of the memory installed via an
expansion card in an VO (BUS) slot, as opposed to memory attached
directly to the system board.

Parity Error 3333 :

memory in the system, but it is not able to determine the address of the

error.

The BIOS has encountered a pariiy error with some

Page 28