ICP PSC-486 VER:C PSC-486 User Manual

PSC-486 Ver.C

ISA/PCI 486
Single Board Computer

@Copyright 1996
All Rights Reserved.
Manual fifth edition Jan.10,1997
The information in this document is subject to change without prior notice in
order to improve reliability, design and function and does not represent a
commitment on the part of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special,
incidental, or consequential damages arising out of the use or inability to use
the product or documentation, even if advised of the possibility of such
damages.
This document contains proprietary information protected by copyright. All
rights are reserved. No part of this manual may be reproduced by any
mechanical, electronic, or other means in any form without prior written
permission of the manufacturer.

Trademarks

PSC-486 is registered trademarks of Acquire Inc., PC/104 is trademarked of
PC/104 Consortium, IBM PC is a registered trademark of International
Business Machines Corporation. Intel is a registered trademark of Intel
Corporation. AMI is registered trademarks of American Megatrends, Inc.
Other product names mentioned herein are used for identification purposes
only and may be trademarks and/or registered trademarks of their respective
companies.

2

Contents

1. Introduction.................................................................3

1.1 Specifications.........................................................................................4

1.2 What You Have......................................................................................5

2. Installation...................................................................6

2.1 PSC-486's Layout...................................................................................6

2.2 Unpacking..............................................................................................8

2.3 Jumper Description ................................................................................9

2.4 Upgrade the CPU.................................................................................10

2.5 Upgrade the External Cache.................................................................11

2.6 System Memory DRAM.......................................................................12

2.7 Watch-Dog Timer.................................................................................12

2.8 Parallel Port Interface........................................................................... 13

2.9 Serial Port Interface..............................................................................14

2.10 FDC37C665 Multi-I/O Chipset ............................................................14

2.11 PS/2 Mouse Setting ..............................................................................15

2.12 DiskOnChip™ Flash Disk.......................................................................15

1

3. Connection................................................................16

3.1 Floppy Disk Drive Connector ............................................................... 16

3.2 IDE Disk Drive Connector....................................................................16

3.3 Parallel Port.........................................................................................17

3.4 Serial Ports ..........................................................................................18

3.5 Keyboard Connector .............................................................................18

3.6 External Switches and Indicators..........................................................19

3.7 External Power Connector....................................................................19

3.8 External Speaker ..................................................................................20

3.9 PS/2 Mouse Port .................................................................................20

3.10 PC/104 Connection Bus .......................................................................20

4. AWARD BIOS Setup................................................ 22

4.1 Getting Start ........................................................................................22

4.2 Standard CMOS Setup.........................................................................24

4.3 BIOS Feature Setup..............................................................................25

4.4 Chipset Feature Setup .......................................................................... 26

4.5 Power management Setup.....................................................................28

4.6 PCI Configuration Setup ......................................................................30

Appendix A. Watch-Dog Timer .....................................32

2

1

Introduction

Welcome to the PSC-486 ISA/PCI 486 Single Board Computer.
The PSC-486 board is an ISA/PCI and PC/1

which comes
the latest Cyrix 5x86

mode I/O, designed for the system manufacturers, integrators,
or VARs that want to provide all the performance, reliability, and
quality at a reasonable price.

An advanced high performance super AT I/O chip SMC
FDC37C665 is used in the PSC-486 board. Both on-chip UARTs
are compatible with the NS16C550. The parallel port and IDE
interface are compatible with IBM PC/AT and XT architecture's.
The FDC37C665 incorporates sophisticated power control
circuitry(PCC). The PCC supports multiple low power down
modes.

In addition, the PSC-486 provides three 72-pin SIMMsockets for its
on-board DRAM. The 72-pin accepts 1MB, 2MB, 4MB, 8MB, 16MB,
and 32MB SIMM. So, the total on-board memory can be configured
from 1MB to 128MB.

equipped with high performance 486DX/DX2/DX4

CPU and advanced high performance multi-

04 form factor board,

or

PSC-486 uses the ALI chipset, M1489 and M1487, which are
100% ISA/PCI compatible chipset.

3

1.1 Specifications :

The PSC-486 ISA/PCI 486 Single Board Computer provides the
following specification:

• CPU : 486SX/DX/DX2/ DX4 or Cyrix 5x86

• Bus : ISA bus and PCI 32-bit local bus

• DMA channels : 7

• Interrupt levels : 15

• Chipset : M1489 and M1487

• Real-time clock/calendar : DS-12887 chip and quartz oscillator,

128B CMOS memory, powered by lithium battery for over 10 years
of data retention.

• RAM memory : 1MB to 128MB,EDO and standard DRAM supported

• Second Cache memory : 128KB,256KB,512KB,or 1MB

• E-IDE hard disk drive interface : up to two PCI Ehnace IDE hard

drives.

• Floppy disk drive interface : two 2.88 MB, 1.44MB, 1.2MB, 720KB,

or 360KB floppy disk drives.

• Two high speed Series ports : NS16C550 compatible UARTs

• Bi-directional Parallel Port

• Watch-dog timer : can be set by 1,2,10,20,110 or 220 seconds

period. Reset or NMI was generated when CPU did not periodically
trigger the timer. Your program use hex 043 and 443 to control the
watch-dog and generate a system reset.

• PC/104 expansion bus

• External power connector

• Keyboard connector

• Mouse : PS/2 Mouse Port on-board.

4

• Power Consumption : +5V @ 2.5A ( 486DX2-66, 4MB RAM)

±12V @ 20mA ( for RS-232 only)

• Operating Temperature : 0° ~ 60° C ( CPU needs Cooler)

1.2 What You Have

In addition to this
the following items:

• PSC-486 ISA/PCI 486 Single Board Computer

• Printer Cable

• FDD/HDD Cable

• 6-pin Mini-Din to 5-pin Din Keyboard Adapter Cable

If any of these items is missing or damaged, contact the dealer
from whom you purchased the product. Save the shipping
materials and carton in case you want to ship or store the
product in the future.

User's Manual

, the PSC-486 package includes

5

2

Installation

This chapter describes how to install the PSC-486. At first, the
layout of PSC-486 is shown, and the unpacking information that
you should be careful is described. The jumpers and switches
setting for the PSC-486's configuration, such as CPU type
selection, system clock setting, and interrupt IRQ setting for
serial ports and parallel port, are also included.

Important Note :

The PSC-486 supports 3 Master and 1 Slave PCI Devices. The
3 Master PCI slots are the PCI Slot 1-3 on the PCI/ISA
Backplane. The PCI Slot 1-3 usually are the next 3 PCI slots to
ISA/PCI CPU board slot.

Almost PCI VGA Board is a Slave PCI Device and Network
/SCSI Board is a Master PCI Device.

2.1 PSC-486's Layout

< reference next page >

6

7

2.2 Unpacking

Your PSC-486 Single Board Computer contains sensitive electronic
components that can be easily damaged by static electricity.

In this section, we describe the precautions you should take while
unpacking, as well as during installation. It is very important that the
instructions be followed correctly, to avoid static damage, and to
successfully install the board.

The system board should be done on a grounded anti-static mat. The
operator should be wearing an anti-static wristband, grounded at the
same point as the anti-static mat.

Inspect the cardboard carton for obvious damage. Shipping and
handling may cause damage to your board. Be sure there are no
shipping and handing damages on the board before processing.

After opening the cardboard carton, exact the system board and place
it only on a grounded anti-static surface component side up.

Again inspect the board for damage. Press down on all the socketed
IC's to make sure that they are properly seated. Do this only with the
board place on a firm flat surface.

Note : DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN

DAMAGED.

You are now ready to install your PSC-486 Single Board Computer.

8

2.3 Jumper Description

You can change the PSC-486's configuration by setting jumper
switches on the board. The board's jumpers are preset at the factory.
Under normal circumstances, you should not need to change the
jumper settings.

A jumper switch is
plastic cap inserted over two pins of the jumper). A jumper is
with the plastic cap inserted over one or no pin(s) of the jumper.
Figure 2.2 below shows different jumper settings which will be used in
this chapter.

1

2

3

(sometimes referred to as shorted with the

closed

CLOSED OPEN

1

1

1-2

1

2

3

1-2

2-3

Figure 2.2

open

2-3

1

2

3

2-4

9

2.4 Setting the CPU for PSC-486 Ver.B/C (Apr.10,1996)

If you want to upgrade the CPU, you must do two things:

1. Set the jumpers for CPU type.

2. Adjust the jumpers setting for CPU speed.

• CPU Type Setting:

CPU Type JP2 JP7 JP8 JP9 JP10 JP11 JP12 JP13 JP14

Intel DX2/DX4
DX4 &E

Cyrix 5x86
Intel DX4 &EW
AMD DX4+
(SV8B)

Cyrix/TI/SGS
DX2/DX4
AMD DX2/DX4
(NV8T)
AMD X5(133)

5x86 - P75

AMD DX2+
(SV8B)

ON=CLOSE OFF=OPEN

Factory Default : JP6 - OPEN

•

CPU Clock Setting :

(*): default setting

OFF ON 1-2 2-3 2-3 3-4 3-4 3-4 OFF

2-3 ON 2-3 2-3 2-3 3-4 3-4 3-4 5-6

1-2 ON 1-2 2-3 2-3 5-6 5-6 5-6 1-2

OFF OFF 1-2 2-3 2-3 OFF OFF 1-2 OFF

2-3 ON 2-3 2-3 2-3 3-4 3-4 3-4 1-3

CPU

Clock

JP15 JP16 JP17

1-2

JP17

3-4

25MHz OPEN 1-2 OPEN OPEN

* 33MHz OPEN 1-2 CLOSE CLOSE

40MHz CLOSE 2-3 OPEN CLOSE

5-6

Note :
DX2-66/DX4-100/5x86-100 sets CPU Clock - 33Mhz
DX2-80/DX4-120/5x86-120 sets CPU Clock - 40Mhz
AMD 5x86-P75(133Mhz) sets CPU Clock - 33Mhz

• CPU Voltage Selection - +5V, 3.3V, or 3.45V

10

Because right now in the market have several kind of CPUs
using different voltage in core logic. For example the AMD
offers 486DX2-66/80 and DX4-100/120 at 3.3V,Intel
offers DX4-75/100 at 3.3V,and some Cyrix CPU will use

3.45V.

CPU Voltage JP19 JP25

+5V 1-2 ,3-4, 5-6 2-3

* +3.3V OPEN 2-3

+3.45V OPEN 1-2

(*) : default setting

2.5 Upgrade the External Cache

The PSC-486 offers two banks external cache the range is from 128KB
to 1MB. The different cache memory setting is as follows,

Cache Size JP1 JP3 JP4 JP5
128KB,32Kx8,bank 0 1-2 3-4 2-3 1-2 1-2

256KB,32Kx8,bank 0/1 1-2 3-4

5-6

256KB,64Kx8,bank 0 1-2 3-4

5-6

512KB,64Kx8,bank 0/1 1-2 3-4

5-6 7-8

512KB,128Kx8,bank 0 1-2 3-4

5-6 7-8

1MB,128Kx8,bank 0/1 1-2 3-4

5-6 7-8
9-10

1-2 1-2 1-2

1-2 2-3 1-2

1-2 1-2 1-2

1-2 1-2 2-3

1-2 1-2 1-2

Note : Tag RAM (U5): 32K x 8 for one bank cache memory
64K x 8 for two banks cache memory

bank 0 : U1-U4 bank 1 : U7-U10

2.6 System Memory DRAM(EDO RAM supported)

11

There are three 72-pin SIMM sockets to accept
1Mb,2MB,4MB,8MB,16MB,or 32MB memory modules.
The total capacity is from 1MB to 128MB
can free install any memory module on any socket.
Don‘t care which socket is first to install.

NOTE :
SIMM 1, 3 accept one or two banks RAM modules
SIMM 2 only accepts one bank RAM module.

2.7 Watch-Dog Timer

The Watch-Dog Timer is enabled by reading port 443H. It should be
triggered before the time-out period ends, otherwise it will assume the
program operation is abnormal and will issue a reset signal to start
again, or activate NMI to CPU. The Watch-Dog Timer is disable by
reading port 043H. See Appendix A for more detailed description of
Watch-Dog Timer.

• JP27 : Watch-Dog Active Type Setting

JP27 DESCRIPTION

*1-2 RESET WHEN WDT TIME-OUT

2-3 ACTIVATE NMI TO CPU WHEN WDT TIME-OUT

OPEN DISABLE WDT

(*): default setting

(total 4 banks)

. Customer

• JP18: WDT Time-Out Period

PERIOD 1-2 3-4 5-6 7-8

1 sec. OPEN OPEN CLOSE OPEN
2 sec. OPEN OPEN CLOSE CLOSE

*10 sec. OPEN CLOSE OPEN OPEN

20 sec. OPEN CLOSE OPEN CLOSE
110 sec. CLOSE OPEN OPEN OPEN
220 sec. CLOSE OPEN OPEN CLOSE

(*) : default setting

12

2.8 Parallel Port Interface

This port can be set I/O address to 378H~37FH, 278H~27FH,
3BCH~3BEH or Disabled by BIOS setup. Also, the port's interrupt can
be set to IRQ7 or IRQ5 by jumper JP20, set Data Request Selection by
JP23, and set Data Acknowledge by JP22.
The PSC-486 allows installation of up to three different I/O ports.
These three ports are called: LPT1, LPT2, and LPT3. The printer port
on the Monochrome/Printer Adapter that is addressed at 3BCH~3BEH
will be LPT1 when it is installed. Then the port's address 378H~37FH
will be LPT2, and 278H~27FH will be LPT3. If the
Monochrome/Printer Adapter is used instead of Color/Graphic
Adapter, then the 378H~37FH will be LPT1, and 278H~27FH will be
LPT2. All the setting for the parallel port is done by BIOS Setup
program, please refer to Chapter 4 for more details.

• JP20 : Parallel Port Interrupt Setting

JP20 DESCRIPTION

* 1-2 IRQ7

2-3 IRQ5

(*) : default setting

• JP23: Parallel Port Data Request Setting

JP23 DESCRIPTION

1-2 DRQ1

* 2-3 DRQ3

(*) : default setting

• JP22 : Parallel Data Acknowledge

JP22 DESCRIPTION

1-2 DACK1

* 2-3 DACK3

(*) : default setting

13

2.9 Serial Port Interface

There are two on-board RS-232 serial ports interface, CN13( ACE0)
and CN16(ACE1). The serial ports can be configured as COM1,
COM2, COM3, COM4, or Disabled by BIOS setup.

• JP24 : COM1 Serial Port Interrupt Setting

JP24 COM1

* 1-2 IRQ4

2-3 IRQ15

(*) : default setting

• JP21 : COM2 Serial Port Interrupt Setting

JP21 COM2

* 1-2 IRQ3

2-3 IRQ11

(*) : default setting

2.10 FDC37C665 Multi-I/O Chipset

The PSC-486 comes equipped with super multi-I/O chipset SMC
FDC37C665, you can select JP26 to enable or disable the FDC37C665.

• JP26 : Multi-I/O FDC37C665/666 Setting

JP26 DESCRIPTION

* OPEN ENABLE FDC37C665

CLOSE DISABLE FDC37C665

(*) : default setting

2.11 PS/2 Mouse Setting

14

The PSC-486 have built-in PS/2 mouse port to release one
serial port for other application. The PS/2 mouse normally will
use the IRQ12 when install it.

• JP30 : PS/2 Mouse IRQ Selection

JP30 DESCRIPTION

OPEN Non

*CLOSE IRQ12

(*) : default setting

2.12 DiskOnChip™ Flash Disk

The DiskOnChip™ Flash Disk Chip(DOC) is produced by
M-Systems. The DOC have two models in market
: ED1102 and ED1202. The ED1102 is 28-pin DIP package
and ED1202 is 32-pin package,both models can be used in
PSC-486‘s 32-pin DOC socket. Because the DOC is
100% compatible to hard disk and DOS.Customer don‘t need
any extra software utility. It is just “plug and play”,easy and
reliable. Right now the DOC is available in 1MB/2MB capacity,
in the near future will have 4MB/8MB/16MB model.There also
have PROMDISK-Chip™ can be used with the same socket.

• JP31 : DiskOnChip Memory Address Setting

JP31 Address
1-2

3-4
* 5-6 E000

(*) : default setting

D000
D800

WARNING !!

If you install the ED1102,28-pin type,the ED1102
pin-1 should be at the 32-pin socket‘s pin-3.
Wrong installation will damage the ED1102 DOC.

15

3

Connection

This chapter describes how to connect peripherals, switches and
indicators to the PSC-486 board.

3.1 Floppy Disk Drive Connector

PSC-486 board comes equipped with a 34-pin daisy-chain driver
connector cable.

• CN6 : FDC CONNECTOR

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 GROUND 2 REDUCE WRITE
3 GROUND 4 N/C
5 GROUND 6 N/C
7 GROUND 8 INDEX#

9 GROUND 10 MOTOR ENABLE A#
11 GROUND 12 DRIVE SELECT B#
13 GROUND 14 DRIVE SELECT A#
15 GROUND 16 MOTOR ENABLE B#
17 GROUND 18 DIRECTION#
19 GROUND 20 STEP#
21 GROUND 22 WRITE DATA#
23 GROUND 24 WRITE GATE#
25 GROUND 26 TRACK 0#
27 GROUND 28 WRITE PROTECT#
29 GROUND 30 READ DATA#
31 GROUND 32 SIDE 1 SELECT#
33 GROUND 34 DISK CHANGE#

3.2 PCI E-IDE Disk Drive Connector

You can attach two IDE( Integrated Device Electronics) hard disk
drives to the PSC-486 internal controller.

16

• CN5: IDE Interface Connector

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 RESET# 2 GROUND
3 DATA 7 4 DATA 8
5 DATA 6 6 DATA 9
7 DATA 5 8 DATA 10

9 DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DATA 2 14 DATA 13
15 DATA 1 16 DATA 14
17 DATA 0 18 DATA 15
19 GROUND 20 N/C
21 N/C 22 GROUND
23 IOW# 24 GROUND
25 IOR# 26 GROUND
27 N/C 28 BALE - DEFAULT
29 N/C 30 GROUND - DEFAULT
31 INTERRUPT 32 IOCS16#-DEFAULT
33 SA1 34 N/C
35 SA0 36 SA2
37 HDC CS0# 38 HDC CS1#
39 HDD ACTIVE# 40 GROUND

3.3 Parallel Port

This port is usually connected to a printer, The PSC-486 includes an on­board parallel port, accessed through a 26-pin flat-cable connector CN7.

• CN7 : Parallel Port Connector

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 STROBE# 2 DATA 0
3 DATA 1 4 DATA 2
5 DATA 3 6 DATA 4
7 DATA 5 8 DATA 6

9 DATA 7 10 ACKNOWLEDGE
11 BUSY 12 PAPER EMPTY
13 PRINTER SELECT 14 AUTO FORM FEED #
15 ERROR# 16 INITIALIZE
17 PRINTER SELECT LN# 18 GROUND
19 GROUND 20 GROUND
21 GROUND 22 GROUND
23 IOW# 24 GROUND
25 GROUND

17

3.4 Serial Ports

The PSC-486 offers two high speed NS16C550 compatible UARTs with
Read/Receive 16 byte FIFO serial ports.

• CN13 & CN16 : Serial Port DB-9 Connector( ACE0 & ACE1)

PIN NO. DESCRIPTION

1 DATA CARRIER DETECT (DCD)
2 RECEIVE DATA (RXD)
3 TRANSMIT DATA (TXD)
4 DATA TERMINAL READY (DTR)
5 GROUND (GND)
6 DATA SET READY (DSR)
7 REQUEST TO SEND (RTS)
8 CLEAR TO SEND (CTS)
9 RING INDICATOR (RI)

• CN12 & CN15 : Serial Port 10-pin Header( ACE0 & ACE1)

Pin No. Description Pin No. Description
1 DCD 2 DSR

3 RXD 4 RTS
5 TXD 6 CTX
7 DTR 8 RI
9 GND 10 NC

3.5 Keyboard Connector

The PSC-486 provides two keyboard connectors.

• CN10 : 5-pin Header Keyboard Connector

PIN NO. DESCRIPTION

1 KEYBOARD CLOCK
2 KEYBOARD DATA
3 N/C
4 GROUND
5 +5V

18

• CN17 : 6-pin Mini-DIN Keyboard Connector

PIN NO. DESCRIPTION

1 KEYBOARD DATA
2 N/C
3 GROUND
4 +5V
5 KEYBOARD CLOCK
6 N/C

3.6 External Switches and Indicators

There are many external switches and indicators for monitoring and
controlling your CPU board.

• CN3 : RESET BUTTON

PIN NO. DESCRIPTION

1 EXTERNAL RESET
2 GROUND

• CN1 : POWER LED & KEYLOCK

PIN NO. DESCRIPTION

1 POWER LED ANODE
2 KEY
3 GROUND
4 KEYLOCK
5 GROUND

• CN4 : IDE LED connector

PIN-NO DESCRIPTION

1 +5V
2 HDD ACTIVE#

3.7 External Power Connector

The PSC-486 has an on-board external power connector CN11. You
can connect power directly to the CPU board for some single-board­computer( without passive backplane) application.

•

CN11 : EXTERNAL POWER CONNECTOR

PIN NO. DESCRIPTION

1 +5V
2 +12V
3 -12V

19

4 GROUND
5 GROUND
6 -5V
7 +12V
8 +5V

3.8 External Speaker

The PSC-486 has its own buzzer, you also can connect to the external
speaker through the connector CN2.

• CN2 : Speaker Connector

PIN NO. DESCRIPTION

1 SPEAKER SIGNAL
2 NC
3 GROUND
4 +5V

3.9 PS/2 Mouse 6-pin Mini-DIN Connector

• CN14 : PS/2 Mouse Connector

PIN NO. DESCRIPTION

1 MS DATA
2 NC
3 GROUND
4 +5V
5 KBT1
6 NC

3.10 PC/104 Connection Bus

The PSC-486's PC/104 expansion bus let you attach any kind of
PC/104 modules. The PC/104 bus is already become the industrial
standard, so you could easily install over thousands of PC/104 modules
from hundreds of venders in the world.

Note :
The PC/104 connector allows stack-thru PC/104 Module
directly to plug in. Don‘t need any additional mounting Kit.

20

• CN8 & CN9 : PC/104 Expansion Bus

( CN8 = 64-pin female connector;
CN9 = 40-pin female connector.)

Pin
NO.

0 -- -- 0V 0V
1 IOCHECK*

2 SD7 RESETDRV LA23 IOSC16*
3 SD6 +5V LA22 IRQ10
4 SD5 IRQ9 LA21 IRQ11
5 SD4 -5V LA20 IRQ12
6 SD3 DRQ2 LA19 IRQ15
7 SD2 -12V LA18 IRQ14
8 SD1 NOWS* LA17 DACK0*
9 SD0 +12V MEMR* DRQ0
10 IOCHRDY (KEY) MEMW* DACK5*
11 AEN SMEMW* SD8 DRQ5
12 AS19 SMEMR* SD9 DACK6*
13 SA18 IOW* SD10 DRQ6
14 SA17 IOR* SD11 DACK7*
15 SA16 DACK3* SD12 DRQ7
16 SA15 DRQ3 SD13 +5V
17 SA14 DACK1* SD14 MASTER*
18 SA13 DRQ1 SD15 0V
19 SA12 REFRESH* (KEY) 0V
20 SA11 SYSCLK -- -­21 AS10 IRQ7 -- -­22 SA9 IRQ6 -- -­23 SA8 IRQ5 -- -­24 SA7 IRQ4 -- -­25 SA6 IRQ3 -- -­26 SA5 DACK2* -- -­27 SA4 TC -- -­28 SA3 BALE -- -­29 SA2 +5V -- -­30 SA1 OSC -- -­31 SA0 0V -- -­32 0V 0V -- --

J1 / P1
Row A

J1 / P1
Row B

0V

J2 / P2
Row C

SBHE* MEMSC16*

J2 / P2
Row D

NOTES:

1. Rows C and D are not used on 8-bit modules.

2. P2 has two connector options with differing physical pinout orientation.

3. B10 and C19 are key locations.

4. Signal timing and function are as specified in p996.

5. Signal source/sink current differ from P996 values.

21

4

AWARD BIOS Setup

The PSC-486 uses the AWARD PCI/ISA BIOS for system
configuration. The AWARD BIOS setup program is designed to
provide maximum flexibility in configuring the system by offering
various options which may be selected for end-user requirements. This
chapter is written to assist you in the proper usage of these features.

4.1 Getting Start

When powered on the system, the BIOS will enter the Power-On-Self­Test routines. These routines will be executed for System Test and
Initialization and System Configuration Verification. After the POST
routines are completed, the following message appears :

To access AWARD PCI/ISA BIOS Setup program, press <Del> key.
The following screen will be displayed at this time.

" Press DEL to enter setup"

22

23

4.2 Standard CMOS Setup

The Standard CMOS Setup is used for basic system hardware
configuration. Every time when you change any hardware
configuration,for example memory size,you have to modify this
setup again. Please refer the following screen for this setup.

When the IDE hard disk drive you are using is larger than
528MB,please set the HDD mode to

Note : Setting incorrect drive mode may make the drive working
improperly.

Mode Setting for >528MB IDE HDD

mode.

LBA

24

4.3 BIOS Features Setup

This setup is designed for customer‘s tuning best performance
of the PSC-486 board. As for normal operation customers don‘t
have to change any default setting.The default setting is pre-setted for
most reliable operation.Please refer the following screen for the BIOS
Features Setup.

25

Virus Waring :

Enable - Will halt system when any attempt to
write to boot sector or patition table of hard disk.

Memory Parity Check :

Disable - Will not check the DRAM module‘s parity.
Right now almost 72-pin SIMM DRAM did not have
parity function.

Video BIOS Shadow :

Enable - Will increase the video speed.

C8000-CFFFF,D0000-D7FFF,& D8000-DFFFF Shadow :

When the installed add-on card‘s ROM address is as
above address,you could enable the shadow to get higher
operation performance.When you enable the shadow
function,it will also reduce the memory available by between
640KB and 1024KB.

4.4 Chipset Features Setup

This setup functions are almostly working for ChipSet(ALI
M1489 and M1487). These options are used to change the
ChipSet‘s registers. Please carefully change any default setting
,otherwise the system could be running un-stable.

26

Auto Configuration :

Enable : The BIOS will configure the ChipSet features
automatically when boot up the system.
Disable : The BIOS will allow customer to change the setting
on the screen.
AT -BUS Clock - CLK/4 means ­ 33Mhz/4 = 8.25Mhz (DX2-66 CPU)

Parallel Port Mode :

Onboard FDC Controller :

Onboard Serial Port 1 :

Disabled

Onboard Serial Port 2 :

Disabled

Onboard Parallel Port :

Normal(default),EPP,ECP,ECP+EPP

Enabled(default),Disabled

COM1(default),COM2,COM3,COM4

COM2(default),COM1,COM3,COM4

378H(default),278H,3BCH,Disabled

27

4.5 Power Management Setup

Power Management Setup help user handles the PSC-486
board‘s “green” function. The features will shut down the video
display and hard disk to save energy. The power management
setup screen is as following,

28

Power Management :

This is the master control of all power management functions.
The default setting is “disable” for general application.
User Defined : Allows user to set any power saving options.
Min. Saving : System enters power saving mode after
1 hour no activity.
Max. Saving : System enters power saving mode after
5 seconds no activity.

PM Control by APM :

No - Default setting
Yes - System BIOS will wait for APM prompt before it enters
any power management mode.

Note : APM Mode :

This mode is using for DOS 6.0 or higher version with
the driver POWER.EXE. The driver should be loaded
at system power-on by CONFIG.SYS file. POWER.EXE
will monitor the system status thru the BIOS APM
interface.

Video Off Option :

Susp,Stby ¡÷ Off - Screen Off when system in Suspend or
Standby mode.
Susp ¡÷ Off - Screen Off when system in Suspend mode.
All Modes ¡÷ Off - Screen Off when system in Suspend,
Standby,or Doze mode.
Alway On - System BIOS will never turn off the screen.

29

Video Off Method :

Blank Screen : When BIOS do the video off the screen
will be blank.
V/H Sync, + Blank : When BIOS do the video off,BIOS will turn
of the V-sync & H-sync signals from VGA
card and also let the screen blank.

PM Timers :

User can set the HDD Power Down,Doze Mode,Standby Mode,
and Suspend Mode‘s time out period. The system will be
recovered when the system is re-activity.

PM Events :

If there is any activity occured on the list of the group,the
system will wake up. You can set the IRQ1,IRQ3-15
individually in the list.

4.6 PCI Configuration Setup

This screen help user configure their PCI bus slots. The PSC-486
supports 3 master PCI slots and one slave slot.

+

30

Slot 1-4 Using INT# : (for PSC-486 slot 4 not function)

Auto - BIOS will ask the PCI add-on card which INT#(A-D)
is used for interrupt.
BIOS will check out which IRQ is available for using.
BIOS will inform the PCI add-on card which IRQ have
been assigned to it.
A,B,C,D - These options are reserved for some PCI cards did
not allow BIOS to check out the card‘s status.
Before you set the A,B,C,or D,please make sure the
card‘s INT setting.

1st-4th Available IRQ :

The system BIOS will assign the PCI add-on card‘s IRQ under

the available priority.

PCI IRQ Activity by :

Level - Most PCI cards use the level trigger method.
Edge - Be sure the PCI cards use the edge trigger method
before you set it.

PCI IDE IRQ Map to :

PCI-Auto - BIOS will scan all PCI add-on cars and determine
the location of the PCI IDE devices.
PCI-Slot1 - Assign IRQ14 for primary IDE INT# and IRQ15
for secondary IDE INT# for the PCI-slot1
PCI-Slot2 - Assign IRQ14 for primary IDE INT# and IRQ15

31

for secondary IDE INT# for the PCI-slot2
PCI-Slot3 - Assign IRQ14 for primary IDE INT# and IRQ15
for secondary IDE INT# for the PCI-slot3
PCI-Slot4 - Assign IRQ14 for primary IDE INT# and IRQ15
for secondary IDE INT# for the PCI-slot4
ISA - The setting is for some PCI IDE cards which directly
connect the IRQ14 and IRQ15 to ISA slot thru a
cord. This cord is called the Legacy Header.

Appendix A. Watch-Dog Timer

The Watch-Dog Timer is provided to ensure that standalone systems
can always recover from catastrophic conditions that caused the CPU
to crash. This condition may have occurred by external EMI or a
software bug. When the CPU stops working correctly, hardware on the
board will either perform a hardware reset (cold boot) or a non­maskable interrupt (NMI) to bring the system back to a known state.

The Watch-Dog Timer is controlled by two I/O ports.

443
(hex)
043
(hex)

To enable the Watch-Dog Timer, a read from I/O port 443H must be
performed. This will enable and activate the countdown timer which
will eventually time out and either reset the CPU or cause an NMI
depending on the setting of JP27. To ensure that this reset condition
does not occur, the Watch-Dog Timer must be periodically refreshed

Read Enable the refresh the Watch-Dog Timer.

Read Disable the Watch-Dog Timer.

32

by reading the same I/O port 433H. This must be done within the time
out period that is selected by jumper group JP18.

A tolerance of at least 30% must be maintained to avoid unknown
routines within the operating system (DOS), such as disk I/O that can
be very time consuming. Therefore if the time out period has been set
to 10 seconds, the I/O port 443H must be read within 7 seconds.

Note: when exiting a program it is necessary to disable the Watch-Dog

Timer, otherwise the system will reset.

33

10 REM EXAMPLE PROGRAM
11 REM WATCH-DOG TIMER == WDT
20 GOSUB 5000 REM ENABLE AND REFRESH THE WDT
30 GOSUB 1000 REM TASK 1, 2 SECS
40 GOSUB 5000 REFRESH THE WDT
50 GOSUB 2000 REM TASK 2, 3 SECS
60 GOSUB 6000 REM DISABLE THE WDT
70 GOSUB 3000 REM TASK 3, 5 SECS
80 GOSUB 5000 REM ENABLE AND REFRESH THE WDT
90 GOTO 30

1000 REM SUBROUTINE #1

2 SECONDS TO COMPLETE

1070 RETURN

2000 REM SUBROUTINE #2

3 SECONDS TO COMPLETE

2070 RETURN

5000 REM SUBROUTINE TO ENABLE AND RESET WDT
5010 X = INP( &H443) REM ENABLE AND REFRESH TIMER
5020 RETURN

6000 REM SUBROUTINE TO DISABLE THE WDT
6010 X = INP( &H43) REM RESET WDT
6020 RETURN

34