SOLTEK SL-54A2-S User manual

ii
Notice to End Users
This UserÕs Guide & Technical Reference is for assisting system
manufacturers and end users in setting up and installing the
mainboard.
Every effort has been made to ensure that the information in this
manual is accurate. Soltek Computer Inc. is not responsible for
printing or clerical errors. Information in this document is subject
to change without notice and does not represent a commitment on
the part of Soltek Computer Inc.
No part of this manual may be reproduced, transmitted, translated
into any language in any form or by any means, electronic or
mechanical, including photocopying and recording, for any purpose
without the express written permission of Soltek Computer Inc.
Companies and products mentioned in this manual are for
identification purposes only. Product names appearing in this
manual may or may not be registered trademarks or copyrights of
their respective companies.
SOLTEK COMPUTER INC. PROVIDES THIS MANUAL ÒAS ISÓ
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR
CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL SOLTEK COMPUTER
INC. BE LIABLE FOR ANY LOSS OR PROFITS, LOSS OF BUSINESS, LOSS
OF USE OR DATA, INTERRUPTION OF BUSINESS, OR FOR INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY
KIND, EVEN IF SOLTEK COMPUTER INC. HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR
ERROR IN THIS MANUAL OR PRODUCT.
© Copyright 1997 Soltek Computer Inc. All right reserved
Web site: http://www.soltek.com.tw
email: [email protected], [email protected]
Edition: July 1997
Version: 3.0
SL-54A2-S/54A5-S SERIAL

Contents iii
Contents
Chapter 1: Introduction --------------------------------------- 1
Features -------------------------------------------------------------------------1
CPU ------------------------------------------------------------------------1
Chipset -------------------------------------------------------------------- 1
L2 Cache ------------------------------------------------------------------1
Main Memory ----------------------------------------------------------- 1
BIOS ------------------------------------------------------------------------ 2
I/O Function -------------------------------------------------------------2
Other Functions --------------------------------------------------------- 2
Mainboard Setting for Pentium MMX-166----------------------------- 3
Chapter 2: Hardware Setup---------------------------------- 4
JP7: CPU VCore Voltage Setting----------------------------------------- 4
Voltage Settings ---------------------------------------------------------4
INTEL Pentium MMX CPUs Settings ----------------------------------- 5
Intel Pentium MMXÐ166/200/233 ---------------------------------5
AMD K6 CPU Settings------------------------------------------------------6
AMD K6Ð166/200/233 ------------------------------------------------6
AMD K6 CPU Settings------------------------------------------------------7
AMD K6Ð266/300/333/366------------------------------------------7
Cyrix 6x86MX (M2) Settings ---------------------------------------------- 8
Cyrix 6x86MX (M2) Ð PR166/200/233 ---------------------------- 8
Cyrix 6x86L CPUs Setting -------------------------------------------- 9
Cyrix 6x86L Ð
PR120+/PR133+/PR150+/PR166+/PR200+ CPUs------- 9
Intel Pentium CPUs-------------------------------------------------------- 10
CPU 1.5X Clock Setting (Red Caps) ------------------------------ 10
Intel Pentium Ð 75/90/100 CPUs---------------------------- 10
CPU 2.0X Clock Setting (Red Caps) ------------------------------ 10
Intel Pentium Ð 120/133 CPUs ------------------------------- 10
CPU 2.5X Clock Setting (Red Caps) ------------------------------ 11
Intel Pentium Ð 150/166 CPUs ------------------------------- 11
CPU 3.0X Clock Setting (Red Caps) ------------------------------ 11

iv
Intel Pentium Ð 180/200 CPUs ------------------------------- 11
Cyrix 6x86 CPUs ----------------------------------------------------------- 12
CPU 2.0X Clock Setting (Red Caps) ------------------------------ 12
Cyrix 6x86 Ð
PR120+/PR133+/PR150+/PR166+/PR200+ CPUs----- 12
AMD CPUs ------------------------------------------------------------------ 13
AMD K5 Ð PR75/PR90/PR100/PR120/PR133 CPUs (Red
Caps) --------------------------------------------------------------------- 13
AMD K5 Ð PR150/PR166 CPUs (Red Caps) ------------------- 13
System Memory Configuration----------------------------------------- 14
Jumper Settings ------------------------------------------------------------- 15
JP10, JP11, JP16: Bus Ratio Select--------------------------------- 15
JP6: Clear CMOS Data ---------------------------------------------- 16
JP2, JP3, JP4: External Bus Frequency Select------------------- 17
Connectors ------------------------------------------------------------------- 18
KB1: Keyboard Connector ----------------------------------------- 18
MS1: PS/2 Mouse Connector ------------------------------------- 18
PRT: Parallel Port ---------------------------------------------------- 19
COM1 /COM2: Serial Port Connectors ------------------------ 19
FDC: Floppy Drive Connector ------------------------------------ 20
IDE1/IDE2: Primary/Secondary IDE Connectors----------- 20
Power Connector ----------------------------------------------------- 21
IDE LED Activity Light: (J1 pin1Ð4)------------------------------ 22
Infrared Port Module Connector (J1 pin6Ð10) ----------------- 22
J1 pin12, 13: Reserved ----------------------------------------------- 22
SMI Switch (J1 pin14, 15)-------------------------------------------- 22
Speaker Connector (J2 pin1Ð4) ------------------------------------ 22
Reset Switch (J2 pin5, 6)--------------------------------------------- 22
Power LED and Keylock Switch (J2 pin8Ð12)------------------ 22
Turbo LED (J2 pin14, 15)-------------------------------------------- 22
USB1: USB Connector ----------------------------------------------- 24
J1 Switch Signal Summary ----------------------------------------- 25
J2 Switch Signal Summary ----------------------------------------- 26
Power Connector ----------------------------------------------------- 26
Chapter 3: BIOS Setup ---------------------------------------27
Standard CMOS Setup ---------------------------------------------------- 28
BIOS Features Setup ------------------------------------------------------- 30
Chipset Features Setup --------------------------------------------------- 33
Power Management Setup ----------------------------------------------- 36
PnP/PCI Configuration Setup ------------------------------------------ 38
Load Setup Defaults ------------------------------------------------------- 39

Contents v
Integrated Peripherals ---------------------------------------------------- 40
Supervisor/User Password---------------------------------------------- 43
IDE HDD Auto Detection ------------------------------------------------ 44
Save & Exit Setup ---------------------------------------------------------- 44
Exit Without Saving ------------------------------------------------------- 44

Introduction 1
Chapter 1
Introduction
Features
CPU
1. Supports Intel Pentium P54C/MMX (P55C) CPUs at 75
~ 233 MHz
2. Supports Cyrix 6x86(L) CPUs at PR120+~ PR200+MHz,
6x86MX (M2) Ð PR166+~ PR266+MHz
3. Supports AMD K5: PR75 ~ PR200 and K6: 166 ~ 366
CPUs
4. Provides SOCKET 7 ZIF Socket
5. Supports CPU voltage autodetect circuit with switching
technology.
Chipset
1. Intel 82430VX chipset
2. PCI Rev 2.1 compliant
L2 Cache
1. Onboard supports 256K/512k write back cache with
Pipelined Burst SRAMs
Main Memory
1. Memory range from 4MB (minimum) to 128MB
(maximum) with DRAM Table Free configurations
2. Supports Fast Page Mode/EDO/BEDO/Synchronous
DRAM with 60ns/70ns DRAM speed
3. Supports 4 pcs 72pin SIMM sockets and 2 pcs 168pin
DIMM sockets (3.3V unbuffered type)

2
BIOS
1. AWARD Plug and Play BIOS
2. Supports Advanced Power Management Function
3. Flash Memory for easy upgrade
I/O Function
1. Integrated USB (Universal Serial Bus) controller with
two USB ports.
2. Supports 2 IDE channels with 4IDE devices (including
120MB IDE floppy)
3. Provides PCI IDE Bus Master function
4. One floppy port (including 3.5", 1.2MB Mode 3 function)
5. Two high speed 16550 FIFO UART ports
6. One parallel port with EPP/ECP/SPP capabilities
7. PS/2 mouse connector
Other Functions
1. BABY AT size 22cm x 25cm
2. 4 PCI Master slots and 4 ISA slots
3. Supports SCSI/CD-ROM Boot function.
Note: 1. Make sure that the SDRAM module not only has to
be 168 pin DIMM but designed for 3.3V SDRAM as
well. Double check with the SDRAM supplier before
install any SDRAMs. The mainboard manufacturer
has no obligation to any damage of the board by using
the incorrect specification of SDRAM.
2. Pentium MMX (P55C), Cyrix 6x86L/6x86MX (M2),
and AMD K6 are dual voltage CPUs. JP7 must be
set correctly (refer to page 4). Check with your CPU
supplier for CPU voltage specification.

Introduction 3
Mainboard Setting for Pentium MMX-166
The settings of the following figure is for the Pentium MMX-
166 with the 256K cache. To get the best cooling effect, make
sure that the airflow from the CPU fan is facing the heatsink.
(MMX is dual voltage CPU, do not use this setting if CPU is
not MMX or 6x86L.)
PCI4
PCI SLOTS
PCI2 PCI3
SIMM1 SIMM2 SIMM3 SIMM4
SIMM5 (3.3V Unbuffered type) SIMM6 (3.3V Unbuffered type)
IDE2
IDE1
Power
KB1
PCI1
MS1
FDC1
I/O
82371SB
82437VX
PB
SRAM
PB
SRAM 82438VX
82438VX
ISA SLOTS
Pentium
MMX
Socket 7
ZIF Socket
(2.8V)
+
–
BAT
JP11
JP10
JP16
1
PRT
COM1 COM2
IMISC610
JP2 JP3 JP4
1
Reset
Power LED
SPK T/LED
J2
IR CON
HD/LED J1 SMI
Keylock
#1#2#3#4
USB
1
TAG
JP6
1
JP7
1
27 8
BIOS
Heat Sink
Air Flow
8042
Power
Circuit
COIL
COIL
Figure 1Ð1. SLÐ54A2-S/A5ÐS Motherboard Layout

4
Chapter 2
Hardware Setup
JP7: CPU V
Core
Voltage Setting
Voltage Settings
3.5V
Pentium
6x86
K5
3.0V
2.9V
K6Ð166/200
6x86MX
2.8V
MMX
6x86L
2.7V
2.6V
2.4V
2.3V
2.2V
2.1V
K6Ð233
(or higher)
3.2V
K6Ð233
(or higher)
2.0V
VCore
Voltage
2.5V
1
2
8
7
1
2
8
7
1
2
8
7
1
2
8
7
JP7 VCore
Voltage
1
2
8
7
1
2
8
7
1
2
8
7
1
2
8
7
JP7
3.1V
VCore
Voltage
1
2
8
7
1
2
8
7
1
2
8
7
1
2
8
7
JP7
3.4V
3.3V
VCore
Voltage
1
2
8
7
1
2
8
7
1
2
8
7
1
2
8
7
JP7
*: These settings are not listed on PCB text.
Note: 1. Refer to the table above to choose the correct voltage
for the CPU everytime that you install a CPU.
2. K6-233 (or higher) has two kinds of
specifications: 3.2V or 2.1V which depends on
its processor. Refer to the CPUÕs surface
description.
3. Make sure that your JP7 is matched with the CPU
voltage, otherwise will damage the CPU or make the
system unstable.
4. When the new CPU is announced and is not listed
on this manual, please refer to the above table, select
the correct voltage setting for it.

Hardware Installation 5
INTEL Pentium MMX CPUs Settings
Intel Pentium MMX–166/200/233
Pentium MMX–166/66
JP11
JP10
Pentium MMX–200/66
JP11
JP10
Pentium MMX–233/66
JP11
JP10
JP16 JP16 JP16
Pentium
MMX
JP11
JP10
JP16
1
JP2 JP3 JP4
1
Power
Circuit
COIL
COIL
JP7
(2.8V)
Figure 2Ð1. CPU Type Configuration
Note: INTEL Pentium MMX (P55C) is a dual voltage CPU.
JP7 must be set correctly (refer to page 4). Check with
your CPU supplier for CPU voltage specification.

6
AMD K6 CPU Settings
AMD K6–166/200/233
JP11
JP10
JP16
1
AMD K6–166/66 AMD K6–200/66 AMD K6–233/66
AMD
K6
JP2 JP3 JP4
1
JP7
Power
Circuit
COIL
COIL
AMD K6–166/200
(2.9V)
AMD K6–233 (Note)
(3.2V) (2.1V)
JP11
JP10
JP16
JP11
JP10
JP16
JP11
JP10
JP16
JP7
OR
Figure 2Ð2. CPU Type Configuration
Note: 1. AMD K6 is a dual voltage CPU. JP7 must be set
correctly (refer to page 4). Check with your CPU
supplier for CPU voltage specification.
2. K6-233 (or higher) has two kinds of specifications:
3.2V or 2.1V which depends on its process. Refer to
the CPUÕs surface description.

Hardware Installation 7
AMD K6 CPU Settings
AMD K6–266/300/333/366
JP7
JP11
JP10
JP16
1
AMD K6–266/66
AMD K6–300/66
AMD K6–333/66
AMD
K6
JP2 JP3 JP4
1
JP7
Power
Circuit
COIL
COIL
AMD K6–266/300/333/366 (Note)
(3.2V) (2.1V)
JP11
JP10
JP16
JP11
JP10
JP16 JP11
JP10
JP16
AMD K6–366/66
JP11
JP10
JP16
OR
Figure 2Ð3. CPU Type Configuration
Note: 1. AMD K6 is a dual voltage CPU. JP7 must be set
correctly (refer to page 4). Check with your CPU
supplier for CPU voltage specification.
2. K6-233 (or higher) has two kinds of specifications:
3.2V or 2.1V which depends on its process. Refer to
the CPUÕs surface description.

8
Cyrix 6x86MX (M2) Settings
Cyrix 6x86MX (M2) – PR166/200/233
6x86MX–PR166
Cyrix
6x86MX
JP2 JP3 JP4
1
JP7
(2.9V)
Power
Circuit
COIL
COIL
JP11
JP10
JP16
1
JP11
JP10
JP16
6x86MX–PR150
JP11
JP10
JP16
6x86MX–PR200 6x86MX–PR233
JP11
JP10
JP16
JP11
JP10
JP16
6x86MX–PR266
JP11
JP10
JP16
JP2 JP3
1
JP4
6x86MX – PR166
JP2 JP3
1
JP4
6x86MX – PR150/200/233
JP2 JP3
1
JP4
6x86MX – PR266
11111
Figure 2Ð4. CPU Type Configuration
Note: Cyrix 6x86MX (M2) is a dual voltage CPU. JP7 must
be set correctly (refer to page 4). Check with your CPU
supplier for CPU voltage specification.

Hardware Installation 9
Cyrix 6x86L CPUs Setting
Cyrix 6x86L – PR120+/PR133+/PR150+/PR166+/PR200+CPUs
JP7
(2.8V)
Cyrix
6x86L
JP11
JP10
JP16
1
JP2 JP3 JP4
1
Cyrix 6x86L – PR133+/55
JP2 JP3 JP4
1
Cyrix 6x86L – PR200+/75
JP2 JP3 JP4
1
Cyrix 6x86L – PR120+/50
JP2 JP3 JP4
1
Cyrix 6x86L – PR150+/60
JP2 JP3 JP4
1
1
Cyrix 6x86L – PR166+/66
JP2 JP3 JP4
Power
Circuit
COIL
COIL
Figure 2Ð5. CPU Type Configuration
Notes: Cyrix 6x86L is a dual voltage CPU. JP7 must be set
correctly (refer to page 4). Check with your CPU
supplier for CPU voltage specification.

10
Intel Pentium CPUs
CPU 1.5X Clock Setting (Red Caps)
Intel Pentium – 75/90/100 CPUs
JP7
(3.52V)
Power
Circuit
COIL
COIL
Pentium
JP11
JP10
JP16
1
JP2 JP3 JP4
1
Pentium – 75/50
JP2 JP3 JP4
1
Pentium – 90/60
JP2 JP3 JP4
1
1
Pentium – 100/66
JP2 JP3 JP4
Figure 2Ð6. CPU Type Configuration
CPU 2.0X Clock Setting (Red Caps)
Intel Pentium – 120/133 CPUs
JP7
(3.52V)
Pentium
JP11
JP10
JP16
1
JP2 JP3 JP4
1
Pentium – 120/60
JP2 JP3 JP4
1
1
Pentium – 133/66
JP2 JP3 JP4
Power
Circuit
COIL
COIL
Figure 2Ð7. CPU Type Configuration

Hardware Installation 11
CPU 2.5X Clock Setting (Red Caps)
Intel Pentium – 150/166 CPUs
JP7
(3.52V)
Pentium – 150/60
JP2 JP3 JP4
1
1
Pentium – 166/66
JP2 JP3 JP4
Pentium
JP11
JP10
JP16
1
JP2 JP3 JP4
1
Power
Circuit
COIL
COIL
Figure 2Ð8. CPU Type Configuration
CPU 3.0X Clock Setting (Red Caps)
Intel Pentium – 180/200 CPUs
JP7
(3.52V)
1
Pentium – 180/60
JP2 JP3 JP4
1
1
Pentium – 200/66
JP2 JP3 JP4
Pentium
JP11
JP10
JP16
1
JP2 JP3 JP4
1
Power
Circuit
COIL
COIL
Figure 2Ð9. CPU Type Configuration

12
Cyrix 6x86 CPUs
CPU 2.0X Clock Setting (Red Caps)
Cyrix 6x86 – PR120+/PR133+/PR150+/PR166+/PR200+CPUs
JP7
(3.52V)
Cyrix 6x86
CPU
1
Cyrix 6x86 – PR133+/55
JP2 JP3 JP4
1
Cyrix 6x86 – PR200+/75
JP2 JP3 JP4
1
Cyrix 6x86– PR120+/50
JP2 JP3 JP4
1
Cyrix 6x86 – PR150+/60
JP2 JP3 JP4
1
1
Cyrix 6x86 – PR166+/66
JP2 JP3 JP4
JP11
JP10
JP16
1
JP2 JP3 JP4
1
Power
Circuit
COIL
COIL
Figure 2Ð10 CPU Type Configuration

Hardware Installation 13
AMD CPUs
AMD K5 – PR75/PR90/PR100/PR120/PR133 CPUs
(Red Caps)
JP7
(3.52V)
1
JP11
JP10
JP16
1
AMD K5
CPU
1.5x clock
K5 – PR75/50
JP2 JP3 JP4
1
K5–PR90/60 (ID=0x50)
K5–PR120/60 (ID=0x51)
JP2 JP3 JP4
1
1
K5–PR100/66 (ID=0x50)
K5–PR133/66 (ID=0x51)
JP2 JP3 JP4
JP2 JP3 JP4
1
Power
Circuit
COIL
COIL
Figure 2Ð11. CPU Type Configuration
AMD K5 – PR150/PR166 CPUs (Red Caps)
JP7
(3.52V)
1
1
AMD K5
CPU
2.5x clock
K5 – PR150/60
JP2 JP3 JP4
K5 – PR166/66
JP2 JP3 JP4
JP2 JP3 JP4
1
1
JP11
JP10
JP16
1
Power
Circuit
COIL
COIL
Figure 2Ð12. CPU Type Configuration

14
System Memory Configuration
This 82430VX motherboard supports 72-pin SIMMs of 4MB,
8MB, 16MB, or 32MB to form a memory size between 8MB
to 128MB. Follow the chart below to install the memory
modules.
Bank 0
SIMM 3 & 4 or 6 Bank 1 SIMM 1 & 2 or5 Total Memory
4MB x 2
8MB x 2
16MB x 2
32MB x 2
None
None
None
None
8MB
16MB
32MB
64MB
None
None
None
None
4MB x 2
8MB x 2
16MB x 2
32MB x 2
8MB
16MB
32MB
64MB
4MB x 2
4MB x 2
4MB x 2
4MB x 2
4MB x 2
8MB x 2
16MB x 2
32MB x 2
16MB
24MB
40MB
72MB
8MB x 2
8MB x 2
8MB x 2
8MB x 2
4MB x 2
8MB x 2
16MB x 2
32MB x 2
24MB
32MB
48MB
80MB
16MB x 2
16MB x 2
16MB x 2
16MB x 2
4MB x 2
8MB x 2
16MB x 2
32MB x 2
40MB
48MB
64MB
96MB
32MB x 2
32MB x 2
32MB x 2
32MB x 2
4MB x 2
8MB x 2
16MB x 2
32MB x 2
72MB
80MB
96MB
128MB
Notes: 1. You canÕt install any RAM module in SIMM 5 or 6
when there are RAM modules already installed in the
same bank.
2. The 82430VX chipset supports Òtable freeÓ function
and the above table is just a reference.

Hardware Installation 15
Jumper Settings
JP10, JP11, JP16: Bus Ratio Select
Set these jumpers according to your CPU clock.
Ratio
JP16,
JP10,
JP11
1.5X/3.5X*
(default)
2.0X
2.5X
3.0X
4.0X+
4.5X+
5.0X+
5.5X+
Ratio
JP16,
JP10,
JP11
*: This setting is 3.5X if using for MMX/K6; +: For K6 only.
Notice that the color of the cap is RED.
JP11
JP10
JP16
1
JP11
JP10
JP16
1
+
–
CPU
BIOS