SOLTEK SL-54A2 User manual

i
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
For more information, please visit http://www.soltek.com.tw
Edition: January 1997
Version: 2.0
SL-54A2/A5 SERIAL

Contents iii
Contents
Chapter 1: Introduction --------------------------------------- 1
Features -------------------------------------------------------------------------1
CPU ------------------------------------------------------------------------1
Chipset -------------------------------------------------------------------- 1
L2 Cache ------------------------------------------------------------------1
Main Memory ----------------------------------------------------------- 1
BIOS ------------------------------------------------------------------------ 2
Giga I/O Function------------------------------------------------------2
Other Functions --------------------------------------------------------- 2
Mainboard Setting for Pentium MMX-166----------------------------- 3
Chapter 2: Hardware Setup---------------------------------- 4
INTEL Pentium MMX CPUs Settings ----------------------------------- 4
Intel Pentium MMXÐ166/200/233 (Red Caps) ------------------4
AMD K6 CPU Settings------------------------------------------------------5
AMD K6 Ð PR166/200/233 (Red Caps) ---------------------------5
Cyrix M2 Settings (Pending) ---------------------------------------------- 6
Cyrix M2 Ð PR166/200/233 (Red Caps)---------------------------6
Cyrix 6x86L CPUs Setting (Red Caps)----------------------------- 7
Cyrix 6x86L Ð
PR120+/PR133+/PR150+/PR166+/PR200+ CPUs------- 7
Intel Pentium CPUs----------------------------------------------------------8
CPU 1.5X Clock Setting (Red Caps) -------------------------------- 8
Intel Pentium Ð 75/90/100 CPUs------------------------------8

iv
CPU 2.0X Clock Setting (Red Caps) -------------------------------- 8
Intel Pentium Ð 120/133 CPUs ---------------------------------8
CPU 2.5X Clock Setting (Red Caps) -------------------------------- 9
Intel Pentium Ð 150/166 CPUs ---------------------------------9
CPU 3.0X Clock Setting (Red Caps) -------------------------------- 9
Intel Pentium Ð 180/200 CPUs ---------------------------------9
Cyrix 6x86 CPUs ----------------------------------------------------------- 10
CPU 2.0X Clock Setting (Red Caps) ------------------------------ 10
Cyrix 6x86 Ð PR120+/PR133+/PR150+/PR166+/PR200+
CPUs---------------------------------------------------------------- 10
AMD CPUs ------------------------------------------------------------------ 11
AMD K5 Ð PR75/PR90/PR100/PR120/PR133 CPUs (Red
Caps) --------------------------------------------------------------------- 11
AMD K5 Ð PR150/PR166 CPUs (Red Caps) ------------------- 11
CPU Voltage Setting------------------------------------------------------- 12
Single Voltage Settings (Green Caps) ---------------------------- 12
For Intel Pentium P54C Family, Cyrix 6x86 Family,
AMD K5 (PR75 ~ PR166) Family ---------------------------- 12
Dual Voltage Settings (Green Caps) ----------------------------- 12
For Intel Pentium MMX (P55C) Family, Cyrix 6x86L/M2
Family, AMD K6 Family -------------------------------------- 12
System Memory Configuration----------------------------------------- 13
Jumper Settings ------------------------------------------------------------- 14
JP10, JP11: Bus Ratio Select ---------------------------------------- 14
JP6: Clear CMOS Data ---------------------------------------------- 15
JP8: ISA Clock Select ------------------------------------------------ 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

Contents v
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)-------------------------------------------- 23
USB1: USB Connector ----------------------------------------------- 24
J1 Switch Signal Summary ----------------------------------------- 25
J2 Switch Signal Summary ----------------------------------------- 26
Power Connector ----------------------------------------------------- 26
Chapter 3: Award 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 ------------------------------------------------------- 40
Integrated Peripherals ---------------------------------------------------- 41
Supervisor/User Password---------------------------------------------- 44
IDE HDD Auto Detection ------------------------------------------------ 45
Save & Exit Setup ---------------------------------------------------------- 45
Exit Without Saving ------------------------------------------------------- 45

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+~ PR166+MHz
(PR200+MHz is optional)
3. Supports AMD K5, K6 CPUs at PR75 ~ PR233
4. Provides SOCKET 7 ZIF Socket
5. Supports CPU dual voltage circuit.
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
Giga 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
8. Built-in RTC, CMOS, keyboard controller on single I/O
chip
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/M2, and AMD
K6 are dual voltage CPUs. JP7 and JP9 must be set
correctly (refer to page 12). Check with your CPU
supplier for CPU voltage specification.
3. Board maker doesnÕt give any guarantee on
compatibility and stability when using Cyrix 6x86(L)
PR200+CPU because it already is over 8340VX,
66MHz chipset 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
8680
Giga I/O
82371SB
82437VX
PB
SRAM
PB
SRAM 82438VX
82438VX
ISA SLOTS
Pentium
MMX
Socket 7
ZIF Socket
+
–
BAT
JP11
JP10
1
PRT
COM1 COM2
IMISC610
JP2 JP3 JP4
1
Reset
Power LED
SPK T/LED
J2
IR CON
HD/LED J1 SMI
Keylock
Heat Sink
#1#2#3#4
USB
1
TAG
JP8
JP6
1
JP7
1
25 6
BIOS
Heat Sink
1 4 7
JP9
Air Flow
Figure 1Ð1. SLÐ54A2/A5 Motherboard Layout

4
Chapter 2
Hardware Setup
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
Pentium
MMX
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Figure 2Ð1. CPU Type Configuration
Note: INTEL Pentium MMX (P55C) is a dual voltage CPU.
JP7 and JP9 must be set correctly (refer to page 12).
Check with your CPU supplier for CPU voltage
specification.

Hardware Installation 5
AMD K6 CPU Settings
AMD K6 – PR166/200/233
AMD K6–PR166/66
JP11
JP10
AMD K6–PR200/66
JP11
JP10
AMD K6–PR233/66
JP11
JP10
AMD
K6
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Figure 2Ð2. CPU Type Configuration
Note: AMD K6 is a dual voltage CPU. JP7 and JP9 must be set
correctly (refer to page 12). Check with your CPU
supplier for CPU voltage specification.

6
Cyrix M2 Settings (Pending)
Cyrix M2 – PR166/200/233
Pending Pending Pending
Cyrix
M2
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Figure 2Ð3. CPU Type Configuration (Pending)
Note: Cyrix M2 is a dual voltage CPU. JP7 and JP9 must be
set correctly (refer to page 12). Check with your CPU
supplier for CPU voltage specification.

Hardware Installation 7
Cyrix 6x86L CPUs Setting
Cyrix 6x86L – PR120+/PR133+/PR150+/PR166+/PR200+CPUs
Pentium
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Cyrix 6x86L – PR133+/55
JP2 JP3 JP4
1
JP8
Cyrix 6x86L – PR200+/75
JP2 JP3 JP4
1
JP8
Cyrix 6x86L – PR120+/50
JP2 JP3 JP4
1
JP8
Cyrix 6x86L – PR150+/60
Pentium – 120/60
JP2 JP3 JP4
1
1
JP8
Cyrix 6x86L – PR166+/66
Pentium – 133/66
JP2 JP3 JP4
JP8
Figure 2Ð4. CPU Type Configuration
Notes: 1. Cyrix 6x86L is a dual voltage CPU. JP7 and JP9
must be set correctly (refer to page 12). Check
with your CPU supplier for CPU voltage
specification.
2. The board maker doesnÕt give any guarantee on
compatibility and stability when using Cyrix
6x86(L) PR200+CPU because it already is over
the 82430VX, 66MHz chipset specification.

8
Intel Pentium CPUs
CPU 1.5X Clock Setting (Red Caps)
Intel Pentium – 75/90/100 CPUs
Pentium
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Pentium – 75/50
JP2 JP3 JP4
1
JP8
Pentium – 90/60
JP2 JP3 JP4
1
1
JP8
Pentium – 100/66
JP2 JP3 JP4
JP8
Figure 2Ð5. CPU Type Configuration
CPU 2.0X Clock Setting (Red Caps)
Intel Pentium – 120/133 CPUs
Pentium
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Pentium – 120/60
JP2 JP3 JP4
1
1
JP8
Pentium – 133/66
JP2 JP3 JP4
JP8
Figure 2Ð6. CPU Type Configuration

Hardware Installation 9
CPU 2.5X Clock Setting (Red Caps)
Intel Pentium – 150/166 CPUs
Pentium
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Pentium – 150/60
JP2 JP3 JP4
1
1
JP8
Pentium – 166/66
JP2 JP3 JP4
JP8
Figure 2Ð7. CPU Type Configuration
CPU 3.0X Clock Setting (Red Caps)
Intel Pentium – 180/200 CPUs
Pentium
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Pentium – 180/60
JP2 JP3 JP4
1
1
JP8
Pentium – 200/66
JP2 JP3 JP4
JP8
Figure 2Ð8. CPU Type Configuration

10
Cyrix 6x86 CPUs
CPU 2.0X Clock Setting (Red Caps)
Cyrix 6x86 – PR120+/PR133+/PR150+/PR166+/PR200+CPUs
Cyrix 6x86
CPU
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
Cyrix 6x86 – PR133+/55
JP2 JP3 JP4
1
JP8
Cyrix 6x86 – PR200+/75
JP2 JP3 JP4
1
JP8
Cyrix 6x86– PR120+/50
JP2 JP3 JP4
1
JP8
Cyrix 6x86 – PR150+/60
Pentium – 120/60
JP2 JP3 JP4
1
1
JP8
Cyrix 6x86 – PR166+/66
Pentium – 133/66
JP2 JP3 JP4
JP8
Figure 2Ð9 CPU Type Configuration
Note: The board maker doesnÕt give any guarantee on
compatibility and stability when using Cyrix
6x86(L) PR200+CPU because it already is over the
82430VX, 66MHz chipset specification.

Hardware Installation 11
AMD CPUs
AMD K5 – PR75/PR90/PR100/PR120/PR133 CPUs
(Red Caps)
AMD K5
CPU
1.5x clock
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
K5 – PR75/50
JP2 JP3 JP4
1
JP8
K5–PR90/60 (ID=0x50)
K5–PR120/60 (ID=0x51)
JP2 JP3 JP4
1
1
JP8
K5–PR100/66 (ID=0x50)
K5–PR133/66 (ID=0x51)
JP2 JP3 JP4
JP8
Figure 2Ð10. CPU Type Configuration
AMD K5 – PR150/PR166 CPUs (Red Caps)
AMD K5
CPU
2.5x clock
JP11
JP10
1
JP2 JP3 JP4
1
JP8
JP7
1
25 6
1 4 7
JP9
K5 – PR150/60
JP2 JP3 JP4
1
1
JP8
K5 – PR166/66
JP2 JP3 JP4
JP8
Figure 2Ð11. CPU Type Configuration

12
CPU Voltage Setting
Single Voltage Settings (Green Caps)
For Intel Pentium P54C Family, Cyrix 6x86 Family, AMD K5
(PR75 ~ PR166) Family
1 4 7
JP9
Pentium
JP7
1
25 6
3.38V CPU
3.52V CPU
1
25 6
1
25 6
Dual Voltage Settings (Green Caps)
For Intel Pentium MMX (P55C) Family, Cyrix 6x86L/M2 Family,
AMD K6 Family
1
25 6
1
25 6
VI/O = 3.38V
V CORE = 2.8V
(MMX, 6x86L, M2)
VI/O = 3.38V
V CORE = 2.9V (K6)
1 4 7
JP9
Pentium
MMX
6x86L
K6
CPU
JP7
V I/O
V CORE
Note: Make sure that CPU voltage setting is correct, otherwise,
CPU might get damaged.

Hardware Installation 13
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.

14
Jumper Settings
JP10, JP11: Bus Ratio Select
Set these jumpers according to your CPU clock.
Ratio JP10
JP11
1.5X
(default)
2X
2.5X
3X
Notice that the color of the cap is RED.
JP11
JP10
1
JP11
JP10
1
+
–