Micronics JX30WB VL-BUS User Manual

JX30WB VL/ISA

SYSTEM BOARD

MANUAL

Specification Subject to Change Without Notice

Copyright 1994, Micronics Computers, Inc.

All Rights Reserved

Printed in USA

MICRONICS

JX30WB VL/ISA

SYSTEM BOARD

MANUAL

Document Number: 06-00192-01, Rev 1B

232 E. Warren Ave., Fremont, CA 94539-7085

August 1994

Copyright Notices

Micronics Computers, Inc.

The information contained in the JX30WB VL/ISA system
board manual has been carefully checked and is believed to
be accurate. Micronics assumes no responsibility for any
inaccuracies that may be contained in this document.
Micronics makes no commitments to update or to keep the
information in this manual at a current level when changes
are made to the product.

Micronics reserves the right to make improvements to this
document and/or product at any time and without notice.

No part of this document may be photocopied, reproduced,
translated, or reduced to any medium or machine form
without prior, written consent from Micronics.

COPYRIGHT (C) 1994, Micronics Computers, Inc.

232 E. Warren Ave., Fremont, California 94539-7085

Portions of the Manual

Portions of this manual were copied (with permission) from
Phoenix Technologies, Ltd. Copyright 1994. All rights
reserved.

Trademarks

IBM is a registered trademark of International Business Machines.
Microsoft, Microsoft Word, Windows are registered trademarks of Microsoft
Corporation.
Intel and PCI are registered trademarks of Intel Corporation.
UNIX is a registered trademark of AT&T Corporation.
Lotus 1-2-3 is a registered trademark of Lotus Development Corp.

Micronics Computers, Inc.ii

Table of Contents

Copyright Notices ............................................................................. ii

Micronics Computers, Inc. ................................ ............................ ii

Portions of the Manual ................................ ................................ ..ii

Trademarks ................................................................ ................... ii

Chapter 1: Introduction................................ .................................1-1

Features................................ ...................................................... 1-2

Software Compatibility .............................................................. 1-3

Chapter 2: Setting Up the JX30WB ................................ ..............2-1

Precautions................................ ................................................. 2-1

Static Electricity ................................ ................................ .........2-1

Office Environment................................ .................................... 2-1

JX30WB Components ................................ ............................... 2-2

Jumper Settings................................ .......................................... 2-3

Chapter 3: Installing Add-On Peripherals and System Memory ...3-1

Installing a VL-Bus Card ................................ ........................... 3-1

Cache Memory................................ ........................................... 3-2

System Memory ................................................................ .........3-3

Installing the SIMMs ................................ .................................3-3

Removing the SIMMs ................................................................ 3-4

Memory Configuration .............................................................. 3-4

SIMM-Types Supported ................................ ............................ 3-5

Installing an Enhanced CPU ................................ ...................... 3-5

Installing Cache Memory ................................ ........................... 3-6

128K of Level 2 Cache ........................................................... 3-7

Write-Through................................ .................................... 3-7

Write-Back ................................ ................................ ......... 3-7

256K of Level 2 Cache ........................................................... 3-8

Write-Through................................ .................................... 3-8

Write-Back ................................ ................................ ......... 3-8

512K of Level 2 Cache ........................................................... 3-9

Write-Through................................ .................................... 3-9

Write-Back ................................ ................................ ......... 3-9

Micronics Computers, Inc. iii

Table of Contents (Cont’d)

Chapter 3 (Cont’d)

1MB of Level 2 Cache ................................ ......................... 3-10

Write-Through ................................ ................................. 3-10

Write-Back ................................................................ ....... 3-10

Chapter 4: Installing and Configuring the JX30WB .................... 4-1

Installation ................................................................ ................. 4-1

Tools Required ................................................................ .......... 4-1

Equipment Required ................................ .................................. 4-2

Configuration................................................................ ............. 4-2

Initial Boot Up ................................................................ ........... 4-3

Setup................................................................ .......................... 4-3

Running The Setup Procedure ................................ ................... 4-4

Setting the CMOS Main Screen ................................ ................. 4-6

System Time and Date ........................................................... 4-6

Diskette A or B ................................................................ ...... 4-6

Hard Disk 1, 2, 3, or 4 ................................ ........................... 4-6

Base Memory and Extended Memory ................................ ... 4-6

Video Card................................ ............................................. 4-7

System Speed................................ ......................................... 4-7

CPU Type ................................ .............................................. 4-7

Cache State ................................................................ ............ 4-7

External Cache Mode ............................................................. 4-8

Setting the CMOS Extended Screen ................................ .......... 4-8

System BIOS ................................ ......................................... 4-8

Video BIOS ................................ ........................................... 4-8

On-Board Floppy ................................ ................................... 4-9

Primary IDE ................................................................ ........... 4-9

Master Speed................................ ...................................... 4-9

Slave Speed................................ ........................................ 4-9

Secondary IDE ................................................................ ..... 4-10

Serial Port 1 (Com 1) ........................................................... 4-10

Serial Port 2 (Com 2) ........................................................... 4-10

Parallel Port (LPT) ............................................................... 4-10

Parallel Port Mode ................................ ............................... 4-11

Standby Break Event IRQ ................................ .................... 4-11

Micronics Computers, Inc.iv

Energy Saving Timer ................................ ........................... 4-11

Table of Contents (Cont’d)

Chapter 4 (Cont’d)

Non-Cacheable Area ............................................................ 4-12

Keyboard................................ .............................................. 4-12

System Password................................ ..................................4-13

Setup Password ................................................................ ....4-13

Re-Configuring Your Computer ................................ .............. 4-14

Appendix A: Post and Boot Error Messages ................................ A-1

Appendix B: Beep Codes ............................................................. B-1

Appendix C: Hard Disk Types ................................ ..................... C-1

Appendix D: Specifications ................................ ......................... D-1

Battery Disposal ................................................................ ........D-3

Environmental Specifications ................................................... D-3

Temperature Range ................................ ............................... D-3

Relative Humidity (Non-Condensing) ................................ ..D-3

Glossary................................ ........................................................ G-1

Limited Warranty................................ ......................................... W-1

List of Figures

Figure 2-1. JX30WB Rev. 1B System Board ................................ 2-2

Figure 3-1. Inserting a VESA Local Bus Card ............................... 3-2

Figure 3-2. Installing the SIMM ................................ .................... 3-3

Figure 3-3. Installing 128K of Level 2 Cache ................................ 3-7

Figure 3-4. Installing 256K of Level 2 Cache ................................ 3-8

Figure 3-5. Installing 512K of Level 2 Cache ................................ 3-9

Figure 3-6. Installing 1MB of Level 2 Cache .............................. 3-10

Figure 4-1. Power-Up Screen ................................ ......................... 4-3

Figure 4-2. CMOS Main Screen ................................ .................... 4-4

Figure 4-3. CMOS Extended Screen .............................................. 4-5

Figure 4-4. Exit Pop-up Screen .................................................... 4-14

Micronics Computers, Inc. v

Table of Contents (Cont’d)

List of Tables

Table 2-1. BIOS Operation Selection ............................................ 2-3

Table 2-2. Video Monitor Display Selection ................................ . 2-3

Table 2-3. Printer Port Configuration Selection ............................ 2-4

Table 2-4. CMOS Reset Selection ................................ ................. 2-4

Table 2-5. SMI Configuration Selection ................................ ........ 2-5

Table 2-6. Local Bus IDE Selection .............................................. 2-5

Table 2-7. CPU Clock Selection .................................................... 2-5

Table 2-8. Cache Size Selection ................................ .................... 2-6

Table 2-9. CPU Type Selection (Jumpers W11-W21) ................... 2-7

Table 2-10. CPU Type Selection (Jumpers W22-W28) ................. 2-8

Table 2-11. Reserved Jumpers ................................ ....................... 2-9

Table 2-12. Peripheral and Case Connections ............................. 2-10

Table 3-1. DRAM Memory Configuration .................................... 3-4

Table A-1. POST Messages ................................ ...........................A-1

Table B-1. Beep Codes ................................ ..................................B-2

Table C-1. Hard Disk Types .......................................................... C-1

Micronics Computers, Inc.vi

Introduction

1

The Micronics JX30WB system board is Micronics’ fourth
generation VL-Bus system board, offering outstanding
features for building an advanced personal computer or
workstation.

The JX30WB supports all 486 processors, including the
new Intel DX4-100 processor, which requires a 3.3 volt
power supply. The system board automatically senses the
type of CPU and its voltage requirements, then configures
itself accordingly. In addition, the JX30WB utilizes level 1
write-back cache now available on the latest 486 processors.

The JX30WB is also a "Green board," which means it
adheres to the Environmental Protection Agency’s strict
Energy Star efficiency guidelines. The system board can
reduce power to consume less energy, thus making it a
more efficient system board.

The system board comes complete and ready to be installed.
It is designed to be installed with minimal or no help.

Micronics Computers, Inc. 1-1

Introduction JX30WB System Board

Features

The JX30WB includes the following features:

• Two 32-bit VL-Bus\ISA slots and five 16-bit ISA slots.

• 100% VESA VL-Bus compliant.

• EPA Energy Star compliant when used with other

energy efficient components. User-defined time
intervals.

• Micronics’ JX30WB chip set, with Mode 3 VL IDE

controller.

• Supports up to 128MB of on-board Memory.

• 4-layer, Baby AT form-factor (13" X 8.5").

• Supports the following processors (write-through and

write-back cache versions) in the Zero Insertion Force
(ZIF) CPU socket:

− 486SX 25 or 33MHz

− 486 SX2 50MHz

− 486 DX 33MHz

− 486 DX2 50 or 66MHz

− 486 DX4 75 or 100MHz

1-2 Micronics Computers, Inc.

JX30WB System Board Introduction

Software Compatibility

The JX30WB system board has been tested thoroughly
under a variety of software packages. A sampling of
programs include products by Microsoft, Novell, IBM, and
Santa Cruz Operation.

Micronics Computers, Inc. 1-3

Introduction ................................................................ ................... 1-1

Features................................ ...................................................... 1-2

Software Compatibility .............................................................. 1-3

Micronics Computers, Inc. 1-1

Setting Up the JX30WB

2

Precautions

Although the JX30WB system board is securely packed in
its shipping container, use care while unpacking the system
board. After unpacking the JX30WB, place it on its anti­static bag. Carefully inspect the board for damage that may
have occurred during shipment, making sure the jumper
pins are not bent.

Static Electricity

The JX30WB is shipped in an anti-static bag; however, it is
still important that you and your work area are static free.
Ground yourself first and then ground the board.

Office Environment

When installing the JX30WB, make sure the finished
product is in an area with good ventilation. The system
should not be in direct sunlight; near heaters; or exposed to
moisture, dust, or dirt.

Micronics Computers, Inc. 2-1

Setting Up the JX30WB JX30WB System Board

the manufacturer. Discard used batteries according to the manufacturer’s instructions.

JX30WB Components

Danger of explosion if battery is incorrectly replaced. The battery should only be
replaced by an authorized technician, using the same or equivalent recommended by

Figure 2 -1. JX30WB Rev. 1B System Board

2-2 Micronics Computers, Inc.

JX30WB System Board Setting Up the JX30WB

Jumper

Setting

W1

BIOS Recovery

Normal (Default)

1-2

2-3

W31

BIOS

Write Protect (Default)

BIOS Write Enable

1-2

Open

Jumper

Setting

Color (Default)

Monochrome

1-2

Open

NOTE: Refer to Appendix D for battery disposal

instructions.

Jumper Settings

Table 2-1 lists jumper settings for the BIOS operation.

Table 2-1. BIOS Operation Selection

Function

NOTE: Jumper W31 must be reconfigured to update

(Flash) the BIOS. If problems occur during the
flash procedure, reset W1 to the BIOS Recovery
Mode. A special diskette is also needed for the
recovery mode. Refer to your computer dealer for
the Flash Utility diskette and the special recovery
diskette, or call Micronics’ BBS number at (510)
651-6837 to download the utility.

Micronics Computers, Inc. 2-3

Table 2-2 lists jumper settings for the type of video monitor
display used with the system board.

Table 2-2. Video Monitor Display Selection

Function

W2

Setting Up the JX30WB JX30WB System Board

2-4 Micronics Computers, Inc.

JX30WB System Board Setting Up the JX30WB

Jumper

Setting

W3

ECP uses DMA1

ECP uses DMA3

ECP Disabled (Default)

1-2

2-3

Open

W4

ECP uses DMA1

ECP uses DMA3

ECP Disabled (Default)

1-2

2-3

Open

W8

IRQ 7 (Default)

IRQ 5

1-2

2-3

Jumper

Setting

W5

Normal (Default)

Reset CMOS

1-2

2-3

Jumper Settings (Cont’d)

Table 2-3 lists jumper settings for the printer port
configuration.

Table 2-3. Printer Port Configuration Selection

Function

Table 2-4 lists jumper settings for the CMOS reset
selection.

Micronics Computers, Inc. 2-5

Table 2-4. CMOS Reset Selection

Function

WARNING: Power must be off during CMOS reset

procedure.

Setting Up the JX30WB JX30WB System Board

Jumper

Setting

Break Switch Function

Normal (Default

1-2

2-3

Jumper

Setting

W7

Local IDE Enable (Default)

Local IDE Disable

1-2

2-3

Jumper

Setting

W10

25 MHz

33 MHz

Open

1-2

Jumper Settings (Cont’d)

Table 2-5 lists jumper settings for the SMI configuration.

Table 2-5. SMI Configuration Selection

Function

W6

)

Table 2-6 lists jumper settings for the Local Bus IDE.

Table 2-6. Local Bus IDE Selection

Function

Table 2-7 lists jumper settings for the CPU Clock selection.

2-6 Micronics Computers, Inc.

Table 2-7. CPU Clock Selection

Function

JX30WB System Board Setting Up the JX30WB

1-2

1-2

1-2

1-2 & 3-4

Open

2-3

2-3

1-2

2-3 & 4-5

Open

2-3

1-2

1-2

1-2 & 3-4

1-21M2-3

2-3

2-3

2-3 & 4-5

1-2

Jumper Settings (Cont’d)

Table 2-8 lists jumper settings for level 2 cache
configuration selections.

Table 2-8. Cache Size Selection

Cache W13 W14 W15 W17 W30

128K
256K
512K

Micronics Computers, Inc. 2-7

Setting Up the JX30WB JX30WB System Board

1-2

3-4

1-2

Open

1-2

2-3

Open

1-2

3-4

1-2

Open

1-2

2-3

Open

1-2

3-4

2-3

Open

1-2

2-3

1-2

DX4 (3X)

1-2

3-4

2-3

Open

2-3

2-3

Open

DX4 (2.5X)

1-2

3-4

2-3

1-2

2-3

2-3

Open

DX4 (2X)

1-2

3-4

2-3

2-3

2-3

2-3

Open

486 DX2-SL

1-2

3-4

2-3

Open

2-3

2-3

Open

486 DX-SL

1-2

3-4

2-3

Open

2-3

2-3

Open

486 SX-SL

2-3

Open

Open

2-3

2-3

Open

486 DX/DX2

1-2

3-4

2-3

Open

2-3

2-3

Open

AM486 DXL

1-2

3-4

2-3

Open

2-3

2-3

Open

486 SX

2-3

Open

Open

2-3

2-3

Open

487 SX

2-3

1-2

Open

2-3

2-3

Open

M7 (5V)

1-2

3-4

2-3

Open

2-3

1-2

Open

M7 (3.3V)

1-2

3-4

2-3

Open

2-3

1-2

Open

Jumper Settings (Cont’d)

Table 2-9 lists jumper W11 through W21 settings for the
type of 486 CPU used on the system board.

Table 2-9. CPU Type Selection (Jumpers W11-W21)

CPU W11 W12 W18 W19 W20 W21

P24T

P24CT

P24D

2-8 Micronics Computers, Inc.

JX30WB System Board Setting Up the JX30WB

P24T (5V)

Open

1-2

1-2

1-2

1-2

1-2

3-4

P24CT (3.3V)

Open

1-2

1-2

1-2

1-2

1-2

3-4

3-4

P24D (L1 WB)

2-3

1-2

1-2

1-2

4-5

1-2

1-2

3-4

DX4 (3X)

Open

1-2

2-3

2-3

4-5

1-2

3-4

3-4

DX4 (2.5X)

Open

1-2

2-3

2-3

4-5

1-2

3-4

3-4

DX4 (2X)

Open

1-2

2-3

2-3

4-5

1-2

3-4

3-4

486 DX2-SL

1-2

1-2

2-3

2-3

4-5

1-2

3-4

3-4

486 DX-SL

1-2

1-2

2-3

2-3

4-5

1-2

3-4

3-4

486 SX-SL

1-2

1-2

2-3

2-3

4-5

1-2

3-4

3-4

486 DX/DX2

Open

1-2

2-3

2-3

4-5

1-2

3-4

3-4

AM486 DXL

Open

2-3

1-2

2-3

4-5

1-2

3-4

3-4

486 SX

Open

1-2

2-3

2-3

4-5

1-2

3-4

3-4

487 SX

Open

1-2

2-3

2-3

4-5

1-2

3-4

3-4

M7 (5V)

Open

2-3

1-2

2-3

2-3

2-3

2-3

M7 (3.3V)

Open

2-3

1-2

2-3

2-3

2-3

4-5

2-3

Jumper Settings (Cont’d)

Table 2-10 lists jumper W22 through W28 settings for the
type of 486 CPU used on the system board.

Table 2-10. CPU Type Selection (Jumpers W22-W28)

CPU W22 W23 W24 W25 W26 W27 W28

Micronics Computers, Inc. 2-9

Setting Up the JX30WB JX30WB System Board

Jumper

Setting

Reserved

2-3

W29

Reserved

Open

Jumper Settings (Cont’d)

Table 2-11 lists reserved jumpers with factory determined
settings. Do not reconfigure these jumpers.

Table 2-11. Reserved Jumpers

Function

W16

2-10 Micronics Computers, Inc.

JX30WB System Board Setting Up the JX30WB

Jumper

Setting

J1 & J2

Power Supply Connector

J3

Keyboard Connector

J4

External Keyboard

J9

External Battery Connector

J10

Serial Port A

Can be Disabled at the CMOS

configuration screen.

J11

Serial Port B

Can be Disabled at the CMOS

configuration screen.

J12

Parallel Port Connector (LPT)

J13

VESA IDE Connector

Primary

J14

ISA IDE Connector

Secondary

J15

Floppy Disk Connector

J16

HD LED

J17

Speaker Connector

1-Speaker; 2-N/C

3-Ground; 4-5V DC

J18

Turbo Switch

J19

Turbo LED

J20

Power LED/Keylock

1-Power; 2-N/C; 3-Ground;

4-Keybd Lock; & 5-Ground

J21

Reset

Jumper Settings (Cont'd.)

Table 2-12 lists jumper settings for peripherals and case
connections.

Table 2-12. Peripheral and Case Connections

Function

Micronics Computers, Inc. 2-11

Setting Up the JX30WB ................................................................ 2 -1

Precautions ................................................................ ................ 2-1

Static Electricity................................ ......................................... 2 -1

Office Environment ................................ ................................... 2-1

JX30WB Components ................................ ............................... 2-2

Jumper Settings ................................ ......................................... 2-3

Figure 2-1. JX30WB Rev. 1B System Board ................................ 2 -2

Table 2-1. BIOS Operation Selection ............................................ 2 -3

Table 2-2. Video Monitor Display Selection ................................ . 2-3

Table 2-3. Printer Port Configuration Selection ............................ 2-4

Table 2-4. CMOS Reset Selection ................................ ................. 2-4

Table 2-5.SMI Configuration Selection ......................................... 2-5

Table 2-6. Local Bus IDE Selection .............................................. 2-5

Table 2-7. CPU Clock Selection .................................................... 2-5

Table 2-8. Cache Size Selection ................................ .................... 2-6

Table 2-9. CPU Type Selection (Jumpers W11-W21) ................... 2-7

Table 2-10. CPU Type Selection (Jumpers W22-W28) ................. 2-8

Table 2-11. Reserved Jumpers ................................ ....................... 2-9

Table 2-12. Peripheral and Case Connections ............................. 2-10

Micronics Computers, Inc. 2-12

Installing Add-On

3

Peripherals and System
Memory

Options are available to improve performance on the
JX30WB. These options are Local Bus peripherals,
SIMMs, an enhanced processor chip, and level 2 cache
memory.

Before adding or removing any peripherals, make sure you
have a clear work space and that you adhere to all anti-static
precautions. Micronics recommends only trained
technicians operate on the system board. Damage that
occurs to the board while adding or removing peripherals
may void the warranty.

If problems arise when installing peripherals, contact the
computer outlet where you purchased the peripherals or
Micronics’ Technical Support.

Installing a VL-Bus Card

The VL-Bus slots accommodate all VESA local bus
compatible cards. Complete the following steps to install a
VL-Bus card:

1. Power off the computer system and remove the
computer cover.

2. Choose an unused VL-Bus slot.

3. Insert the card with the bottom edge level. Never

insert the card at an angle.

Micronics Computers, Inc. 3-1

Installing Add-On Peripherals JX30WB System Board
and System Memory

Installing a VL-Bus Card (Cont’d)

4. Carefully push the card straight down, making sure the
card is fully inserted.

5. Replace the screw that holds the card into place.

6. Replace the computer cover.

Figure 3-1. Inserting a VESA Local Bus Card

NOTE: Always refer to the computer user guide for

additional instructions concerning installation.
Make sure the VESA Local Bus card is configured
to accommodate the computer.

Cache Memory

The JX30WB supports 8K or 16K of level 1 write­through/write-back cache depending on the specific 486
processor installed. Options are available to support 128K,
256K, 512K, or 1MB of level 2 write-through/write-back
cache.

3-2 Micronics Computers, Inc.

JX30WB System Board Installing Add-On Peripherals

and System Memory

System Memory

The JX30WB has four banks of DRAM, which provide a
maximum of 128MB using 1Mx36, 2Mx36, 4Mx36, or
8Mx36 SIMMs. The system board also supports x32-bit
non-parity SIMMs without need for additional jumper or
BIOS change.

Installing the SIMMs

To install the SIMMs, first locate the four memory banks on
the system board. Start with the bank marked “0”, then
work your way up (0, 1, 2, 3).

Perform the following steps to install the SIMMs:

1. Hold the SIMM so that the NOTCHED edge is pointing
toward the ISA slots (refer to Figure 2-1).

2. Insert the SIMM at a 45 degree angle.

3. Gently push the SIMM to an upright position until it
"snaps" into place (past the release tabs).

The SIMM is ready to operate when it is firmly seated in
the socket.

Figure 3-2. Installing the SIMM

Micronics Computers, Inc. 3-3

Installing Add-On Peripherals JX30WB System Board

Bank 0

Bank 1

Bank 2

Bank 3

Total

4MB

4MB

4MB

4MB

8MB

4MB

4MB

4MB

4MB

16MB

8MB

8MB

16MB

8MB

8MB

4MB

4MB

24MB

8MB

8MB

8MB

8MB

32MB

16MB

16MB

32MB

16MB

16MB

4MB

4MB

40MB

16MB

16MB

8MB

8MB

48MB

16MB

16MB

16MB

16MB

64MB

32MB

32MB

64MB

32MB

32MB

4MB

4MB

72MB

32MB

32MB

8MB

8MB

80MB

32MB

32MB

16MB

16MB

96MB

32MB

32MB

32MB

32MB

128MB

and System Memory

Removing the SIMMs

Perform the following steps to remove the SIMMs:

1. With both thumbs (or fingers), press the release tabs
away from the socket. The SIMM should now be free
from the release tabs.

2. Lift the module straight up.

Memory Configuration

Table 3-1 lists the possible memory size configurations.
The BIOS automatically detects the amount of memory
installed.

Table 3-1. DRAM Memory Configuration

3-4 Micronics Computers, Inc.

JX30WB System Board Installing Add-On Peripherals

and System Memory

SIMM-Types Supported

The JX30WB supports the following SIMMs:

• 1x36 (4MB) with memory parity bit

• 1x32 (4MB) without memory parity bit

• 2x36 (8MB) with memory parity bit

• 2x32 (8MB) without memory parity bit

• 4x36 (16MB) with memory parity bit

• 4x32 (16MB) without memory parity bit

• 8x36 (32MB) with memory parity bit

• 8x32 (32MB) without memory parity bit

NOTE: For long term reliability, Micronics recommends

using SIMMs with tin-plated connectors. Using
gold-plated connectors may conflict with the tin
alloy of the SIMM socket.

Installing an Enhanced CPU

The JX30WB is designed to support Intel OverDrive
processors, including 486 DX2, DX4, and Pentium
OverDrive versions. A processor upgrade can significantly
improve system performance.

Micronics Computers, Inc. 3-5

Installing Add-On Peripherals JX30WB System Board
and System Memory

Installing an Enhanced CPU (Cont’d)

Complete the following steps to install an upgrade
processor:

1. Locate the ZIF socket on the system board (refer to
Figure 2-1).

2. Lift the lever of the socket.

3. Insert the new processor into the socket. Make sure pin
1 on the CPU lines up with pin 1 on the socket. Refer
to Figure 2-1 for pin 1 location.

4. Push the lever down to its original position.

5. Configure the board using the tables in Chapter 2.

The new CPU is now ready to operate. The system board
detects the installed CPU after it is inserted and configured.

WARNING:If the new processor includes a heat sink or

cooling fan, be certain to install the device
according to the manufacturer’s instructions.
Failure to provide adequate cooling of the
processor may seriously affect system
performance or cause permanent damage.

Installing Cache Memory

The JX30WB supports 8K or 16K bytes of level 1 write­through/write-back cache depending on the 486 processor
installed. Level 2 write-through/write-back cache is also
available to provide 128K, 256K, 512K, or 1MB options.

3-6 Micronics Computers, Inc.

JX30WB System Board Installing Add-On Peripherals

and System Memory

Installing Cache Memory (cont’d)

128K of Level 2 Cache

Write-Through

For 128K bytes of level 2 cache, install four 32Kx8-20ns
SRAMs into sockets U57 through U60. The sockets have
four additional pins, or an additional row of pins, to support
128Kx8 SRAMs for 512K and 1MB configurations. After
installing the cache, refer to table 2-8 for the correct jumper
settings.

Write-Back

For enhanced level 2 performance, add an additional
32Kx8-20ns “dirty bit” SRAM in the U51 socket.

Micronics Computers, Inc. 3-7

Installing Add-On Peripherals JX30WB System Board
and System Memory

Figure 3-3. Installing 128K of Level 2 Cache

NOTE: Make sure the notches on SRAMs match the

notches on the sockets.

Installing Cache Memory (Cont’d)

256K of Level 2 Cache

Write-Through

For 256K bytes of level 2 cache, install eight 32Kx8-20ns
SRAMs into sockets U47 through U50 and U57 through
U60. The sockets have four additional pins, or an
additional row of pins, to support 128Kx8 SRAMs for
512K and 1MB configurations. After installing the cache,
refer to table 2-8 for the correct jumper settings.

Write-Back

For enhanced level 2 performance, add an additional
32Kx8-20ns “dirty bit” SRAM in the U51 socket.

3-8 Micronics Computers, Inc.

JX30WB System Board Installing Add-On Peripherals

and System Memory

Figure 3-4. Installing 256K of Level 2 Cache

NOTE: Make sure the notches on SRAMs match the

notches on the sockets.

Installing Cache Memory (Cont’d)

512K of Level 2 Cache

Write-Through

For 512K bytes of level 2 cache, install four 128Kx8-20ns
SRAMs into sockets U53 through U56. After installing the
level 2 cache, refer to table 2-8 for the correct jumper
settings.

Write-Back

For enhanced level 2 performance, add an additional
128Kx8-20ns “dirty bit” SRAM in the U46 socket.

Micronics Computers, Inc. 3-9

Installing Add-On Peripherals JX30WB System Board
and System Memory

Figure 3-5. Installing 512K of Level 2 Cache

NOTE: Make sure the notches on SRAMs match the

notches on the sockets.

Installing Cache Memory (Cont’d)

1MB of Level 2 Cache

Write-Through

For 1MB of level 2 cache install eight 128Kx8-20ns
SRAMs into sockets U42 through U45 and U53 through
U56. After installing the level 2 cache, refer to table 2-8 for
the correct jumper settings.

Write-Back

For enhanced level 2 performance, add an additional
128Kx8-20ns “dirty bit” SRAM in the U46 socket.

3-10 Micronics Computers, Inc.

JX30WB System Board Installing Add-On Peripherals

and System Memory

Figure 3-6. Installing 1MB of Level 2 Cache

NOTE: Make sure the notches on SRAMs match the

notches on the sockets.

Micronics Computers, Inc. 3-11

Installing Add-On Peripherals and System Memory ..................... 3-1

Installing a VL-Bus Card ................................ ........................... 3-1

Cache Memory ................................................................ .......... 3-2

System Memory ................................ ........................................ 3-3

Installing the SIMMs ................................ ................................. 3-3

Removing the SIMMs ................................ ............................... 3-4

Memory Configuration ................................ .............................. 3-4

SIMM-Types Supported ............................................................ 3-5

Installing an Enhanced CPU ................................ ...................... 3-5

Installing Cache Memory ................................ .......................... 3-6

128K of Level 2 Cache ................................ .......................... 3-7

Write-Through ................................ ................................... 3-7

Write-Back ................................................................ ......... 3-7

256K of Level 2 Cache ................................ .......................... 3-8

Write-Through ................................ ................................... 3-8

Write-Back ................................................................ ......... 3-8

512K of Level 2 Cache ................................ .......................... 3-9

Write-Through ................................ ................................... 3-9

Write-Back ................................................................ ......... 3-9

1MB of Level 2 Cache ................................ ......................... 3-10

Write-Through ................................ ................................. 3-10

Write-Back ................................................................ ....... 3-10

Figure 3-1. Inserting a VESA Local Bus Card .............................. 3-2

Figure 3-2. Installing the SIMM .................................................... 3 -3

Figure 3-3. Installing 128K of Level 2 Cache ............................... 3-7

Figure 3-4. Installing 256K of Level 2 Cache ............................... 3-8

Figure 3-5. Installing 512K of Level 2 Cache ............................... 3-9

Figure 3-6. Installing 1MB of Level 2 Cache .............................. 3-10

Table 3-1. DRAM Memory Configuration .................................... 3-4

Micronics Computers, Inc. 3-12

Installing and Configuring

4

the JX30WB

Installation

Installation of the JX30WB system board depends on the
type of case you have. Consult the computer user manual
when installing the JX30WB, or contact your dealer’s
Technical Support department. Before installing the
JX30WB, make sure you have a clear work space available
and adhere to all anti-static precautions.

Tools Required

Micronics recommends using the following tools to install
the JX30WB:

• Small Philips screwdriver

• Tweezers or a pair of needle-nose pliers

• Tray to hold loose screws

Micronics Computers, Inc. 4-1

Installing and Configuring the JX30WB JX30WB System Board

Equipment Required

Micronics recommends using the following equipment with
the JX30WB:

• Chassis with standard hardware

• Standard power supply capable of providing continuous

power within a 5 volt range, plus or minus 5% (e.g.,

4.75 to 5.25). A power filter may be added for areas
with noisy transmission.

• Hard disk and floppy disk drives (360K, 720K, 1.2M,

1.44M, or 2.88M)

• Eight ohm speaker

• Video card (monochrome, EGA, or VGA)

• Standard video monitor

• AT-compatible keyboard (84 or 101 keyboard)

• Flat ribbon cables between the hard/floppy drive

controller

• Heat-sink for the CPU (if needed)

Configuration

After all components have been installed and extras added,
your system is ready to be configured. Before power-up,
make sure all cables are correctly connected. You may
want to keep the system open, so if you encounter any
problems, you can easily address them.

4-2 Micronics Computers, Inc.

JX30WB System Board Installing and Configuring the JX30WB

256 Cache Installed

Initial Boot Up

Boot-up the JX30WB. If after power-up the system doesn’t
properly boot, check all connections and peripherals. You
may also get beep codes or other messages. If this occurs,
consult Appendices A and/or B for a guide to possible
problems.

After the system properly boots, it is ready to be configured.
The following pages discuss the proper procedures for
BIOS configuration.

Setup

The Setup procedure is already built into the system. Setup
begins after the completed system is powered up. Once the
system is powered up and goes through a memory test, the
following screen appears on your monitor:

Phoenix 80486 ROM BIOS Plus, Version 0.10 JX30WB-XX
Copyright (c) 1985-1990 Phoenix Technologies Ltd.
All Rights Reserved

640K Base, xxxK Extended
Internal Cache Enabled
External Cache Enabled

Figure 4 -1. Power-Up Screen

If the systems detects a configuration error, it displays an
error message. After the error message, another message
displays indicating the choice to press < F1> to continue
(boot up), or <F2> to run the Setup procedure. Normally,
you will press <F2> to begin the Setup procedure.

Micronics Computers, Inc. 4-3

Installing and Configuring the JX30WB JX30WB System Board

Menu Help Sys Info Field Value PgDn

Running The Setup Procedure

Upon pressing <F2>, the CMOS Main Screen (Figure 4-2)
should appear and the prompt should be on the time line. If
the Power-Up Screen does not appear but a DOS prompt
does (i.e., A:\ or C:\), press the <CTRL>, <ALT>, and
<ESC> keys simultaneously to begin the Setup procedure.

The JX30WB system board has two CMOS configuration
screens: the Main Screen (Figure 4-2) and the Extended
Screen (Figure 4-3). To toggle between the screens, press
the PgUp/PgDn keys.

(c) Phoenix Technologies Ltd. 1985, 1993 All Rights Reserved

Phoenix SETUP Utility (Version 1.00)

System Time: 22:06:45 System Date: Jan 06, 1990

Diskette Drive A: 3.5”, 1.44 MB
Diskette Drive B: Not Installed Cyl Hd Pre LZ Sec Size
Hard-Disk Drive 1: Auto Config 978 14 0 0 35 233
Hard-Disk Drive 2: Not Installed
Hard-Disk Drive 3: Not Installed
Hard-Disk Drive 4: Not Installed

Board Memory: 640 KB
Extended Memory: 15360 KB
Video Card: VGA/EGA
System Speed: Normal
Cache: Both
Ext. Cache Mode: Write-Back
CPU Type: DX-33 / DX2-66

ESC F1 F2

↓↑ +/- PgUp/

Page 1 of 2

Figure 4 -2. CMOS Main Screen

4-4 Micronics Computers, Inc.

JX30WB System Board Installing and Configuring the JX30WB

Menu Help Sys Info Field Value PgDn

Running the Setup Procedure
(Cont'd.)

(c) Phoenix Technologies Ltd. 1985, 1993 All Rights Reserved

System BIOS: Shadowed & Cached
Video BIOS: Shadowed & Cached

On Board Floppy: Enabled Keyboard: Installed
Primary IDE: Enabled System Password: Disabled
Master Speed: Normal Setup Password: Disabled
Slave Speed: Normal
Secondary IDE: Enabled

Serial Port 1: COM1 / IRQ4 (3F8h)
Serial Port 2: COM2 / IRQ3 (2F8h)
Parallel Port: LPT1 (378h)
Parallel Port Mode: AT
Standby Break Event IRQ: Disabled
Energy Saving Timer: Disabled
Non-Cacheable Area: Undefined 0000000h

ESC F1 F2

Phoenix SETUP Utility (Version 1.00)

Page 2 of 2

↓↑ +/- PgUp/

Figure 4 -3. CMOS Extended Screen

Now, configure the parameters to match your specific
requirements. See the following pages for procedures on
how to set the computer’s parameters.

To return to the CMOS configuration screens at any time to
change or view any of these parameters, press <CTRL>,
<ALT>, and <ESC> simultaneously.

Micronics Computers, Inc. 4-5

Installing and Configuring the JX30WB JX30WB System Board

Setting the CMOS Main Screen

System Time and Date

To set the time, use the minus < -> key to decrease the
number and the plus < +> key to increase the number. To
move the prompt forward, use the right arrow < > key; to
move the prompt backward, use the left arrow < > key.
Follow the same procedure for the date.

Diskette A or B

This allows you to configure a diskette drive added or
removed from your computer.

Hard Disk 1, 2, 3, or 4

This selection allows you to configure a hard disk installed
in your system. Use the < +/-> keys to toggle between the
options. See Appendix C for a complete listing of all
possible hard drive types.

To install most SCSI hard drives, select NOT INSTALLED.
To manually configure the hard drive, select USER
CONFIG. Press the right arrow < > key and type in the
appropriate parameters. To automatically configure an IDE
hard drive, select AUTO CONFIG. Drives that can be
Auto-Configured report parameters to the BIOS.

Base Memory and Extended Memory

Both of these memory settings are automatically
configured.

4-6 Micronics Computers, Inc.

JX30WB System Board Installing and Configuring the JX30WB

Setting the CMOS Main Screen
(Cont'd.)

Video Card

This sets the type of monitor required for your computer.
The display peripheral supports VGA/EGA, Monochrome
(MONO), or no monitor at all.

System Speed

The CPU speed determines whether the turbo switch on the
front of the computer is enabled or disabled. The selections
for the system speed are NORMAL and SLOW. When set
to SLOW, the system runs at “cache off” speed.

CPU Type

This option selects the CPU installed and has auto detection
with corresponding jumper settings on board. You must
choose the correct CPU selection with the corresponding
CPU. This selection is for user-upgradeable CPUs.

Cache State

The JX30WB has the option of activating or deactivating
the internal 8K- or 16K-byte cache of the 486
microprocessor, and the external cache on the system board.
Choose INTERNAL to activate or DISABLED to deactivate
the internal cache, if no external cache is present. If
external cache is present, choose BOTH to activate and
DISABLED to deactivate.

Micronics Computers, Inc. 4-7

Installing and Configuring the JX30WB JX30WB System Board

Setting the CMOS Main Screen
(Cont'd.)

External Cache Mode

This option selects the type of level 2 cache installed in the
system. The choices are WRITE-BACK or WRITE­THROUGH.

Setting the CMOS Extended Screen

System BIOS

The system BIOS allows you to “shadow” the BIOS on the
system board. Choosing SHADOWED & CACHED copies
the system BIOS into RAM for faster execution and makes
the memory region cacheable. This allows you to take
advantage of the high-speed 32-bit bus and the 70
nanosecond RAM. Choosing SHADOWED copies the
system BIOS into RAM, but does not cache any memory
region. You can also select DISABLED.

Video BIOS

The video BIOS allows you to “Shadow” the BIOS on the
video card. Choosing SHADOWED & CACHED copies
the video BIOS into RAM for faster execution and makes
the memory region cacheable. Choosing SHADOWED
copies the video into RAM, but does not cache any memory
region. You can also select DISABLED. Some video cards
cannot be shadowed, so this selection must be set to
DISABLED.

4-8 Micronics Computers, Inc.

JX30WB System Board Installing and Configuring the JX30WB

Setting the CMOS Extended Screen
(Cont'd.)

On-Board Floppy

This selection allows you to disable or enable the on-board
floppy. Use the <+/-> keys to toggle between the options.

Primary IDE

This selection allows you to disable or enable the on-board
primary IDE controller. VESA local bus IDE provides
faster performance. The selections are ENABLED and
DISABLED.

Master Speed

This selection is for the master (first) drive connected to the
on-board primary IDE controller, and customizes the speed
of the drive. The selections are NORMAL, MEDIUM, and
FAST. Select MEDIUM for Mode 2 and FAST for Mode 3.
This is for higher performance drives that support Mode 3
(180ns cycle time). Select NORMAL for drives that do not
support Mode 3.

Slave Speed

This selection is for the slave (second) drive connected to
the on-board primary IDE controller and customizes the
speed of the drive. The selections are NORMAL,
MEDIUM, and FAST. Select MEDIUM for Mode 2 and
FAST for Mode 3. This is for higher performance drives
that support Mode 3 (180ns cycle time). Select NORMAL
for drives that do not support Mode 3.

Micronics Computers, Inc. 4-9

Installing and Configuring the JX30WB JX30WB System Board

Setting the CMOS Extended Screen
(Cont'd.)

Secondary IDE

This selection allows you to enable or disable the on-board
secondary IDE controller. The secondary IDE is a standard
ISA connector suitable for slower IDE devices, such as tape
backups and CD ROM drives. No BIOS options exist for
drive speed because both master and slave drives connected
to the secondary ISA IDE controller have only one speed.

Serial Port 1 (Com 1)

The serial port 1 can be selected as COM1/IRQ4,
COM3/IRQ4, or DISABLED. Be sure this setting does not
conflict with any add-on peripherals. This port can also be
set to DISABLED if the on-board port is not used.

Serial Port 2 (Com 2)

The serial port 2 can be selected as COM2/IRQ3,
COM4/IRQ3, or DISABLED. Be sure this setting does not
conflict with any add-on peripherals. This port can also be
set to DISABLED if the on-board port is not used.

Parallel Port (LPT)

The parallel port selection can be selected as LPT1 or LPT2.
Be sure this setting does not conflict with any add-on
peripherals. The parallel port can also be set to DISABLED
if the on-board port is not used.

4-10 Micronics Computers, Inc.

JX30WB System Board Installing and Configuring the JX30WB

Setting the CMOS Extended Screen
(Cont'd.)

Parallel Port Mode

The parallel port mode selects either bi-directional mode or
output mode for the parallel port. Output mode is selected
when this is set to AT. Bi-directional mode is selected
when this is set to PS/2.

Standby Break Event IRQ

Disable this option if no network is present. If a network
card is present, set it to the IRQ setting of the network card
(e.g., IRQs 2, 3, 4, 5, 9, 10, 11, or 12). Novell netware
sends dummy IRQs to all machines on the network at
intervals of five seconds. These dummy IRQs cause the
system to be active at all times, and does not allow it to go
into the sleep mode. Setting the IRQ to match the network
card eliminates this problem.

Energy Saving Timer

This section allows you to conserve energy while
maintaining optimum performance. If no key strokes are
performed on the keyboard, the following occurs:

• CPU reduces its speed to 8MHz

• IDE drive spins down

• DPMS graphics are disabled

Micronics Computers, Inc. 4-11

Installing and Configuring the JX30WB JX30WB System Board

These selections will not recognize any mouse movement,
only activity involving the keyboard.

Setting the CMOS Extended Screen
(Cont'd.)

Energy Saving Timer (Cont’d)

This selection can be set to one minute or in increments of
fifteen minutes (up to 120 minutes). After the allotted time,
the above functions time out. To return the functions to full
speed, press any key. The Scroll Lock light flashes to
indicate reduced speed.

Non-Cacheable Area

This selection allows a block of 32-bit memory to be set as
NON-CACHEABLE. The size and address can be selected.
To set the memory as non-cacheable, use the < +/-> keys to
change the first three zeroes to the appropriate address (only
these zeroes can be changed). The selections include a
range from 0000000h to 3FF0000h (64MB). The default
settings for both selections are UNDEFINED.

Keyboard

The keyboard function is set to INSTALLED for keyboard
error reporting. To turn off keyboard error reporting, use
the left/right arrow keys to toggle the keyboard NOT
INSTALLED.

4-12 Micronics Computers, Inc.

JX30WB System Board Installing and Configuring the JX30WB

Setting the CMOS Extended Screen
(Cont'd.)

System Password

The password you select must be typed at boot up when this
selection is ENABLED. The system will not boot up
without the correct password. After entering the correct
password, the system asks: “Do you want to change your
password (Y/N)?” Press < Y> to change the password and
<N> to keep it.

If no password has been entered or the CMOS memory has
been cleared, the following message appears at boot up:
“Password values are invalid. Do you want a password
(Y/N)?”

Setup Password

If ENABLED, a password is required to enter Setup. If the
password is lost or forgotten, the CMOS must be cleared.

Micronics Computers, Inc. 4-13

Installing and Configuring the JX30WB JX30WB System Board

Menu Help Sys Info Field Value PgDn

Saving Values

F4

ESCF5F6

Re-Configuring Your Computer

Press the <ESC> key to reach the Exit Pop-Up Screen.
Now select <F4> to save and initialize the new Setup.

(c) Phoenix Technologies Ltd. 1985, 1993 All Rights Reserved

System Time: 22:06:45 System Date: Jan 06, 1990

Diskette Drive A: 3.5”, 1.44 MB
Diskette Drive B: Not Installed Cyl Hd Pre LZ Sec Size
Hard-Disk Drive 1: Auto Config 978 14 0 0 35 233
Hard-Disk Drive 2: Not Installed
Hard-Disk Drive 3: Not Installed
Hard-Disk Drive 4: Not Installed

Board Memory: 640 KB
Extended Memory: 15360 KB
Video Card: VGA/EGA
System Speed: Normal
Cache: Both
Ext. Cache Mode: Write-Back
CPU Type: DX-33 / DX2-66

ESC F1 F2

Phoenix SETUP Utility (Version 1.00)

Page 1 of 2

Continue With Setup

Save Values, Exit
SETUP and Reboot

Load Default Values
For All Pages

Abort SETUP Without

↓↑ +/- PgUp/

Figure 4 -4. Exit Pop-up Screen

4-14 Micronics Computers, Inc.

Installing and Configuring the JX30WB ................................ .......4-1

Installation ................................................................ ................. 4-1

Tools Required................................ ........................................... 4-1

Equipment Required ................................ ..................................4 -2

Configuration ................................................................ .............4 -2

Initial Boot Up ................................................................ ...........4-3

Setup ................................................................ .......................... 4-3

Running The Setup Procedure ................................................... 4-4

Setting the CMOS Main Screen ................................ ................. 4-6

System Time and Date ................................ ........................... 4-6

Diskette A or B................................................................ .......4-6

Hard Disk 1, 2, 3, or 4 ................................ ............................ 4-6

Base Memory and Extended Memory .................................... 4-6

Video Card ................................ ............................................. 4-7

System Speed ................................ ......................................... 4-7

CPU Type................................................................ ............... 4-7

Cache State................................ ............................................. 4-7

External Cache Mode ............................................................. 4-8

Setting the CMOS Extended Screen ................................ ..........4-8

System BIOS................................ .......................................... 4-8

Video BIOS................................ ............................................ 4-8

On-Board Floppy ................................ ...................................4 -9

Primary IDE ................................................................ ...........4-9

Master Speed ................................................................ ......4-9

Slave Speed ................................ ........................................ 4-9

Secondary IDE ................................................................ .....4-10

Serial Port 1 (Com 1) ................................ ........................... 4-10

Serial Port 2 (Com 2) ................................ ........................... 4-10

Parallel Port (LPT) ................................ ............................... 4-10

Parallel Port Mode................................ ................................ 4-11

Standby Break Event IRQ ................................ .................... 4-11

Energy Saving Timer ................................ ........................... 4-11

Non-Cacheable Area ............................................................ 4-12

Keyboard................................ .............................................. 4-12

System Password................................ ..................................4 -13

Setup Password ................................................................ ....4-13

Re-Configuring Your Computer ................................ .............. 4-14

Figure 4-1. Power-Up Screen ................................ ......................... 4-3

Micronics Computers, Inc. 4-1

Installing and Configuring the JX30WB JX30WB System Board

Figure 4-2. CMOS Main Screen ................................ .................... 4-4

Figure 4-3. CMOS Extended Screen ............................................. 4-5

Figure 4-4. Exit Pop-up Screen ................................................... 4-14

4-2 Micronics Computers, Inc.

POST and Boot Error

Number/Message

Possible Cause

NO DISKETTE

If Floppy controller is

not found.

Change the

configuration

DISKETTE DRIVE

RESET FAILED

The diskette adapter

has failed.

Check the diskette

adapter.

DISKETTE DRIVE B

The B drive failed or is

missing.

Check the B drive.

DISKETTE DRIVE A

The A drive failed or is

missing.

Check the A drive.

DISKETTE READ

FAILURE; STRIKE F1

TO RETRY BOOT

The diskette is not

formatted or is

defective.

Replace the diskette

with a formatted

diskette and retry.

DISPLAY ADAPTER

FAILED USING

The color/monochrome

switch is not set

correctly, or the primary

video adapter failed.

Change the switch to

the correct setting, or

check the primary video

adapter.

ERRORS FOUND;

DISK X FAILED

The POST reports hard

disk configuration

information is incorrect.

Rerun SETUP and

enter the correct hard

disk information.

A

Messages

Table A-1 lists Power On Self Test (POST) messages,
possible causes, and solutions.

Table A-1. POST Messages

Solution

CONTROLLER

FAILURE

FAILURE

ALTERNATE

INITIALIZATION

.

Micronics Computers, Inc. A-1

Appendix A POST and Boot Error Messages JX30WB System Board

Number/Message

Possible Cause

ERRORS FOUND;

INCORRECT

CONFIGURATION

INFORMATION;

MEMORY SIZE

The POST reports the

size of base, or the

expansion memory,

does not agree with

configuration

information.

Enter correct memory

size and rerun SETUP

procedure.

FIXED DISK

CONFIGURATION

The specified

configuration is not

supported.

Correct the hard disk

configuration.

FIXED DISK

CONTROLLER

The controller card has

failed.

Replace controller card.

FIXED DISK X

FAILURE (where X =0

or 1)

The hard disk crashed.

Press F1 to reboot or

rerun Setup. If this does

not work, replace hard

disk.

HARD READ

FAILURE- STRIKE F1

TO RETRY BOOT

The hard disk failed.

Press F1 to reboot or

rerun Setup. If this does

not work, replace hard

disk.

FDD CONTROLLER

Diskette controller

failed.

Replace controller card.

FDD A IS NOT

Cannot find diskette

controller for drive A.

Install or replace

controller card.

FDD B IS NOT

Cannot find diskette

controller for drive B.

Install or replace

controller card.

Table A-1. POST Messages (Cont’d)

Solution

MISCOMPARE

FAILURE

FAILURE

FAILURE

INSTALLED

INSTALLED

A-2 Micronics Computers, Inc.

JX30WB System Board Appendix A POST and Boot Error Messages

Number/Message

Possible Cause

KEYBOARD CLOCK

LINE FAILURE or

KEYBOARD DATA

LINE FAILURE

The Keyboard logic

failed.

Make sure the kybrd

cable is connected

correctly.

KEYBOARD STUCK

KEY FAILURE

The Key(s) is jammed.

Make sure the keyboard

is not dirty.

REAL TIME CLOCK

The Real-time clock

logic failed.

Check battery or field

service is required.

TIME-OF-DAY NOT

SET- RUN SETUP

The Real-time clock

time-of-day is not

running.

Run SETUP utility.

BIOS XXXX ROM BAD

CHECKSUM (where

XXXX=C8000 to

E0000)

The optional ROM

checksum is bad.

Replace Add-on card.

DISKETTE READ

FAILURE, or NOT A

BOOT DISKETTE, or

NO BOOT DEVICE

If Boot from floppy

diskette failed.

Replace the diskette

with a bootable diskette

and retry.

DECREASING

AVAILABLE MEMORY,

or MEMORY FAILURE

AT AAAAAAAA READ

XXXX EXPECTING

YYYY (where

AAAAAAAA = failing

address, XXXX=data

read, and YYYY=data

written)

The memory data

integrity failed.

Check contact points

between memory

modules and system

board. Replace

memory modules if

necessary.

Table A-1. POST Messages (Cont’d)

Solution

FAILURE

PROGRAM

AVAILABLE

Micronics Computers, Inc. A-3

Appendix A POST and Boot Error Messages JX30WB System Board

A-4 Micronics Computers, Inc.

Beep Codes

B

Beep codes are a series of beeps sent through the speaker
that indicate a problem during POST. If text appears on the
video screen, the JX30WB has completed POST; any other
tone from the speaker indicates something other than a
POST error. These tones are not described in Table B-1.

The beep error codes are a series of three sets of beeps. The
duration of the beep tones are constant, but the length of the
pauses between the beeps varies. For example, a 1-3-3 beep
code will sound like one beep, a pause, three beeps
consecutively, another pause, and then three more beeps.

One beep code is often misunderstood. With no video card
installed, or if the video card is failing, the system board
will generate a long-short-long-short beep code. This is
often interpreted as a 1-2-1 beep code. But POST errors
always vary in the length of the pause, and not the duration
of the beep tone.

Another way of identifying a POST error is to use a device
called a POST-card. This peripheral card is inserted into
one of the ISA slots and has an LED (or LCD) read out
showing the contents of port 80h.

Table B-1 lists all beep codes and probable causes.

Micronics Computers, Inc. B-1

Appendix B Beep Codes JX30WB System Board

Beep Code

Contents

Port 80h

Description

None

CPU register test in progress.

1-1-3

CMOS read/write failure.

1-1-4

ROM BIOS check failure.

1-2-1

Programmable interval timer failure.

1-2-2

DMA initialization failure.

1-2-3

DMA page register write/read

failure.

1-3-1

RAM refresh verification failure.

None

First 64K RAM test in progress.

1-3-3

First 64K RAM chip or data line

failure (multi-bit).

1-3-4

First 64K RAM odd/even logic

failure.

1-4-1

Address line failure first 64K RAM.

1-4-2

Parity failure first 64K RAM.

2-1-1

Bit 0 first 64K RAM failure.

2-1-2

Bit 1 first 64K RAM failure.

2-1-3

Bit 2 first 64K RAM failure.

2-1-4

Bit 3 first 64K RAM failure.

2-2-1

Bit 4 first 64K RAM failure.

2-2-2

Bit 5 first 64K RAM failure.

2-2-3

Bit 6 first 64K RAM failure.

Table B-1. Beep Codes

01h
02h
03h
04h
05h
06h

08h
09h

0Ah

B-2 Micronics Computers, Inc.

0Bh

0Ch
0Dh

10h
11h
12h
13h
14h
15h
16h

JX30WB System Board Appendix B Beep Codes

Beep Code

Contents

Port 80h

Description

2-2-4

Bit 7 first 64K RAM failure.

2-3-1

Bit 8 first 64K RAM failure.

2-3-2

Bit 9 first 64K RAM failure.

2-3-3

Bit 10 first 64K RAM failure.

2-2-4

Bit 11 first 64K RAM failure.

2-3-1

Bit 12 first 64K RAM failure.

2-4-2

Bit 13 first 64K RAM failure.

2-4-3

Bit 14 first 64K RAM failure.

2-4-4

Bit 15 first 64K RAM failure.

3-1-1

Slave DMA register failure.

3-1-2

Master DMA register failure.

3-1-3

Master interrupt mask register

failure.

3-1-4

Slave interrupt mask register failure.

None

Interrupt vector loading in progress.

3-2-4

Keyboard controller test failure.

None

CMOS power failure and checks

calculation in progress.

None

CMOS configuration validation in

progress.

3-3-4

Screen initialization failure.

3-4-1

Screen retrace test failure.

Table B-1. Beep Codes (Cont’d)

17h
18h

19h
1Ah
1Bh
1Ch
1Dh
1Eh
1Fh

20h

Micronics Computers, Inc. B-3

21h

22h

23h

25h

27h

28h

29h

2Bh
2Ch

Appendix B Beep Codes JX30WB System Board

Beep Code

Contents

Port 80h

Description

3-4-2

Search for video ROM in progress.

None

Screen running with video ROM.

None

Screen operable.

None

Screen running with video ROM.

None

Monochrome monitor operable.

None

Color monitor (40 column) operable.

None

Color monitor (80 column) operable.

Table B-1. Beep Codes (Cont’d)

2Dh
2Eh

30h
30h
31h
32h
33h

B-4 Micronics Computers, Inc.

Hard Disk Types

Type

Cyl

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

Not Valid (Unusable Parameters)

C

Table C-1 lists the hard disk types compatible with the
JX30WB.

Table C-1. Hard Disk Types

Hd Pre Lz Sec Size

1 306 4 128 305 17 10
2 980 5
3 980 10
4 872 8
5 1010 6
6 987 12
7 989 12
8 1010 9
9 1010 12
10 989 15
11 903 4 0 0 46 81
12 903 8 0 0 46 162
13 659 16 0 0 46 236
14 702 16 0 0 63 345
15
16 987 16 0 0 63 485
17 1023 16 0 0 63 503

17 40
17 81
35 119
55 162
35 202
35 202
55 244
55 325
56 405

18 895 5 0 0 55 120

Micronics Computers, Inc. C-1

Appendix C Hard Disk Types JX30WB System Board

Type

Cyl

-1

-1

-1

Table C-1. Hard Disk Types (Cont’d)

Hd Pre Lz Sec Size

19 904 8 0 0 46 162
20 683 16 0 0 58 309
21 895 10 0 0 55 240
22 904 16 0 0 46 324
23 1023 16 0 0 63 503
24 1024 12 0 0 17 102
25 1001 15 0 0 17 124
26 978 14 0 0 35 233
27 1018 14 0 0 62 431
28 1024 12 0 0 34 204
29 768 14 0 0 62 325
30 1024 16 0 0 63 504
31 1001 15 0 0 34 249
32 936 16 0 0 17 124
33 883 16 0 0 38 262
34 967 16 0 0 63 475
35 790 16 0 0 57 351
36 615 4
37 1024 4
38 1024 5

615 17 20
1023 17 34
1023 17 42

39 989 5 0 989 17 41

C-2 Micronics Computers, Inc.

JX30WB System Board Appendix C Hard Disk Types

Type

Cyl

-1

-1

-1

-1

User Config.

Auto Config.

Table C-1. Hard Disk Types (Cont’d)

Hd Pre Lz Sec Size

40 1024 8 1024 1024 17 68
41 820 6

820 17 40
42 823 10 256 824 17 68
43 615 8 128 664 17 40
44 1023 15
45 1024 8
46 925 9

1023 17 127

1024 17 68

925 17 69
47 699 7 256 700 17 40
48
49

Micronics Computers, Inc. C-3

Specifications

D

Processor Options

Chip Set

CPU Clock Select

Form Factor

Expansion

RAM Capacity

486 SX 25 & 33MHz
486 DX 25 & 33MHz
486 DX2 50 & 66MHz
486 DX4 75 & 100MHz
Pentium OverDrive

Micronics X30WB single chip
Opti 611A Mode 3 VL IDE
controller
SMC 665 Super I/O controller

Frequency synthesizer chip for
easy upgrade CPU clock
selection

Baby AT footprint (8.5" x 13")
4 Layer PCB

Two 32-bit VL-Bus/16-bit ISA
Five 16-bit ISA slots

Four 72-pin (x36 type) SIMM
sockets, which accommodate up
to 128MB of RAM (using
8Mx36 SIMMs)

Micronics Computers, Inc. D-1

Appendix D Specifications JX30WB System Board

Keyboard

BIOS

Cache

Read Policy

Cache Upgrade

I/O Ports

Connectors

Local Bus IDE

Standard AT style DIN
connector

Phoenix BIOS on 1MB Flash
EPROM
Mode 3 IDE driver support
Auto detection of memory size
Auto configuration of IDE hard
disk drive types

8K/16K of on-chip level 1
write-back cache memory

Look aside

Optional 128K, 256K, 512K, or
1MB of secondary cache
memory (write-through or write­back)

Two serial ports
One parallel port

One floppy interface
One keyboard interface

Two resident 40-pin IDE
connectors (primary and
secondary IDE)
Mode 3 support
Auto detection of add-in IDE
cards
Multiple sector transfer support

D-2 Micronics Computers, Inc.

JX30WB System Board Appendix D Specifications

Battery Disposal

CAUTION:Danger of explosion if battery is incorrectly

replaced. Replace only with the same or
equivalent type recommended by the
manufacturer. Discard used batteries
according to the manufacturer’s instructions.

ATTENTION:Il y a danger d’explosion s’il y a

replacement incorrect de la batterie.
Remplacer uniquement avec une batterie du
meme type ou d’un type recommande par le
constructeur. Mettre au rebut les batteries
usagees conforement aux instructions du
fabricant.

Environmental Specifications

The environment in which the JX30WB is located is
critical. Micronics recommends the following
environmental specifications:

Temperature Range

Operating: 50 degrees to 104 degrees Fahrenheit (10
degrees to 50 degrees Celsius).

Non-Operating: 50 degrees to 140 degrees Fahrenheit (10
degrees to 60 degrees Celsius).

Shipping: -22 degrees to 140 degrees Fahrenheit (-30 to 60
degrees Celsius).

Relative Humidity (Non-Condensing)

Operating: 20% to 80%.

Micronics Computers, Inc. D-3

Appendix D Specifications JX30WB System Board

Non-Operating: 5% to 90%

D-4 Micronics Computers, Inc.

lossary

G

BIOS: Basic Input Output System. Maintains and

controls the entire functions of the computer.

Cache: Fast memory used to enhance the efficiency

and speed of the computer.

CPU: Central Processing Unit. Essentially, the

“brains” of the computer.

Disk Drive: Either a hard disk or a floppy diskette.

DRAM: Dynamic Random Access Memory.

EISA: Extended Industry Standard Architecture.

ISA: Industry Standard Architecture.

Jumpers: A device on the system board used to

configure certain information on the board.

POST: Power On Self Test. The computer’s self-

diagnostic test, which is executed whenever
the system is booted.

Setup: Steps used to configure the system board.

SIMM: Single In-line Memory Mo dule. SIMMs are

banks of memory used to increase the
performance of the computer.

SRAM: Static Random Access Memory.

Micronics Computers, Inc. G-1

Limited Warranty

Except as described below, Micronics warrants the products
to be free from defects in material and workmanship in
normal use for a period of one (1) year after date of
purchase. Should any product fail to perform according to
this warranty at any time during the warranty period, except
as provided below, Micronics or its authorized service
centers will, at Micronics’ option, repair or replace the
product at no additional charge.

The warranty does not cover loss or damage which occurs
in shipment or which is due to: (1) improper installation or
maintenance, misuse, neglect or any cause other than
ordinary commercial application, including without
limitation, accidents or acts of God; (2) adjustment, repair
or modification by other than a Micronics authorized
service center; (3) improper environment, excessive or
inadequate heating or air conditioning or electrical power
failures, surges or other irregularities; (4) any statement
about the product other than those set forth in this warranty;
or (5) nonconformity to models or samples shown to the
purchaser. Any models or samples were for the sole purpose
of suggesting the character of the product and are not
intended to form the basis of the bargain.

A receipt or copy of the invoice with the date of purchase
from a Micronics reseller is required before any warranty
service can be rendered. Service can be obtained by calling
Micronics for a Return Merchandise Authorization (RMA)
Number.

The RMA Number should be prominently displayed on the
outside of the shipping carton of the returned product.
Returned product should be shipped prepaid or hand carried
to Micronics. The purchaser assumes risk of loss or damage
in transit and, unless otherwise agreed to in writing by
Micronics, will pay inbound shipping charges.

Micronics Computers, Inc. W-1

Limited Warranty JX30WB System Board

Limited Warranty (Cont'd.)

The exclusive remedy of the purchaser under this warranty
above will be repair or replace at Micronics option, but if
for any reason that remedy should fail of its essential
purpose, the exclusive remedy of the purchaser shall then be
actual damages up to amounts paid for the defective product
by the purchaser. This limited warranty shall be deemed to
“fail of its essential purpose” if, after repeated efforts,
Micronics is unable to make the product operate as
warranted. Micronics’ liability for damages to the
purchaser for any cause whatsoever, regardless of the form
of action and whether in contract or in tort, shall be limited
to the purchase price in effect when the cause of action
arose for the product that is the basis of the claim.

Micronics will not be liable for any lost profits or any
indirect, special incidental or consequential damages in
connection with the product, even if Micronics has been
advised of the possibility of such damages.

Micronics makes no warranties or representations as to
performance of products or as to service to distributor or to
any person, except as set forth in Micronics; limited
warranty accompanying delivery of product.

Micronics disclaims all other warranties whether oral,
written, expressed, or implied, including without limitation,
the warranties of design, merchantability, or fitness for a
particular purpose, if applicable, or arising from a course of
dealing, usage or trade practice.

W-2 Micronics Computers, Inc.

JX30WB System Board Limited Warranty

Non-Warranty Service

After the one year warranty service is no longer in effect,
service is still available for Micronics products. For more
information, contact Micronics’ RMA department at (510)
651-2300. The RMA department is open between 8:30
A.M. and 5 P.M. Pacific Standard time.

W-3 Micronics Computers, Inc.

User’s Comment Form: JX30WB

What do you like about this manual?

What would you change in this manual?

Mail comments to:

Micronics Computers, Inc.

Technical Publications Department

232 E. Warren Avenue

Fremont, CA 94539

Name: Dealer:
Title: Date:
Company: Telephone:
Address:

DOCUMENT NUMBER: O6-00192-01, REV. 1B

AUGUST 1994

PRINTED IN THE USA

POST and Boot Error Messages ....................................................... 1

Beep Codes ................................................................ ....................... 1

Hard Disk Types ................................ ............................................... 1

Specifications................................ .................................................... 1

Battery Disposal ................................................................ ............ 3

Environmental Specifications ....................................................... 3

Temperature Range ................................ ................................... 3

Relative Humidity (Non-Condensing) ................................ ...... 3

lossary................................................................ ............................... 1

Limited Warranty................................ .............................................. 1

Non-Warranty Service ................................ .................................. 3

Table A-1. POST Messages ................................ .............................. 1

Table B-1. Beep Codes ................................ ..................................... 2

Table C-1. Hard Disk Types ................................ ............................. 1