ASUS SMM User Manual

R

ASMM

System Monitoring Module

USER’S MANUAL

USER’S NOTICE

No part of this manual, including the products and software described in it, may be repro­duced, transmitted, transcribed, stored in a retrieval system, or translated into any language
in any form or by any means, except documentation kept by the purchaser for backup pur­poses, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).

ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
W ARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A P AR­TICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
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PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DAT A, INTERRUPTION OF BUSI­NESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL
OR PRODUCT.

Product warranty or service will not be extended if: (1) the product is repaired, modified or
altered, unless such repair, modification of alteration is authorized in writing by ASUS; or
(2) the serial number of the product is defaced or missing.

Products and corporate names appearing in this manual may or may not be registered trade­marks or copyrights of their respective companies, and are used only for identification or
explanation and to the owners’ benefit, without intent to infringe.

• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.

• IBM and OS/2 are registered trademarks of International Business Machines.

• Windows and MS-DOS are registered trademarks of Microsoft Corporation.

• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
The product name and revision number are both printed on the product itself. Manual revi-

sions are released for each product design represented by the digit before and after the period
of the manual revision number. Manual updates are represented by the third digit in the
manual revision number.

For previous or updated manuals, BIOS, drivers, or product release information, contact ASUS
at http://www.asus.com.tw or through any of the means indicated on the following page.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FUR­NISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT
ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COM­MITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR
ANY ERRORS OR INACCURACIES THA T MAY APPEAR IN THIS MANUAL, INCLUD­ING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Copyright © 1998 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS ASMM
Manual Revision: 1.01
Release Date: February 1998

2

ASUS ASMM User’s Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing

Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
BBS: [phone]
Email: [e-mail]
WWW: www.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL

Marketing

Address: 6737 Mowry Ave, Mowry Business Center, Building 2,

Newark, CA 94560, USA
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
BBS: [phone]
Email: [e-mail]
WWW: www.asus.com
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER GmbH

Marketing

Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Hotline: [phone]
BBS: 49-2102-448690
Email: [e-mail]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

ASUS ASMM User’s Manual 3

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4

ASUS ASMM User’s Manual

CONTENTS

Introduction......................................................................................7

ASUS ASMM System Monitoring Module.....................................8

Motherboard Server Connector .......................................................8

Server Monitor Card Specifications ................................................9

System Monitor................................................................................9

System Control ..............................................................................10

System Notification .......................................................................10

ASMM Color-Coded Cabling........................................................10

Programming Interface ..................................................................11

LM 78....................................................................................... 11

Automatic Server Restart ......................................................... 11

ASR Status/Control Register (0x0298/Read/Write)...........11

Chassis Intrusion Reset Register (0x0299/Write only) ......12

ASR Trigger Register (0x029A/Write only) ......................12

ASR Enable/Disable Register (0x029B/Write only) ..........12

ASR Enable/Disable Sequence and Test ............................13

Secure Mode Enable/Disable Sequence .............................13

Early Access of ASR ..........................................................13

Jumper and Connector Settings .....................................................14

Jumpers ....................................................................................14

Connectors................................................................................15

ASUS ASMM User’s Manual 5

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. Operation is subject to the following
two conditions:

• This device may not cause harmful interference, and

• This device must accept any interference received, including interference that
may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installa­tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with manufacturer’s instructions, may cause
harmful interference to radio communications. However , there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the inter­ference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which
the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

WARNING! The use of shielded cables for connection of the monitor to the

graphics card is required to assure compliance with FCC regulations. Changes
or modifications to this unit not expressly approved by the party responsible for
compliance could void the user’s authority to operate this equipment.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Cana­dian Department of Communications.

6

ASUS ASMM User’s Manual

I. ASUS ASMM

Introduction

The ASUS ASMM (System Monitoring Module) allows you to monitor the system
temperature, fan speed, and voltages to enhance system stability.

IMPORTANT! If your motherboard is equipped with the LM78 chipset, your

system will report a warning since both LM78s (motherboard and ASMM’ s) use
the same I/O address (0x0290), which is necessary for the LDCM software to
function. Future BIOS will automatically disable the onboard LM78 if the ASMM
is detected. You can manually disable the motherboard’s LM78 if your BIOS
does not have this feature. If your motherboard does not have LM78, no modifi­cations are necessary to use the LDCM software.

Procedures for disabling the motherboard’s LM78:

1. Create a bootable disk by formatting a floppy disk with system files.

Introduction

I. ASUS ASMM

2. Copy the PCI control program PCICFG.EXE to the disk

3. Copy the DOS utility DEBUG.COM to the disk (NOTE: DEBUG.COM must
be the same version as the DOS version on the disk otherwise, it will not run)

4. With the disk inserted, restart the system and press DELETE to enter BIOS setup.

5. Adjust the BIOS boot sequence to A:, C: (that is, boot from floppy first).

6. Save and exit the BIOS setup.
NOTE: Ignore the next hardware monitor error from the LM78 conflict.

7. Under the appropriate prompt signs, type the following:

A> PCICFG <ENTER>
BUS00> WD 1 3 60 00670290 <ENTER> (disables the motherboard’s LM78)
BUS00> Q <ENTER> (exits the PCI control program)
A> DEBUG <ENTER>
> A <ENTER>
xxxx:0100 int 19 <ENTER>
xxxx:01yy <ENTER> (then remove the disk from the floppy drive)
> G <ENTER>

ASUS ASMM User’s Manual 7

I. ASUS ASMM

I. ASUS ASMM

Parts/Layout

ASUS ASMM System Monitoring Module

Server Monitor
Signal Connector
(TO MOTHERBOARD

SERVER CONNECTOR)

Key Unlock
Signal Connectors

RESET Signal
Connectors

Chassis Fan Connector
CPU1 Fan Connector

NCNCNC

Power LED

SMB Clock

NC

Ground

Ext SMI#

CPU1 TH

Server Connector

SMB Data

CPU2 TH

11

1

NCNCNC

Minimum Server Monitor
Signal Connector

TO MOTHERBOARD

SERVER

CONNECTOR

+3V Standby

Keyboard Lock

TH REFV

20

10

NC

Reset

KLOCK_C

KLOCK_MB

RSTCON_C

RSTCON_MB

Chassis Fan

CPU 1 Fan

TO MOTHERBOARD

EXTERNAL

MICRO-SWITCH

JP4

Automatic Server Restart

Period Selection

Chassis Connector
(TO MOTHERBOARD

EXTERNAL MICRO-SWITCH)

Battery Power (≤10µA)

Photo Sensor

JP5

R

LM78

Hardware

Monitor

JP6

Intrusion Signal

Ground

JP7

Chassis Intrusion

Selection

CR2032

3V Button

Cell Battery

CPU 2 Fan

Hardware Monitor

CPU2 Fan Connector

8-bit ISA Connector

Motherboard Server Connector

Pin 1

(NC)
(NC)
(NC)

Ground

(NC)

CPU1 TH

Ext SMI#

CPU2 TH

(NC)

Reset

Server Connector

(NC)
(NC)
(NC)
Power LED
SMB Clock

SMB Data
Keylock
+3Volt Standby
TH REFV

ASUS ASMM User’s Manual8

I. ASUS ASMM

Server Monitor Card Specifications

BUS: 8-bit ISA bus
Battery: Lithium battery, 210mA/hour
Thermal Monitoring: Onboard temperature sensor
Voltage Monitoring: +12V, -12V, +5V, -5V, +3.3V (+3.3V needs external cable)
Fan Speed Monitoring: 3 tachometers are provided to detect fan speed as low as

660rpm(needs cooling fan with extra signal line)
Chassis Intrusion Monitoring: Optical chassis detection circuit is built-in (external

intrusion detection connector is also provided)

Security Mode: Keyboard lock/unlock, Reset enable/disable (requires Feature cable)
Automatic Server Reset/Restart: Server can be hard reset after a system hang is

detected (requires Feature cable)

Mechanical: Half-length ISA card (length: 10.3cm, height: 8.8cm)
Connectors

20-pin external Feature connector for ASUSTeK SMH (Server Monitor Header)
5-pin external keylock connector
2-pin external reset connector
5-pin keylock panel connector
2-pin reset panel connector
3-pin extended fan connectors

I. ASUS ASMM

Specifications/System

System Monitor

Voltages: +5V, -5V, +12V, -12V, +3V
Temperature: Card temperature
Tachometer: 3 fan speed detectors
Chassis Intrusion: Onboard Photo-resistor and Chassis intrusion external connector
ASR Reset Status: Under ASR (Automatic Server Restart) Test mode, one can ac-

cess the status of ASR RESET signal while no real system reset will be active.
Card Rev. ID: For future upgradability, a card rev. ID is provided to enable the

software to identify the card and adapt for it.

ASR Status: One can recognize whether the ASR function is enabled or disabled.

ASUS ASMM User’s Manual 9

I. ASUS ASMM

I. ASUS ASMM

System/Cabling

System Control

Reset Button: Hard reset enable/disable
Keylock: keyboard lock/unlock
ASR: Enable, disable, and test
ASR period: ASR period selection through mini-jumper (30/120/240/330 seconds)
Chassis Intrusion: As this status will be backup through battery, one can clear the

memorization of intrusion circuit.

System Notification

The system can be notified when the voltage/temperature/fan speed exceeds the
predefined thresholds. The notification mechanism can be as simple as polling or
through SMI#/IRQ service routine, depending on the programming of LM78. Five
ISA IRQs can be selected (IRQs 3, 4, 5, 6, 7) through hardware jumper.

ASMM Color-Coded Cabling

These connections are classified into 3 categories: chassis intrusion, fan monitor,
and server monitor.

Chassis intrusion:Chassis intrusion permits the activation of a user-installed alarm.
One 3-wire cable supports the external customized chassis intrusion alarm. The pin
definitions are: RED (battery power), YELLOW (intrusion signal), and BLACK
(ground). The external intrusion signal should be open-drained.

Fan monitor: The fan monitor provides power for up to 3 fans while monitoring
the connected fans’ rotation through the specially designed tachometer. Three 3­wire cables are used to extend the length of each fan connection. The pin definitions
are: YELLOW (tachometer signal), RED (+12V), and BLACK (ground).

Server monitor: The server monitor contains many signals that can be monitored
and controlled through the software. The server monitor signals are: CPU voltage
ID for Pentium II processor (N.A. in P/I-P65UP8), key lock and reset, CPU1 and
CPU2 Vcore (N.A. in P/I-P65UP8), +3.3V, I2C bus (N.A. in P/I-P65UP8), and CPU1
and CPU2 thermister (N.A. in ASMM), EXTSMI#. One 20-wire ribbon cable is
used. The red stipe indicates pin 1.

NOTE: If you want to test the security mode, the KEYLOCK and RESET connec­tions must be correct. If the position of the reset signal is wrong, the reset inhibit
function may not work.

ASUS ASMM User’s Manual10

I. ASUS ASMM

Programming Interface

LM 78

The LM78 address is fixed on I/O port 0x0290–0x0297 by default, as follows:

0x0290 Power On Self Test codes from ISA bus
0x0294 Power On Self Test codes from ISA bus
0x0295 The LM78 internal Address register
0x0296 Data register

For the relative programming interface, refer to the N.S. LM78 data sheet.

Automatic Server Restart

Four I/O ports are defined in this revision and are allocated on I/O space 0x0298–
0x029F by default. These 4 I/O ports are ASR status/control register, Chassis intru­sion reset register, ASR trigger register, and ASR enable/disable register.

ASR Status/Control Register (0x0298/Read/Write)

Read (default value: 00x0001)
bit 7:6 Card revision ID

00 SMC rev 1.x
others Reserved

I. ASUS ASMM

Programming Interface

bit 5 ASR under reset. Because ASR needs a much longer time to be reset, this bit

should be polled by the BIOS/application before it can be accessed. A “0” indi­cates the ASR is under reset such that the BIOS/application must wait until it
becomes a “1”. A “1” means the ASR is now out of reset and free for access.

bit 4 ASR test output. Under test mode, a “0” indicates a timeout event occurred

as being too long without writing to the ASR trigger register.

bit 3 ASR enable or disable. A “0” depicts ASR function is disabled; a “1” indi-

cates the ASR is enabled. While ASR is enabled, if the ASR is not under test
mode, ASR trigger register must be written within a pre-specified time pe­riod or the system will get a hard reset.

bit 2 Mode select A

“0” Secure mode is disabled (default)
“1” Secure mode is selected. The system will enter the secure mode (key-

board is locked, reset button is disabled) after a special I/O write se­quence is executed.

ASUS ASMM User’s Manual 11

I. ASUS ASMM

Programming Interface

I. ASUS ASMM

bit 1 Mode select B
“1” ASR is in normal mode. The ASR can be enabled after a special I/O write

sequence is executed.
“0” ASR is under test mode.
bit 0 System in secure mode. A “0” indicates the system is now under secure

mode. A “1” depicts the system is now free for control.

Write

bit 7:3 Reserved.
bit 2 Mode select A

Writing a “1” will select secure mode while it will be enabled after a special I/

O write sequence is executed. A “0” will deselect the secure function.
NOTE: If secure mode is selected and entered, deselecting the secure mode will not

free the system out of secure mode. You must execute the special I/O write sequence
to disable the secure function.

bit 1 Mode select B

Writing a “1” will select ASR under normal mode while ASR will be en-

abled after a special I/O write sequence is executed. A “0” will deselect the

secure function.
bit 0 Reserved
NOTE: If ASR is enabled, putting ASR in test mode will not get the system out of

the ASR normal mode. You must execute the special I/O write sequence to disable
the ASR function.

Chassis Intrusion Reset Register (0x0299/Write only)

Writing any value to this I/O port will clear the memory of the chassis intrusion
circuit. This function may only be activated under administrator control. The status
of chassis intrusion can be retrieved by accessing LM78.

ASR Trigger Register (0x029A/Write only)

Periodically executing I/O write to this port will keep the system reset from driving.
Otherwise, a system hard reset will be generated after a pre-specified period of time
with no I/O write to this register if ASR is enabled.

ASR Enable/Disable Register (0x029B/Write only)

A data pattern of xxxx_0001b must be written into this port to produce a special I/O
write sequence to enable ASR and secure function.

ASUS ASMM User’s Manual12

I. ASUS ASMM

ASR Enable/Disable Sequence and Test

The ASR function will be enabled by consecutively writing three I/O writes to the
ASR enable/disable register with data pattern of xxxx_0001b. After these I/O writes
are executed, bit 3 of the ASR status/control register will be set to “1” and bit 4 of the
ASR status/control register will become “0” when there is no I/O write to the ASR
trigger register within a pre-specified period of time. (The time period can be selected
through 2 mini-jumpers with 30-, 90-, 240-, 330-second options.) The system will get
a reset if the bit 1/Mode Select B of the ASR status/control register is set to “1” (nor­mal mode). Otherwise, no system reset will be generated; the application can test the
function of the ASR circuit by polling bit 4 of the ASR status/control register without
writing to the ASR trigger register for the pre-specified time for checking whether it
becomes “0” or not. If it is not, the ASR is malfunctioning. If it is, the application can
then issue an I/O write to the ASR trigger register and wait for 30ms. Then bit 4 of the
ASR status/control register can be checked again to see if it has changed to “1”. If it
has, the ASR circuit is correct. Otherwise, the ASR function is not working.

I. ASUS ASMM

Programming Interface

After the ASR function is enabled, consecutively writing three I/O writes to the ASR
enable/disable register with data pattern “xxxx_0001” can disable the ASR function. It
can be verified by reading bit 3 of the ASR status/control register to check if it has
changed “0”. If it has, the ASR is disabled. Otherwise, the SMC card is malfunctioning.

Secure Mode Enable/Disable Sequence

The system will enter secure mode only when bit 2/Mode Select A of the ASR sta­tus/control register is set to “1”, then two consecutive I/O writes to the ASR enable/
disable register with data pattern “xxxx_0001” and then another consecutive I/O
write to the ASR trigger register are completed. While the system is under secure
mode, the keyboard will be locked and reset button disabled.

Two consecutive I/O writes to the ASR enable/disable register with data pattern
“xxxx_0001” and then another consecutive I/O write to ASR trigger register will
bring the system out, unlock the keyboard and enable the reset button.

Early Access of ASR

Because the ASR needs more time to be reset (1 more second than the main system),
unexpected problems can occur if someone tries to access/test/arm the ASR in the
BIOS/application while the ASR is still under reset. So, a new status bit called “ASR
under reset” has been added to the ASR status/control register so that the BIOS/
application can poll this bit first to make sure the ASR is out of reset and free for
access. Before you access the ASR, you must test this bit and check the related ASR
setting (that is, the ASR setting is what you want it to be) as long as there is any
possibility that the ASR has been reset for some other reason. For the BIOS, this bit
must be tested before it can access/control the ASR.

ASUS ASMM User’s Manual 13

I. ASUS ASMM

I. ASUS ASMM

Jumpers

Jumper and Connector Settings

Jumpers

JP1: LM78 I/O space select (Option; PROVIDED BY NEGOTIATION)

1-2 0x0290–0x0297 (default)
3-4 0x02B0–0x02B7
5-6 0x02D0–0x02D7
7-8 0x02F0–0x02F7

JP2: ASR I/O space select (Option; PROVIDED BY NEGOTIATION)

1-2 0x0398–0x039F
3-4 0x03B8–0x03BF
5-6 0x03D8–0x03DF
7-8 0x03F8–0x03FF

JP3: FAN 3 double pulse selection (Option; PROVIDED BY NEGOTIATION)

1-2 FAN 3 gets normal FAN pulse signal (default SHORT)
2-3 FAN 3 gets double FAN pulse signal

JP4/JP5: ASR period selection

JP4 JP5 Period select

2-3 2-3 5.5 min
1-2 2-3 4 in
2-3 1-2 1.5 min
1-2 1-2 30 sec

JP6: LM78 IRQ selection

JP6 IRQ select JP6 IRQ select

1-2 IRQ3 7-8 IRQ6
3-4 IRQ4 9-10 IRQ7
5-6 IRQ5

NOTE: Only one jumper can be set or IRQ lines will get conflict.
JP7: Chassis intrusion selection

JP7 Period select

2-3 Disable the Chassis intrusion detection on ASMM
1-2 Enable the Chassis intrusion detection on ASMM

ASUS ASMM User’s Manual14

I. ASUS ASMM

Connectors

• SERVER_CON: Full set server monitor signal connector

Pin# Name I/O Description

1 VID4 I Pentium II VID4
2 VID2 I Pentium II VID2
3 VID0 I Pentium II VID0
4 PGND - Power LED ground connect
5 VCORE 1 I VCORE voltage from CPU 1
6 THRMR-R1 I One thermister on motherboard (default for CPU1)
7 EXTSMI# O EXTSMI# to generate SMI# signal (O.D.)
8 THRMR-R2 I The other thermister terminal on motherboard (default for CPU2)

9 THRM# O A signal to indicate abnormal temperature is detected (O.D.)
10 RESET# O RESET signal to hard reset motherboard (O.D.)
11 VID3 I Pentium II VID3
12 VID1 I Pentium II VID1
13 VCORE 2 I VCORE voltage from CPU 2
14 PLED - Power LED power connect
15 SMBCLK I I2C bus clock (O.D.)
16 Key

Connectors

I. ASUS ASMM

17 SMBDATA I/O I2C bus data (O.D.)
18 KEYUNLK -/O Key unlock signal for motherboard (O.D.)
19 +3V I +3V from motherboard for measurement

20 Vtherm O Reference voltage for thermister

• MINI_CON: Minimum server monitor signal connector

Pin# Name I/O Description

1 THRMR-R1 I One thermister terminal on motherboard
2 +3V I +3V from motherboard for measurement
3 THRM# O A signal to indicate abnormal temperature is detected (O.D.)
4 Vtherm O Reference voltage for thermister
5 Key
6 VCORE I VCORE voltage from CPU

ASUS ASMM User’s Manual 15

I. ASUS ASMM

I. ASUS ASMM

Connectors

• KLOCK_A/KLOCK_B: Key unlock signal connectors for intercepting the

KEYUNLK signal for processing.

Pin# Name I/O Description

1 Power LED - +5V for Power LED
2 N.C.
3 GND - GROUND
4 KEYUNLK - KEY unlock signal

5 GND - GROUND

NOTE: The key unlock connector from the chassis can be connected to either one
of these connector while the other connector must be connected to the motherboard
key unlock header

• RSTCON_A/RSTCON_B: RESET signal connectors to intercept the reset but-

ton for processing

The reset signal connector from the chassis can be connected to either one of these
connector while the other connector must be connected to the motherboard reset
button header.

• EXT_I2C: External I2C bus connector to provide external access to the system

resource from the I2C bus.

Pin# Name I/O Description

1 SMBDATA I/O I2C bus data (O.D.)
2 +5V O Power for external I2C device
3 GND - GROUND

4 SMBCLK I I2C bus clock (O.D.)

• CHASSIS: Header designed to provide a connection to the customer’s self-de-

signed chassis intrusion hardware.

NOTE: Because the hardware is powered by battery, the power consumption must be
carefully limited. It is 20 µA for the external detection circuit.

Pin# Name I/O Description

1 BATT - +3V power for external circuit
2 INTRUD I Chassis intrusion signal. “H” indicates intrusion. “L” indicates

chassis is closed.
H: above or equal to 2.5V; L: below or equal to 0.8V

3 GND - GROUND

ASUS ASMM User’s Manual16