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Acer ALTOS 19000 Initiate Sync Negotiation, Maximum Sync Transfer Rate

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AcerAltos 19000 User’s Guide

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Initiate Sync Negotiation

This option determines whether the SCSI controller initiates synchronous

negotiation with the SCSI device.

When set to yes, the SCSI controller initiates synchronous negotiation with the

SCSI device. When set to no, the SCSI controller does not initiate synchronous

negotiation. The SCSI controller, however, always responds to synchronous

negotiation if the SCSI device initiates it. The default setting is yes.

Data is transferred in asynchronous mode if neither the SCSI controller nor the

SCSI peripheral negotiates for synchronous data transfers.

Some older SCSI-1 devices do not support

synchronous negotiation. This may cause

your computer to operate erratically or hang

if Initiate Sync Negotiation is enabled. Set

Initiate Sync Negotiation to no for these

devices.

Maximum Sync Transfer Rate

This option determines the maximum synchronous data transfer rate that the

SCSI controller can support. The SCSI controller supports rates up to the Fast

Wide SCSI maximum of 20.0 MBytes/sec. The default value is 20.0.

Contents

Main Page iii IMPORTANT SAFETY INSTRUCTIONS Page FCC Class A Radio Frequency Interference Statement Table of Contents Chapter 1 System Introduction............................................. 1-1 Chapter 2 Setting Up the System .........................................2-1 Chapter 3 System Housing....................................................3-1 Chapter 4 System Board........................................................4-1 Chapter 5 BIOS Utility............................................................ 5-1 Page Chapter 6 Utilities...................................................................6-1 Chapter 7 SCSISelect Configuration Utility..........................7-1 Page List of Figures Page Page List of Tables Conventions Chapter 1 System Introduction 1.1 Features 1.1.1 Intel Pentium Pro Processor First-level and Second-level Cache Advanced Peripheral Interrupt Controller (APIC) Bus Controller Pentium Pro Processor Architecture Chapter 1 - System Introduction 1-3 1.1.2 System Architecture Figure 1-2 System Architecture System Bus PCI and EISA Buses PCI Bridge (PB) Memory Controller (MC) 1.1.3 SCSI Subsystem 1.1.4 Server Management 1.1.5 Redundant Power Supply Subsystem 1.1.6 Security 1.2 External Configuration 1.2.1 Front Panel Front Panel Features CD-ROM Drive 3.5-inch Diskette Drive Power Switch LED Indicators Table 1-1 LED Indicator Description (Right to Left) LCD Display Screen Table 1-2 lists the LCD messages from the system BIOS and the microcontroller at power on. Table 1-2 LCD Messages RDM Button 1.2.2 Rear Panel Page Chapter 2 Setting Up the System 2.1 Pre-installation 2.1.1 Selecting a Site 2.1.2 Checking the Package Contents 2.1.3 Preparing the System Unit Page Page Page Page 2.3 System Startup 2.3.1 Unlocking the Front Panel Security 2.3.2 Turning On the System Power 2.4 Power-on Problems Page Page Left Panel Right Panel 3.2 Removing the Housing Doors Turn off the system and disconnect the AC power cord before opening the system housing. Table 3-1 Removing the Housing Doors Page Page Page 3.3 SCSI Backplane Boards 3.3.1 Features 3.4 Front Panel Board 3.5 Power Subsystem 3.6 ESD Precautions 3.7 Installing Additional Devices Page Page Page Page 4-2 4.1.1 Layout Figure 4-1 System Board Layout Page Table 4-1 Jumper Settings Voltage ID Settings Page Chapter 4 - System Board 4-7 Table 4-3 Connector Functions Figure 4-5 Clock Frequency Ratio Setting (CN15) 4.1.3 Installing a Pentium Pro Processor Page 4.2 Memory Board 4.2.1 Layout 4.2.2 Rules for Adding Memory 4-12 4.2.3 Memory Configurations Table 4-4 Memory Configurations 4.2.4 Installing a SIMM Page Page Page 4.2.7 Reconfiguring the System Page Chapter 5 BIOS Utility 5.1 Entering Setup To enter Setup, press the key combination ++ . The BIOS Utility main menu then appears: 5.2 Basic System Configuration 5.2.1 Date and Time Date Time 5.2.2 Diskette Drives 5.2.3 Hard Disk Drives Selecting the Auto Option Selecting the User Option 5.2.4 System Memory 5.2.5 Math Coprocessor 5.2.6 Video Display 5.2.7 Communication Settings 5.2.8 Enhanced IDE Features Hard Disk Size > 504 MB Hard Disk Block Mode 5.2.9 Large Memory Support Mode 5.2.10 Num Lock After Boot 5.2.11 Memory Test 5.2.12 Auto Configuration Mode 5.2.13 Fast Boot Mode 5.3 Advanced System Configuration The following screen shows page one of the Advanced System Configuration parameters. 5.3.1 Shadow RAM 5.3.2 L1 and L2 Cache (CPU Cache) Cache Scheme Video Buffer Memory Type 5.3.3 Memory at 15MB-16MB 5.4 System Security Setup 5.4.1 Disk Drive Control Table 5-1 Drive Control Settings 5.4.2 Onboard Communication Ports Serial Port 1 Base Address This parameter enables serial port 1 as COM1 and sets its base address. Table 5-2 Serial Port 1 Settings Serial Port 2 Base Address Parallel Port Base Address Operation Mode ECP DMA Channel 5.4.3 Onboard PS/2 Mouse (IRQ12) 5.4.4 Setup Password Setting a Password Page 5.5 PCI System Configuration 5.5.1 PCI IRQ Setting PCI Slots 5.5.2 VGA Palette Snoop 5.5.3 Onboard SCSI Boot Device Chapter 5 - BIOS Utility 5-25 5.6 Non-PnP ISA Card Configuration The grayed items (denoted with asterisks) have fixed settings and are not user- configurable. 5-26 5.6.1 IRQ/DMA 5.6.2 Expansion ROM Region 5.6.3 I/O Region Yes 5.6.4 Local Memory Region 5.7 Remote Device Manager (RDM) 5.8 Load Setup Default Settings 5.9 Leaving Setup Chapter 6 Utilities 6.1 Acer Server Manager (ASM) Pro 6.2 Remote Device Manager (RDM) 6.3 EISA Configuration Utility (ECU) Functions Making Menu Selections Using the mouse Getting Help 6.3.1 Starting the ECU 6.3.2 ECU Main Menu Steps in Configuring Your Computer Main Menu Selections Step 1: Important EISA Configuration Information Step 2: Add or Remove Boards Step 3: View or Edit Details Chapter 6 - Utilities 6-11 Step 3: View or Edit Details Figure 6-4 View or Edit Details Step 4: Examine Switches or Print Report Chapter 6 - Utilities 6-13 Step 5: Save and Exit Figure 6-6 Save and Exit Step 5: Save and Exit 6.3.3 Configuring Your Computer for the First Time Page Page 6.3.4 Adding or Removing Boards Adding Boards h Removing a Board c 6.3.5 Configuring Memory Page Page 6.3.6 Viewing or Editing Configuration Details Advanced Menus 6.3.7 What To Do If Your Nonvolatile Memory Is Invalid Page 7-2 Table 7-1 Default Settings for SCSI Controller and All Devices Global Settings for SCSI Controller and All Devices Default Value Individual Settings for Each SCSI Device Default Value 7.1.2 When to Use the SCSISelect Utility 7.1.3 Running the SCSISelect Utility 7.2 SCSISelect Utility Options 7.2.1 Configure/View Host Adapter Settings Menu 7-6 Figure 7-3 Host Adapter SCSI ID Selection Screen for AIC-7880 Host Adapter SCSI ID * SCSI Parity Checking * Host Adapter SCSI Termination Figure 7-5 Host Adapter SCSI Termination Selection for AIC-7880 Use the cursor ( ) and Enter keys to make your selection. Boot Device Options SCSI Device Configuration Chapter 7 - SCSISelect Configuration Utility 7-11 Figure 7-7 SCSI Device Configuration Screen for AIC-7880 Initiate Sync Negotiation Maximum Sync Transfer Rate Enable Disconnection Initiate Wide Negotiation Send Start Unit Command Page 7-16 Advanced Configuration Options Figure 7-8 Advanced Configuration Options Screen Host Adapter BIOS This option enables or disables the SCSI controller BIOS. The default setting is Enabled. Support Removable Disks Under BIOS as Fixed Disks Extended BIOS Translation for DOS Drives > 1 GByte Display <Ctrl-A> Message During BIOS Initialization Multiple Lun Support BIOS Support for More Than 2 Drives Page 7.2.2 SCSI Disk Utilities Format Disk Verify Disk Media 7.3 Configuring Multiple SCSI Controllers 7.4 Disk Drives Over 1 Gbyte 7.4.1 Extended Translation 7.4.2 The DOS 1 GByte Limit 7.4.3 When to Use Extended Translation With MS-DOS 5.0 and Above Drives With Mixed Partitions Using Fdisk Questions and Answers About Extended Translation 7.5 SCSI Troubleshooting Checklist 7.6 BIOS Startup Messages 7.6.1 Device connected, but not ready. 7.6.2 Start unit request failed. 7.6.3 Disk Drive Configuration Problems Booting the Computer from a SCSI Drive Using a Standard Drive as C and a SCSI Drive as D Using a SCSI Drive as C and Another SCSI Drive as D Computer Hangs, or SCSI Controller Cannot Always Find the Drives Page Appendix A System Resources A.1 Memory Map Table A-1 System Memory Map A.2 I/O Address Map Table A-2 System I/O Address Map Table A-2 System I/O Address Map (continued) A.3 Interrupt Channels A.4 System Default Configuration The following tables show your systems factory default configuration. Page Page Table A-8 System Security Page Page Appendix B SCSI Backplane Boards B.1 Features AcerAltos 19000 Users GuideB-2 B.2 Layout Figure B-1 SCSI Backplane Board B.3 Jumper Settings B.4 Hard Disk ID Feature B.5 Channel Configuration Single-Channel Configuration Page Dual-Channel Configuration Page Page Page Page B.7 Using the Hot-swap Feature Page Page Appendix C Power Subsystem Page Page Page Page Page C.3 Removing a Power Supply Module ` Page C.4 Power Cable Connections Table C-1 Power Backplane Connections Figure C-9 illustrates the power cables that connect to the system board. Page Page Page Page Page Page Page Page Index A B C D E F G H I J N O P R S T U V Page Release Note AcerAltos 19000 Update RDM LED Location