Adaptec 1744, AHA-1740A, 1742A user manual Host Adapter Bios Operation, Standard Mode Operation

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Chapter Six

Host Adapter BIOS Operation

The AHA-1740A/1742A/1744 BIOS operates in two modes: stand- ard and enhanced. The mode of operation is selected with the use of the EISA Configuration utility supplied with you EISA com- puter system.

Standard Mode Operation

When the adapter BIOS is operating in the standard mode, only SCSI IDs 0 and 1 are supported. The fixed disk that is configured as SCSI ID 0 is the boot disk drive. The BIOS only looks for a disk at SCSI ID 1 if a disk drive was found at SCSI ID 0 and no non-SCSI disk drives are installed.

The following message appears on the display when you boot the computer system and the standard operation mode is selected.

Adaptec AHA-1740 BIOS v1.34

Copyright 1991 Adaptec, Inc.

[Standard Mode]

Target 0 - Drive C: (80h)

Target 1 - Device not found.

Figure 6-1. Standard BIOS Boot Message

6-1

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Contents User’s Manual Page User’s Manual Copyright Iii Page Table of Contents Adaptec Glossary Index List of Tables List of FiguresPreface Bold ConventionsPage South milpitas blvd. ∙ milpitas, ca 95035 ∙408945-8600 General Product Information OverviewAdaptec EISA-to-Fast Scsi Host Adapter Overview AHA 1740A/1742A/1744 Program Files Installation SoftwareAHA 1740A/1742A/1744 Operation Modes Bios Operation ModesSystem Caching Description AHA-1740A/1742A/1744 Product Specifications Product Specifications∙ Technical Reference Manual ∙ Installation GuideAssociated Documentation Unpacking and Inspection Hardware InstallationPreparation Scsi Device Termination Scsi TerminatorsScsi ID Scsi ParityPhysical Installation in the System Adaptec Multiple Host Adapter Support Standard ModeEnhanced Mode Standard and Enhanced Modes Running the ADL Program Adaptec Download UtilityHost Adapter Listing ADL Main Menu Download Firmware Screen Download FirmwareDownload Warning Message Screen Firmware Information Enhanced Mode Firmware InformationLow-Level Format Device Selection Screen Low-Level FormatLow-Level Format Option Selection Screen Low-Level Format Options screen displaysExiting the ADL Program Exiting the ADL ProgramPage Standard Mode Operation Host Adapter Bios OperationAdaptec Enhanced Bios Boot Message Enhanced Mode OperationBoot Message With Error Detection Enabled Determining Problems Using the LED TroubleshootingAHA 1740A/1742A/1744 LED Flash Codes Problems Detected During InstallationEISA-to-Fast Scsi Host Adapter Troubleshooting Problems Using a Scsi and a Standard Disk Drive Problems Booting the System from a Scsi DriveProblems Using Two Scsi Drives Adaptec DOS 1 Gigabyte Limit Extended Translation Using DOSDisk Drives Over 1 Gigabyte Drives With Mixed Partitions When to Use Extended Translation With DOS Version 5 OnlyUsing Extended Translation Load ASW-1410 v3.0a Using FdiskQuestions and Answers About Extended Translation Adaptec DOS/Windows Loading the I/O Operating Environment SoftwareUnix Novell NetWareOS/2 Glossary Command Control Block Bus Device ResetCommand Descriptor Block Asynchronous Event NotificationConfiguration Common Command SetDirect Memory Access Control MicroprocessorHost Enhanced ModeFirmware IBM PC-AT Compatible Host AdapterIndustry Standard Architecture InitiatorMailbox Out MailboxManager Multi-tasking OperationScsi Device Scatter/GatherSingle-Ended Single-Threaded OperationSynchronous Data Transfer Standard ModeSynchronous Data Transfer Negotiation Tagged QueuingIndex AHA-1740A/1742A/1744 Index-2 Index-3 AHA-1740A/1742A/1744 Index-4