Adaptec 1742A User Manual

AHA-1740A/1742A/1744EISA-to-Fast SCSIHost AdapterUser’s Manual

List of FiguresFigure 2-1. SCSI Device Termination . . . . . . . . . . . . . . . . . . 2-3Figure 3-1. System Configuration Overview . . . . . . .

PrefaceThis User Guide provides information relating to the operationof the Adaptec AHA-1740A/1742A/1744 EISA-to-Fast SCSIHost Adapter in an EISA (Ext

ConventionsThe following typographic conventions are used throughoutthis Installation Guide.boldUsed for keystrokes (.. press the Enter key ..) and s

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Chapter OneOverviewThis User Guide provides software installation information forthe Adaptec AHA-1740A, 1742A, and the 1744 EISA-to-fast-SCSIbus maste

The AHA-1740A/1742A/1744 supports asynchronous, synchro-nous, and Fast SCSI data transfers on the SCSI bus. Asynchro-nous data transfers support up t

The AHA-1744 microcode is stored in an EEPROM. This allowsthe microcode to be changed with the Adaptec adl.exe program.The adl.exe program can also b

Installation SoftwareSoftware required to install the AHA-1740A/1742A/1744, in anEISA system, is provided in the ASW-C174 software package.The files c

BIOS Operation ModesThe AHA-1740A/1742A/1744 has two modes of operation: stand-ard mode and enhanced mode. The standard mode is softwarecompatible wi

System Caching DescriptionThe AHA-1740A/1742A/1744 fully supports operating systemscaching to maximize overall system performance. Having RAMon the h

Product SpecificationsThe following table lists some of the physical product descriptionsrelating to the AHA-1740A/1742A/1744 Host Adapters.Physical D

Associated DocumentationThe following documentation is also available for the AHA-1740A/1742A/1744:• Installation GuideThis includes basic installatio

Chapter TwoHardware InstallationUnpacking and InspectionThe carrier is responsible for damage incurred during shipment.In case of damage, have the car

PreparationThe configuration options for the AHA-1740A/1742A/1744 can beselected from software. Therefore, jumpers do not need to bechecked before in

SCSI TerminatorsThe SCSI bus must be terminated correctly to ensure proper op-eration. Only the first and last device on the SCSI bus (cable)should h

The RN5, RN6 and RN7 terminators on the AHA-1740A/1742Aare 150 ohm terminators. The RN2, RN4, and RN5 terminatorson the AHA-1744 are 330 ohm terminat

Physical Installation in the SystemThe following steps should be followed to install the AHA-1740A/1742A/1744 into the system:1. Turn OFF the power to

6. The 50-pin SCSI ribbon cable can now be attached to eachSCSI device. Refer to the device’s installation instruc-tions to ensure proper pin 1 orien

Chapter FourMultiple Host Adapter SupportThe AHA-1740A/1742A/1744 supports more than one host adapter in the system. The maximum number of host adapte

AHA-1740A/1742A/1744EISA-to-Fast SCSIHost AdapterUser’s Manual

Standard and Enhanced ModesIn general, the host adapter SCSI ID does not need to be changedfrom the default of 7. Even if two host adapters are instal

Chapter FiveAdaptec Download UtilityThe Adaptec Download utility (ADL) is used to download a differ-ent version of the microcode software to the AHA-1

Also ensure that the following microcode files are present.•standard.hexStandard mode microcode•enhanced.hexEnhanced mode microcodeTo run the program,

The installed host adapters are displayed. In this example, oneAHA-1744 is installed in slot 3. It is currently set to enhancedmode. Both standard

Download FirmwareAfter selecting Download Firmware, the next screen displays.Enter the filename of the microcode that you are going to down-load to th

After entering the filename, press the Esc key. The next screendisplays.The checksum of the microcode is displayed, which uniquely iden-tifies the mi

Firmware InformationThis menu option is used to display information on the installedfirmware. If the AHA-1740A/1742A1744 is operating in the stand-ar

Low-Level FormatThis option is used to low-level format, verify, or erase the bootsector of attached SCSI fixed disks on the AHA-1740A/1742A/1744.When

The Low-Level Format Options screen displays.Selecting Format/Verify causes the AHA-1740A/1742A/1744 tosend a SCSI Format Unit command to the selected

Exiting the ADL ProgramTo exit the adl program, press the Esc key and the followingscreen displays.Select Yes to exit.❐Figure 5-8. Exiting the ADL Pr

Copyright© Copyright 1992 Adaptec, Inc. All rights reserved. No part of this publication may bereproduced, stored in a retrieval system, or transmitte

Chapter SixHost Adapter BIOS OperationThe AHA-1740A/1742A/1744 BIOS operates in two modes: stand-ard and enhanced. The mode of operation is selected

The BIOS version and operation mode of the AHA-1740A/1742A/1744 appear at the top of the message, followed by alist of the identified SCSI devices.In

Enhanced Mode OperationThe enhanced mode operation enables the adapter BIOS to iden-tify all installed fixed disks with a valid SCSI ID.All SCSI IDs w

If Error if Device Not Found is enabled, through the EISA Con-figuration utility, then you will see a screen similar to the oneshown below:By default,

Chapter SevenTroubleshootingThe AHA-1740A/1742A/1744 executes a self-test diagnosticswhen the system power is turned on or after a Hard Reset. Theself

The following table lists the LED flash codes with the associatedfailure descriptions.Flash Code Failure DescriptionLED Remains On Host Adapter Contro

• LED on host adapter after power-on - The LED on theAHA-1740A/1742A/1744 should come on briefly after turn-ing the system power on. The LED should t

Problems Booting the System from a SCSI Drive•Make sure that both standard fixed disks are mapped outof the system.• Make sure that the SCSI boot driv

• Make sure that the SCSI drive to be used as drive D is setto SCSI ID 0:0. Check the drive manual for informationon setting the SCSI ID for that devi

Technical SupportThere are several ways to get technical assistance for your Adaptec product(s). Each isdescribed below. When requesting assistance,

• Power should be cycled OFF and ON after changing anyvalues on a host adapter, setup program, or SCSI deviceto be sure that the new initial values ar

Appendix ADisk Drives Over 1 GigabyteExtended Translation (Using DOS 5)Adaptec host adapters have always supported the full range ofdisk drive sizes u

When to Use Extended TranslationWith DOS Version 5 OnlyNetWare 386 and the newer versions of UNIX do not share the1024 cylinder limit of DOS and do n

Using FdiskTo install a new disk, or to re-partition an existing disk, use thefdisk DOS utility as you normally would. The cylinder size in-creases to

What if I use older versions of software drivers with ex-tended translation enabled?To protect your data, the host adapter will lock out any drivertha

Appendix BLoading the I/O OperatingEnvironment SoftwareDOS/WindowsUnder DOS 5.0 or higher, up to seven SCSI fixed disk drives canbe connected to the 1

Novell NetWareNetWare 4.x includes the Adaptec I/O Operating Environmentand does not require additional software.To load software for Novell NetWare 2

GlossaryAdapter CommandA command transmitted to the host adapter using the CommandData Out Port and the Data In Port. The commands are sequenced usin

rate and independence of external timing constraints, includingcable length and circuit response times.Asynchronous Event NotificationA process by whi

Common Command SetA de facto standard SCSI command set for communication withfixed disk drives. The Common Command Set (CCS) is the basisfor the SCSI-

Reconnect is the function that occurs when a target selects an initiator to continue an operation after a disconnect.EEPROMElectrically-Erasable Progr

Host AdapterA hardware printed circuit board that installs in a standard microcomputer backplane and provides a SCSI bus connection sothat SCSI device

Mailbox InAn area in main memory assigned by the host microcomputer soft-ware for communication with the host adapter. The host adapterplaces status a

RAMRandom Access Memory. Memory of which any byte can be accessed directly in a single memory cycle. Information can beread from and written to the me

Standard ModeThe operation mode that allows software written for the AHA-1540/1640 family to be fully compatible with the AHA-1740A/1742A/1744. The li

IndexAActive terminator 1-2Address priority 3-8ADL programexiting 5-9adl.exe 1-1, 1-3, 3-9, 5-1AMI configuration utility 3-1ASW-C174

Disk drivesstandard 3-9DMASee Direct Memory AccessDMA channel selection 3-7Download utility 1-4, 5-1See adl.exeDownload utility programs 5

II/O ports addresses 3-6Installation errors 7-3IRQ selection 3-4JJumpers 1-3, 2-2, 2-4LLED indication 7-1Low-level formatting 1-3, 3

RReliability information 1-7Removable drives 3-16SScatter/gather 1-2SCSIcompatibility 1-2terminators 2-3SCSI bus reset 3-10SCSI devi

Table of ContentsPreface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixConventions. . . . . . . . . . . . . .

Standard Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13Enable Parity Checking . . . . . . . . . . . . . . . . . . . . .

Chapter SevenTroubleshootingDetermining Problems Using the LED . . . . . . . . . . . . . . . 7-1Problems Detected During Installation . . . . . . .