AHA-1740A/1742A/1744
EISA-to-Fast SCSI
Host Adapter
User’s Manual
AHA-1740A/1742A/1744
EISA-to-Fast SCSI
Host Adapter
User’s Manual
Copyright
© Copyright 1992 Adaptec, Inc. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system, or transmitted in any form or by any means;
electronic, mechanical, photocopying, recording or otherwise, without the prior written
consent of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035.
Trademarks
AMI is a registered trademark of American Megatrends, Inc.
ASPI is a trademark of Adaptec, Inc.
IBM PC-AT and OS/2 are registered trademarks of International Business Machines
Corporation.
MCS is a registered trademark of Intel Corporation.
Microsoft, MS-DOS, and XENIX are registered trademarks and Windows is a trade-
mark of Microsoft Corporation.
Novell and NetWare are registered trademarks of Novell, Inc.
Phoenix is a registered trademark of Phoenix Technologies, Inc.
SCO is a registered trademark of The Santa Cruz Operations, Inc.
SunSoft Interactive Unix is a registered trademark of SunSoft, Inc.
UNIX is a registered trademark of AT&T Bell Laboratories.
USL Unix is a registered trademark of Unix Systems Laboratories, Inc.
Changes
The material in this manual is for information only and is subject to change without
notice.
Adaptec reserves the right to make changes in the product design without reservation
and without notification to its users.
Literature
The Adaptec Literature Department can be reached at 1-800-934-2766.
Additional information may be obtained from:
Adaptec, Inc.
Literature Department - M/S 40
691 South Milpitas Blvd.
Milpitas, CA 95035
ii
Technical Support
There are several ways to get technical assistance for your Adaptec product(s). Each is
described below. When requesting assistance, be sure that you have the following items
available (or if you write or FAX, send them along):
• the model of any Adaptec hardware product(s) you have.
• the model and version number of any Adaptec software product(s) you are
using.
• the type and version number of operating system you are using.
• the place at which you purchased your Adaptec product.
If you received your Adaptec host adapter as original equipment in a computer system,
first contact that computer manufacturer for technical assistance.
If you are an OEM, contact your local Adaptec sales office.
If you wish to contact Adaptec by telephone directly, our technical support phone num-
ber is: (408) 945-2550.
Outside of the U.S. and Canada, contact your local authorized Adaptec distributor.
The Adaptec electronic Bulletin Board Service (BBS) is available 24 hours a day at
(408) 945-7727. You can connect at 1200, 2400 or 9600 baud, using 8 bits, 1 stop bit and
no parity. Questions may be posted to the system operator (sysop). In addition, user
manuals, util ity programs, and other information are also available through the BBS.
You can write to Adaptec at:
Adaptec, Inc.
Technical Support
691 South Milpitas Blvd.
Milpitas, CA 95035
If you would prefer to contact us by FAX, our number is (408) 262-2533.
iii
Table of Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Con v entio n s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Chapter One
Overview
Gen eral Pr o duct I nfor m a tion . . . . . . . . . . . . . . . . . . . . . . 1-1
Installation Software . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
BIOS Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
System Caching Descrip tio n . . . . . . . . . . . . . . . . . . . . . . . 1-6
Product Specific ation s . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Associated Documen tation . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Chapter Two
Hardware Installation
Unp acking an d Insp ectio n . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
SCSI Terminator s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
SCSI Pari t y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
SCSI ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Physical Installation in the System . . . . . . . . . . . . . . . . . 2-5
Chapter Three
Using the Configuration Utility
EISA Configuration Utility . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Host Adapter Interfac e Mode . . . . . . . . . . . . . . . . . . . 3-4
I/O Port Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
DMA Chann el Defin ition . . . . . . . . . . . . . . . . . . . . . . . 3-7
Host Adapter BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Host Adapter SCSI ID . . . . . . . . . . . . . . . . . . . . . . . . 3-10
SCSI Bus Reset at Power-on . . . . . . . . . . . . . . . . . . . 3-10
Adv ance d En han ced Mode BI O S Options. . . . . . . . . 3- 1 1
SCSI Device Configur ation . . . . . . . . . . . . . . . . . . . . 3-12
v
adaptec AHA-1740A/1742A/1744
Standard Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Enable Parity Check ing . . . . . . . . . . . . . . . . . . . . . . 3-13
Initiate Synch Negotiation . . . . . . . . . . . . . . . . . . . . 3-14
Enable Disconne ction . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Enhanc ed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Error if Device Not Found . . . . . . . . . . . . . . . . . . . . . 3-15
BIOS Support Option . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Send Start Command . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Enable Parity Check ing . . . . . . . . . . . . . . . . . . . . . . 3-17
Initiate Synch Negotiation . . . . . . . . . . . . . . . . . . . . 3-17
Enable Disconne ction . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Maximum Synch Xfer Rate . . . . . . . . . . . . . . . . . . . . 3-19
Chapter Four
Multiple Host Adapter Support
Standard Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Enhanc ed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Stan d ard and Enhan ced Modes . . . . . . . . . . . . . . . . . . . . . 4-2
Chapter Five
Adaptec Download Utility
Runnin g th e AD L Progr a m . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Download Firmw ar e . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Firmware Information . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Low- Leve l F orma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Exi ting th e A DL Prog ram . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Chapter Six
Host Adapter BIOS Operation
Standard Mode O per ation . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Enhanced M ode O per ation . . . . . . . . . . . . . . . . . . . . . . . . 6-3
vi
EISA-to- Fast SCSI Ho st Adapt er
Chapter Seven
Troubleshooting
Determining Problems Using the LED . . . . . . . . . . . . . . . 7-1
Problems Detected During Installation . . . . . . . . . . . . . . 7-2
Problems Booting the System from a SCSI Drive . . . . . . 7-4
Problems Using a SCSI and a Standard Disk Drive . . . . 7-4
Problems Using Two SCSI Drives . . . . . . . . . . . . . . . . . . . 7-5
Appendix A
Disk Drives Over 1 Gigabyte
Extended Translation (Using DOS 5) . . . . . . . . . . . . . . . A-1
The DOS 1 Gigabyte Limit . . . . . . . . . . . . . . . . . . . . . . . A-1
When to Use Extended Translation . . . . . . . . . . . . . . . . A-2
With DOS Version 5 Only . . . . . . . . . . . . . . . . . . . . . A-2
Drives With Mixed Partition s . . . . . . . . . . . . . . . . . . A-2
Using Extended Translation . . . . . . . . . . . . . . . . . . . A-2
Using Fdisk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Load ASW-1410 v3.0a . . . . . . . . . . . . . . . . . . . . . . . . A-3
Questions and Answers About Exten de d Translation . . A-3
Table of Contents
Appendix B
Loading the I/O Operating Environmen t Software
DOS/Window s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Novell NetWare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
OS/2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Unix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Glossary
Index
vii
adaptec AHA-1740A/1742A/1744
List of Figures
Figure 2-1. SCSI Device Termination . . . . . . . . . . . . . . . . . . 2-3
Figure 3-1. System Configuration Overview . . . . . . . . . . . . . 3-2
Figure 3-2. System Configuration Detailed View . . . . . . . . . 3-3
Figure 3-3. Change Resources Screen . . . . . . . . . . . . . . . . . . 3-5
Figure 3-4. SCSI Configuration Optio ns . . . . . . . . . . . . . . . 3-12
Figure 3-5. Global Configura tion Options . . . . . . . . . . . . . . 3-13
Figure 3-6. SCSI Device Configuration Settings . . . . . . . . 3-15
Figure 5-1. Host Adapter Listing . . . . . . . . . . . . . . . . . . . . . . 5-2
Figure 5-2. ADL Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Figure 5-3. Download Firmware Screen . . . . . . . . . . . . . . . . 5-4
Figure 5-4. Download Warning Mes sage Screen . . . . . . . . . 5-5
Figure 5-5. Enhanced Mo de Fir mware In formation . . . . . . . 5-6
Figure 5-6. Low-Level Format Devic e Selection Screen . . . . 5-7
Figure 5-7. Low-Level Format Optio n Selection Screen . . . 5-8
Figure 5-8. Exiting the ADL Program . . . . . . . . . . . . . . . . . . 5-9
Figure 6-1. Standard BIOS Boot Message . . . . . . . . . . . . . . 6-1
Figure 6-2. Enhanced BIOS Boot Message . . . . . . . . . . . . . . 6-3
Figure 6-3. Boot Message with Error Detection Enabled . . 6-4
List of Tables
Table 1-1. AHA 1740A/1742A/1744 Program Files . . . . . . . . 1-4
Table 1-2. AHA 1740A/1742A/1744 Operation Modes . . . . . . 1-5
Table 1-3. AHA-1740A/1742A/1744 Product Specifications . 1-7
Table 3-1. BIOS Installation Limitations . . . . . . . . . . . . . . . . 3-9
Table 7-1. AHA 1740A/1742A/1744 LED Flash Codes . . . . . 7-2
viii
Preface
This User Guide provides infor mation relating to the operation
of the Adaptec AHA-1740A/1742A/1744 EISA-to-Fast SCSI
Host Adapter in an EISA (Extended Industr y Standard Ar chitecture) system.
Chapter On e, Overview, provides gene ral in formation and a
list of files provided for configuration.
Chapter Two, Hardwa re Installati on , describe s the installa-
tion of the AHA-1740A/1742A/1744 host adapter in your EISA
system.
Chapter Thr ee, Using the Con fig u ra tio n Utilit y , contains
information on configuring the host adapter with a configuration utility.
Chapter Fou r, Mult iple Host Adapt er Su pport, explains how
more than one host adapter can be used in an EISA system.
Chapter Fiv e, Adaptec Download Utility, explains firmware
download procedur e, which i s available for the AHA-1740 and
AHA-1744 only.
Chapter Si x, Host Adapter BIOS Operation, explains the
standard and enhan c ed BIO S operation modes.
Chapter Sev en , Tr ou ble s hooti ng , offers information relating
to the LED functioning and possible problem occur ren ces during host adapter operation .
Appendi x A, Disk Driv e s Ove r 1 Giga byte , contains configura-
tion information relating to disk drives wi th a capacity of mor e
than
1 Gigabyt e.
Appendi x B, Loading the I/O Operating Environment Soft-
ware, contains a description of software used to connect mor e
than two fixed disk driv es.
ix
Conventions
The following typog raph ic c on ventions are used throu ghou t
this Installat ion Gu id e.
bold
Used for keystrokes (.. press the Enter key ..) and screen selection fields (.. select Backup Device and ..).
Helvetica
Used for operator entry that must be typed exac tly as shown
( .. device=c:\cdrom\cdrom .tsd ..) and for screen messages (.. En-
ter Password ..).
Helvetica Italics
Used as a place holder for text you must determine and type in
nn
(.. ente r
in body text (.. the
Italics
Used for emphasis (.. is only supported ..) and docu ment reference (.. refer to Chapter 2, Installation ..).
ALL CAPITALS
Used for acronyms, such as SCSI.
for number ..). Also used for program and file names
autoexec.bat
file ..).
Hexadecimal Numbers
Are followed by an ’h’ , e.g., 330h.
End Mark
The ❐ symbol marks the end of text for each chapter.
❐
x
Printed in Singapore
691 south milpitas blvd. • milpitas, ca 95035 •(408)945-8600
STOCK NO.: 510215-00
Rev B
LL 8/93
Chapter One
Overview
This User Guide provides software installation information for
the Adaptec AHA-1740A, 1742A, and the 1744 EISA-to-fast-SCSI
bus master host adapters. Cumulatively the cards are referred to
as AHA-1740A/1742A/1744 in this guide. The Adaptec
download utility and the
packages are described, as well as available software support.
ASW-C174
and
ASW-M174
General Product Information
The AHA-1740A/1742A/1744 provides a high performance connec tion between the EISA (Extended Ind ustr y Standar d Ar chitec ture) bus and the SCSI (Small Computer System Interfac e) bus.
The AHA-1740A/1742A are single-ended SCSI host adapters that
support single-ended disk drives. Single-ended host adapters and
devices can suppo rt cable lengths of up to 6 meters (about 18
feet). Most of the SCSI drives on the market today are of this
type. The AHA-1744 Host Adapter is a differential SCSI host
adapter that supports differen tial type S CSI devices. The use of
differential SCSI drives and adapters allows the SCSI cable
length to be up to 25 meters in length (about 75 feet). Other than
this basic difference, and other slight differe nces discu ssed in this
document, the AHA-1740A/1742A/1744 are installed and operate
identically.
adl.exe
software
The AHA-1740A/1742A/1744 is a bus master device and transfers
data into host memory at burst rates of 33 MBytes/sec. These
transfers are gener ally 32 bits wide, unless transfer ring data into
8- or 16-bit memory. This form of transfer is known as bus master DMA (Direct Memory Access). Bus mastering minimizes host
CPU overhead, since the AHA-1740A/1742A/ 1744 has an on board
processor to transfer data direc tly to memor y. This is the highest
performanc e type of data transfer available for the EISA bus in
multitasking operating systems.
1-1
adaptec AHA-1740A/1742A/1744
The AHA-1740A/1742A/1744 supports asynchro nous, synchr onous, and Fast SCSI data transfers on the SCSI bus. Asynchronous data transfers support up to 2 MBytes/sec, synchronous
transfers suppo rt up to 5 MBytes/sec , and Fast synchr on ous transfers support up to 10 MBytes/sec . Devic es using diffe rent tran s fer rates can all be used on the same SCSI cable. The
AHA-1740A/1742A/1744 is both SCSI-1 and SCSI-2 compatible,
and supports both SCSI-1 and SCSI-2 devices.
The AHA-1740A/1742A/1744 fully supports the SCSI feature s of
disconnect/reconnect, zero latency reads, and tagge d q u euin g . Disconnect/reconnect support maximizes SCSI bus utilization for
multiple target systems. Zero latency reads and tagg ed queuin g
minimizes the mechanical limitations of SCSI fixed disk drives.
The AHA-1740A/1742A/1744 has an on board BIOS that allows it
to be used in addition to, or in place of, a standard fixed disk controller. Thus, up to two SCSI fixed disk driv es can be used under
DOS without the use of dev ic e driv er s. Up to seven SC SI fixed
disk drives can be use d with ou t a driv er if MS-D O S 5.0 or hig h er
is used. Booting is also supported by the BIOS in the DOS environment.
The AHA-1740A/1742A/1744 fully supports sc atter/gather, a fea-
ture utilized by device drivers to minimizes the number of I/O
commands into memory. The UNIX
®
/XENIX® and NetWare® op-
erating environments take advantage of this feature.
The AHA-1740A/1742A/1744 has two modes of operation: stand-
ard mode and enhanced mode. The standard mode is software
compatible with the AHA-1540 series host adapter drivers. The
enhanced mode uses an adv anced, high performance mailbox
interface and features full EISA 32-bit addressing. The
AHA-1740A/1742A/1744 in enhanced mode can support up to
4 Gigabytes of host RAM memory, while standard mode is limited
to 16 MBytes of host RAM. The operation mode of the
AHA-1740A/1742A/1744 is selected by running the EISA Configuration utility program provided with every EISA machine. The
modes of operation are fully described in Chapter 6, Host Adapter
BIOS Operat ion .
1-2
EISA-to- Fast SCSI Ho st Adapt er Overview
The AHA-1744 microcode is stored in an EEPROM. This allows
the microcode to be changed with the Adap tec
adl.exe
The
of the currently installed microcode and low-lev el for mat SCSI
fixed disks. Both the standard and en han ced mode micr ocode c an
reside in the EEPROM at the same time.
The AHA-1740A/1742A uses an EPROM for the microcode, which
does not allow the microcode to be changed. Howeve r, the
program can still be used to low-level for mat fixe d di sk drives.
The AHA-1740A/1742A/1744, like all EISA I/O cards, do not have
jumpers to change various configuration options. These options
are changed via the EISA Configuration utility provided with
every EISA system. The AHA-1740A/1742A/1744 does have a
jumper that is used to determine whether or not the host adapter
will supply terminator powe r to the SCSI bus. In addition, the
AHA-1742A has a jumper that is used to enable or disable the
on-board floppy contro ller .
The AHA-1740A/1742A/1744 can be used to install up to 7 SCSI
devices. Up to 56 devices can be installed if bridge controlle rs are
used; however, this is not usually done.
program can also be used to determine the checksu m
adl.exe
program.
adl.exe
The AHA-1740A/1742A/1744 supports processor target mode,
which allows the host adapter to be an initiator and a target. The
use of processor target mode is fully doc u men ted in the AHA-
1740A/1742A/1744 Technical Reference Manual.
1-3
adaptec AHA-1740A/1742A/1744
Installation Software
Software required to install the AHA-1740A/1742A/1744, in an
EISA system, is provided in the ASW-C174 software package.
The files consist of:
Table 1-1. AHA 1740A/1 742A /1744 Pro gram Files
File Name File Description
!adp0000.cfg EISA configuration file for the AHA-1740A/1742A/1744
!adp0001.cfg EISA configuration file for the AHA-1740A
!adp0002.cfg EISA configuration file for the AHA-1742A
!adp0400.cfg EISA configuration file for the AHA-1744
adp0000.ovl Configuration overlay file
adp0000.ovr Configuration overlay file (for use with the AMI EISA
adl.exe Adaptec download utility
standard.hex Standard mode microcode (AHA-1744 only)
enhanced.hex Enhanced mode microcode (AHA-1744 only)
sys$err.dta Support files for adl.exe
sys$help.dta Support files for adl.exe
sys$msg.dta Support files for adl.exe
firmhlp.hlp Support files for adl.exe
configuration utility)
The ASW-M174 includ es only the standard and enhan ced mode
firmware, and is used to upgrade the firmwar e for the AHA-1744
if required.
Also required to install the AHA-1740A/1742A/1744 is an EISA
Configuration utility . This utility is provided by the EISA system
manufactur er.
1-4
EISA-to- Fast SCSI Ho st Adapt er Overview
BIOS Operation Modes
The AHA-1740A/1742A/1744 has two modes of operation: standard mode and enhanced mode. The standard mode is software
compatible with the AHA-1540 series host adapter drivers. The
enhanced mode uses an adv anced, high performance mailbox
interface and features full EISA 32-bit addressing. The
AHA-1740A/1742A/1744, in enhanced mode, can support up
to 4 Gigabytes of host RAM memory. The two modes of the
AHA-1740A/1742A/1744 are selected by running the EISA Configuration utility provided with every EISA machine. In general,
the enhanced mode of the AHA-1740A/1742A/1744 should be
used, whenever possible, for maximum per fo rmanc e.
The two operation modes are described in the table below.
Table 1-2. AHA 1740A /17 42A /17 44 Ope ratio n Mo des
Standard Mode
(ISA compatible mode)
32-bit host transfers at 33 MBytes/sec. 32-bit host transfers at 33 MBytes/sec.
Addresses up to 16 MBytes host RAM. Addresses up to 4 Gigabytes host RAM.
AHA-1540 series mailbox structure
(compatible with AHA-1540 software).
Supports Fast SCSI devices up to
5 MBytes/sec.
Boot only from SCSI ID 0. Boot from any SCSI ID.
Drives spin up only at power-on. Drives spin up at power-on, or from
Disconnect/reconnect, parity checking,
and synchronous negotiation enable or
disabled for all SCSI targets.
Up to four host adapters can be installed in the system.
BIOS support for drives up to 1 Gigabyte in capacity under MS-DOS.
BIOS support for a maximum of 2
SCSI drives.
Enhanced Mode
(enhanced mailbox interface)
New high performance mailbox
structure.
Supports Fast SCSI devices up to
10 MBytes/sec.
SCSI Start Unit command.
These parameters can be enabled or
disabled on a per target basis.
Up to twelve host adapters can be
installed in the system.
BIOS support for drives up to 8
Gigabytes in capacity under MS-DOS
5.0 or higher.
BIOS support for up to 7 SCSI drives
(using MS-DOS 5.0 or higher).
1-5
adaptec AHA-1740A/1742A/1744
System Caching Description
The AHA-1740A/1742A/1744 fully supports opera ting systems
caching to maximize overall system perfor man ce. Having RAM
on the host adapter can actually decr ease over all system perfo rmance while adding cost. Operating systems such as Novell
Ware, OS/2
cache and caching the same data in the operating system and on
the host adapter can bog down system performance.
Overall system performan ce is increased by incre asing the size of
the operating system cache (i.e. add more RAM to the system
motherboard), and by utilizing the advanced multithreading features of SCSI to minimize the mechanical limitations of SCSI
peripherals (such as disk seek times by using zero latency reads).
®
, UNIX, XENIX, DOS and Windows have built-in
®
Net-
1-6
EISA-to- Fast SCSI Ho st Adapt er Overview
Product Specifications
The following table lists some of the physical product descr iption s
relating to the AHA-1740A/1742A/1744 Host Adapter s.
Table 1-3. AHA -174 0A/ 174 2A/ 174 4 Pro duct Speci fi cat io ns
Physical Dimensions
Length 13-3/8 inches
Width 5/8 inch
Height 5 inches
Standard EISA-compatible form factor
Power Requirements
+ 5.0 +/- 0.25 Volts at 2.9 Amps (maximum)
Environmental Requirements
Temperature -40° - 75° C (operating or storage)
Reliability Information
Mean Time Between Failures (MTBF): 100,000 hours
(calculated per Mil Handbook 217E, ground benign, 40 C)
Mean Time Between Failures (MTBF): (calculated)
1740A 60,462 hours
1742A 57,600 hours
1744 54,856 hours
Mean Time To Repair (MTTR): 30 minutes
1-7
Loading...