2. Port addresses and BIOS addresses for the host
adapter may be viewed with the SCSISelect utility and changed with the switch block on the
adapter board.
Data Miscompare Error
If your computer displays Data Miscompare errors:
1. Check all your external SCSI cable connections;
make sure termination is correctly implemented
(see Section 3 ).
2. If you have used SCSISelect to change the Enable
Sync Negotiation option settings to Yes, use
only high quality SCSI cables to create your
SCSI bus. This is especially important if you
have installed multiple external SCSI devices.
7
Switch Block Settings
Settings controlled by the switch block on the upper left-hand corner of the host adapter board are
as follows:
sw1
On
Termination Installed
Off
Software Controlled*
sw2 sw3 sw4 I/O Port
sw5
On
Disable Floppy✢
Off
Enable Floppy*
sw6 sw7 sw8 BIOS Address
•
•
•
NOTE: 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 residential installations. This equipment generates, uses, and can radiate
radio frequency energy, and if not installed and used in accordance with the 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 interference to radio or television
equipment 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
Move the equipment away from the receiver
Plug the equipment into an outlet on a circuit different from
that to which the receiver is powered
If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions
Off
D8000h
D4000h
CAUTION: Only equipment certified to comply with Class B
(computer input/output devices, terminals, printers, etc.)
should be attached to this equipment, and must have shielded
interface cables.
Off
On
Off
Off
334–337h
On
Off
Off
On
Off
230–233h
Off
On
D0000h
Off
On
On
Off
234–237h
On
On
Off
Off
Off
On
130–133h
Off
Off
On
CC000h
On
Off
On
134–137h
On
Off
On
C8000h
Off
On
On
Reserved
Off
On
On
Reserved
On
On
On
Reserved
On
On
On
BIOS Disable
Off = Open
*
Standard setting: Standard settings on your host
adapter may be different; Adaptec custom configures
for proprietary customers and resellers.
✢
Standard on AHA-1540CF.
A table and text explaining host adapter termination can be found in Sections 2 and 3 .
Note
If switch sw1 is switched to On (or Closed), host adapter
termination will always be enabled regardless of the setting in the SCSISelect utility.
Installation Guide
FCC Compliance Statement
Off
330–333h*
10
•
The Adaptec Electronic Bulletin Board Service (BBS):
information on upgrades, new releases, advice, and more. The
BBS can be reached at: (408) 945-7727, 1200/2400/9600/14400
baud, 8 data bits, 1 stop bit, no parity.
The Adaptec Technical Support Hot Line can be reached at
(800) 959-SCSI (7274), or (408) 945-2550.
The Adaptec Interactive FAX line (408) 945-6776.
Adaptec Software Sales (800) 442-SCSI (7274).
Additional documentation for Adaptec products can be requested by calling (800) 934-2766.
•
Off
Off
•
Adaptec Customer Support
DC000h*
Off
Off
8
Finally, any change or modifications to the equipment by the
user not expressly approved by the grantee or manufacturer
could void the user’s authority to operate such equipment.
Each AHA-1540CF/1542CF is equipped with an FCC compliance label which shows only the FCC Identification number.
The full text of the associated label follows:
AHA-1540CF/1542CF
This device complies with part 15 of the FCC rules. Operation
is subject to the following two conditions: (1) this device may
not cause harmful interference and (2) this device must accept
any interference received, including interference that may
cause undesired operation.
High-Performance Bus Master
ISA-to-SCSI Host Adapter
with SCSISelect
691 South Milpitas Blvd., Milpitas, California 95035
Copyright © 1993,1994 Adaptec, Inc. All rights reserved.
Adaptec and the Adaptec logo are registered trademarks,
and AHA and SCSISelect are trademarks of Adaptec, Inc.
Printed in Singapore
Stock No.: 510382-00 Rev. B CL 6/94
Information subject to change without notice.
11
R
1
Getting Started
2
not connecting floppies to an AHA-1542CF host
adapter floppy connector.)
Installing the Host Adapter
Board Installation
•
Multiple Host Adapters
Installation Of Your Host Adapter Includes:
1. Turn OFF and disconnect power to the system
and external equipment. Follow your ISA (or
EISA) personal computer’s instruction manual
to remove the system cover and expose the
expansion slots and external access covers.
1. Installing the AHA (Adaptec Host Adapter) board
in your computer
2. Locate an unused expansion slot. Any standard
ISA or EISA expansion slot will work.
2. Installing your SCSI cable(s) and SCSI peripherals
3. Remove the corresponding expansion board
access cover on the computer chassis.
This guide provides the steps required for basic installation of the AHA-1540CF and AHA-1542CF
ISA-to-SCSI Host Adapters. Procedures are the
same for both adapters except when regarding the
AHA-1542CF on-board floppy controller.
3. Terminating the SCSI cabling bus
4. Using the built-in SCSISelect utility to adjust
host adapter configuration settings if necessary
5. Loading software if necessary
Caution
Turn OFF and disconnect power to the system and external equipment. Always refer to your personal computer’s
documentation for instructions on opening the system
cover and adding option boards.
You May Not Need To Change Your Host
Adapter Settings
Your host adapter is already configured for the majority of ISA (AT compatible) or EISA class computers. Read Sections 2 , 3 and 4 to determine
whether to alter the adapter’s default settings.
•
A table identifying the adapter board switch
block settings can be found in Section 7 at the
end of this Installation Guide.
You May Not Need To Load Any Software
Your host adapter comes equipped with an onboard BIOS that allows you to use up to seven
SCSI disk drives without additional software under
MS-DOS® version 5.0 and above. Refer to Section 5
for your specific software requirements.
For those installing Floptical® drives, Adaptec supplies special utility programs to provide functions
not provided by DOS and Windows. Refer to Section 5 for more information.
4. Align and insert the ISA I/O bus connector on the
bottom of the AHA-1540CF/1542CF into the
chosen slot. Use the screw from the removed
expansion slot cover to secure the AHA-1540CF/
1542CF bracket to your ISA system chassis.
•
Select a different I/O port address for each host
adapter installed. You must know the port address of each installed host adapter in order to
adjust it’s settings with the SCSISelect utility.
Make sure that each host adapter is set to a
separate BIOS address. Or, disable the BIOS on
all but one of the host adapters.
Not Controlling SCSI Disk Drives
•
5. Do not replace the system cover or reconnect
power yet!
If you do not want to use the host adapter to control hard disk drives, disabling the BIOS may
save up to 60 seconds of boot-up time. This
would be useful when running only SCSI tape or
CD-ROMs, for example.
When to Set the Switches
In most cases, you will never have to change the
switch block settings. There are, however, certain
options which do require adjustment to the switch
block on the adapter board.
The switch block is on the upper left-hand corner of
the host adapter board.
•
A table identifying the switch block settings can
be found in Section 7 at the end of this Installation Guide.
Here are some cases in which the switch block settings should be changed:
Controlling Floppy Drives
•
•
If your floppy diskette drives are already running under another controller, use the switch to
disable the AHA-1542CF floppy controller.
If you want to use the AHA-1542CF floppy controller you must disable your existing one; refer
to your computer or floppy controller user documentation.
(You do not need to disable the existing PC
floppy controller if you only plan to use Floptical
drives connected to the SCSI bus cable, and are
1
•
SW5 on the AHA-1540CF must remain in the
On/Closed position, even though there is no
floppy controller on that host adapter.
2
3
Connecting Peripherals
Setting SCSI IDs
Each SCSI device connected to a host adapter must
be set to a separate SCSI ID.
Your SCSI peripheral manufacturer’s instructions
should contain directions on how to check and adjust the SCSI IDs of those devices.
1. Make sure each device to be connected to the host
adapter is set to a separate SCSI ID.
2. The AHA-1540CF/1542CF is set to ID 7 by
default. This can easily be changed with the
SCSISelect utility, as described in Section 4 .
3. Your first two SCSI hard disk drives are best set
to SCSI ID 0 and ID 1.
Connecting Cables
SCSI devices are cabled together in a single continuous daisy-chain of devices, called the SCSI bus.
The bus may have no branches, and must run from
device-to-device in a continuous series. The host
adapter need not be at the end of the SCSI bus, unless only one other device is on the bus.
3
•
Only Single-Ended SCSI devices are supported
by the AHA-1540CF/1542CF. Differential SCSI
devices may be damaged if connected to the
AHA-1540CF/1542CF bus. Consult your SCSI
peripheral user documentation.
If your system configuration includes both internal
and external SCSI devices, the host adapter will be
at the junction between the internal and external
peripherals.
1. Lay out your cables and find the pin-1 element of
each cable and peripheral connector. On internal cables, pin 1 is usually distinguished by a
contrasting color on one edge of the ribbon cable.
External cable connectors can only be plugged-in
one way, so pin-1 orientation is automatic.
2. Attach the SCSI cable(s) to the host adapter and
the peripherals, using either the internal and/or
external connector(s).
3. Make sure that pin-1 orientation is maintained
throughout the bus. The AHA-1540CF/1542CF
uses a 50-pin Centronics style external connector, and a standard 50-pin internal connector.
How to Terminate Your SCSI Bus Cable
What is termination?
The first and last physical SCSI devices on the
ends of the SCSI bus must have a set of resistors
called terminators. All other SCSI devices must
have terminators removed/disabled.
The AHA-1540CF/1542CF and most SCSI peripherals come equipped with built-in terminators that
can be enabled or disabled. Exactly two devices
must be terminated on the SCSI bus, one at each end.
Devices Connected To Host Adapter:
AHA Termination
Internal devices only (AHA at end of cable):
On/Enabled
External devices only (AHA at end of cable):
On/Enabled
Internal and External Devices (AHA in between): Off/Disabled
If you need to disable termination on the
AHA-1540CF/1542CF, do the following:
1. Complete this physical installation section.
2. Disable Host Adapter SCSI Termination by following the instructions in Section 4 , Configuring the Host Adapter.
Terminating Other SCSI Peripherals
1. Check the manufacturer’s literature to determine
how to enable or disable SCSI bus termination
on your SCSI peripheral device(s).
3. Make sure that termination is disabled/disconnected on devices in between those at the ends
of the SCSI bus.
4. Check SCSI cable connections, they may have
been loosened if terminating your peripherals
involved physically manipulating them.
Reassembling the System
Follow your personal computer and SCSI peripheral installation manual instructions to:
1. Replace the system cover.
2. Make sure all power switches are in the OFF position, then connect system and peripheral power
cables.
Starting the System
The factory installed bus terminators on the AHA1540CF/1542CF are enabled by default. Host adapter termination should be disabled if you attach
SCSI devices to both internal and external connectors, since the host adapter would then be in the
middle of the SCSI bus.
After you have completed installing and connecting
the host adapter:
4
Configuring the Host Adapter
Your host adapter includes a built-in, menu-driven
SCSISelect program. SCSISelect allows you to
change most of the option settings of the host
adapter without opening the case of your computer
or handling the board.
You may never need to reconfigure the host adapter. If you do, however, the following instructions
tell you how to access the program.
Use SCSISelect to:
•
•
2. Install/enable termination on SCSI devices on the
ends of the SCSI bus (cable).
Terminating the Host Adapter
The following table describes the three possible
SCSI device and host adapter (AHA) configurations. Host adapter termination should be adjusted
to suit.
4
•
Change software controlled host adapter options, such as interrupt channel.
Install new SCSI devices; you may need to lowlevel format their media, or change host adapter
termination; to enable Floptical or Fast SCSI
support.
Run Host Adapter Diagnostics.
Running SCSISelect
There are several ways to run the SCSISelect
utility:
•
•
Press Ctrl-A when prompted at boot time.
Using DOS DEBUG: -g=xxxx:6
where xxxx = host adapter BIOS address in Hex;
DC00:6 is a typical example.
Pressing F6 while in the SCSISelect Configure/View Host Adapter Settings menus resets the
host adapter to the original settings. From any
menu, press Esc to return to the previous menu. Use
the arrow (↑↓) and Enter keys to make selections.
Host Adapter Selection
1. Turn on peripheral and personal computer system power.
2. The host adapter BIOS sign-on message will
appear on your computer display. The sign-on
includes a listing of installed SCSI devices and
should end with a BIOS status message.
The Host Adapter Port Address screen is the first
screen to appear in the SCSISelect utility.
1. Select the Port Address of the adapter to be reconfigured. You may reconfigure any installed AHA1540CF/1542CF. (Refer to Multiple Host
Adapters, in Section 2 .)
2. Press Enter to select the address and automatically move to the main menu screen.
3. In most cases your personal computer, host adapter, and SCSI peripherals are now ready to use.
5
6
Main Menu Options
5
Loading the I/O
Operating Environment Software
Configure/View Host Adapter Settings
Configuration Screen: Selecting Configure/View Host
Adapter Settings gives you access to the basic soft-
DOS/Windows
ware configurable options. These options are used
to reconcile I/O conflicts, change transfer rates, and
set Host Adapter Termination. The host adapter
BIOS Base Address is also displayed.
Under MS®-DOS 5.0 or higher, up to seven SCSI
hard disk drives can be connected to the AHA1540CF/1542CF without additional software. (Older
versions of DOS support up to two hard disk drives.)
SCSI Device Configuration and Advanced Configuration Options: These screens are accessed from the
The host adapter treats removable media drives as
hard disk drives provided you enable Treat Removable Disks Under BIOS as Fixed Disks in Advanced Configuration Options, and do not remove the media
while your computer system power is on.
Configuration screen described above. The AHA1540CF/1542CF offers a number of options for advanced applications. Fast SCSI, Floptical support,
and an alternate floppy controller address are enabled here.
Note
To protect you from data loss, the host adapter will suspend operation if it detects old software. Certain advanced
features are incompatible with early SCSI driver software
versions.
SCSI Disk Utilities
Select SCSI Disk Utilities from the main options
menu. SCSI IDs 0 through 7 are then displayed,
showing SCSI devices installed at each address, including non-disk devices. Selecting one of the installed devices causes the utilities menu to appear.
Format Disk accesses the Adaptec SCSI Low-Level
Format utility. Most SCSI devices are pre-formatted, and do not need re-formatting.
Verify Disk Media scans the selected device’s media
Additional software is required if you desire to do
the following:
•
•
•
•
Remove and insert CD-ROM, removable hard
disks, and other large media cartridges while
your computer is running.
Support more than two hard disk drives under
versions of DOS prior to MS-DOS 5.0.
Use devices other than hard disk drives such as
SCSI tape, CD-ROM, scanners, etc.
Use the Adaptec Floptical utility program to format high-density floptical diskettes.
Note
Floptical drives are only supported under DOS and Windows at the time of this document’s publication.
Novell NetWare
for defects. If bad blocks are encountered, a prompt
will ask if you want the block re-assigned; if you select Yes, that block will no longer be used.
NetWare® 4.x includes the Adaptec I/O Operating Environment and does not require additional software.
Host Adapter Diagnostics
•
Not all ISA class systems are 100% IBM compatible and may not properly support bus master
DMA transfers, necessary for running multi-tasking OS/2®, Windows, UNIX®, and others.
Host Adapter Diagnostics will do a bus master DMA
test to memory. There should be no device drivers
or TSR (Terminate and Stay Resident) programs
loaded when the test is run. If the test fails, try
lowering the DMA transfer rate to a lower setting
from the Configure/View Host Adapter Settings menu.
7
To load software for Novell® NetWare 286 2.x
and 386 3.x, follow the instructions included in
the ASW-1440 software package.
OS/2
IBM® OS/2 2.0 and Microsoft® OS/2 1.30.1 include
the Adaptec I/O Operating Environment and do not
require additional software.
•
UNIX
Major versions of UNIX include the Adaptec I/O
Operating Environment and support the AHA1540CF/1542CF without additional software. Current versions of SCO® UNIX, USL UNIX, and
Sunsoft Interactive UNIX support the AHA1540CF/1542CF directly.
6
Troubleshooting
If Your Computer Will Not Boot From a SCSI Disk Drive
If both SCSI and non-SCSI disk drives are installed, then the non-SCSI disk drive is always the
boot device. If there is no non-SCSI disk drive:
1. Make sure your computer system’s CMOS Setup
is set to No Drives Installed, as is required for
SCSI host adapters.
2. Try enabling Dynamically Scan SCSI Bus for BIOS
Devices in the Advanced Configuration Options area
of the SCSISelect utility. See Section 4 .
3. Make sure the hard disk SCSI ID is set to ID 0.
The SCSI ID is normally set with jumpers or
switches on the drive. All SCSI devices should
be set to unique SCSI IDs, ranging from 0 to 7.
4. Make sure the SCSI termination is set correctly.
(See Section 3 , Connecting Peripherals, for information on SCSI termination.)
5. A low-level format of the SCSI hard disk may be
necessary. Be sure to backup first, then run the
Format utility through the SCSISelect utility.
Similar utilities for removable media devices are
included in Adaptec’s DOS I/O Operating Environment Software, or via the BBS. See Section 8 .
6. Make sure sw5 on the AHA-1540CF is in the
On/Closed position. It must remain in that position, even though there is no floppy controller on
that host adapter.
Conflicts With Other Option Cards
Your host adapter and all other devices may not
use or occupy overlapping memory and I/O
addresses. If you experience conflicts:
To use the AHA-1540CF/1542CF under MS or
IBM OS/2 1.3, follow the instructions in the
ASW-1220/1420 version 1.3 software product.
1. IRQ and DMA Channels may be altered with the
SCSISelect utility.
8
9
2. Port addresses and BIOS addresses for the host
adapter may be viewed with the SCSISelect utility and changed with the switch block on the
adapter board.
Data Miscompare Error
If your computer displays Data Miscompare errors:
1. Check all your external SCSI cable connections;
make sure termination is correctly implemented
(see Section 3 ).
2. If you have used SCSISelect to change the Enable
Sync Negotiation option settings to Yes, use
only high quality SCSI cables to create your
SCSI bus. This is especially important if you
have installed multiple external SCSI devices.
7
Switch Block Settings
Settings controlled by the switch block on the upper left-hand corner of the host adapter board are
as follows:
sw1
On
Termination Installed
Off
Software Controlled*
sw2 sw3 sw4 I/O Port
sw5
On
Disable Floppy✢
Off
Enable Floppy*
sw6 sw7 sw8 BIOS Address
•
•
•
NOTE: 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 residential installations. This equipment generates, uses, and can radiate
radio frequency energy, and if not installed and used in accordance with the 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 interference to radio or television
equipment 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
Move the equipment away from the receiver
Plug the equipment into an outlet on a circuit different from
that to which the receiver is powered
If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions
Off
D8000h
D4000h
CAUTION: Only equipment certified to comply with Class B
(computer input/output devices, terminals, printers, etc.)
should be attached to this equipment, and must have shielded
interface cables.
Off
On
Off
Off
334–337h
On
Off
Off
On
Off
230–233h
Off
On
D0000h
Off
On
On
Off
234–237h
On
On
Off
Off
Off
On
130–133h
Off
Off
On
CC000h
On
Off
On
134–137h
On
Off
On
C8000h
Off
On
On
Reserved
Off
On
On
Reserved
On
On
On
Reserved
On
On
On
BIOS Disable
Off = Open
*
Standard setting: Standard settings on your host
adapter may be different; Adaptec custom configures
for proprietary customers and resellers.
✢
Standard on AHA-1540CF.
A table and text explaining host adapter termination can be found in Sections 2 and 3 .
Note
If switch sw1 is switched to On (or Closed), host adapter
termination will always be enabled regardless of the setting in the SCSISelect utility.
Installation Guide
FCC Compliance Statement
Off
330–333h*
10
•
The Adaptec Electronic Bulletin Board Service (BBS):
information on upgrades, new releases, advice, and more. The
BBS can be reached at: (408) 945-7727, 1200/2400/9600/14400
baud, 8 data bits, 1 stop bit, no parity.
The Adaptec Technical Support Hot Line can be reached at
(800) 959-SCSI (7274), or (408) 945-2550.
The Adaptec Interactive FAX line (408) 945-6776.
Adaptec Software Sales (800) 442-SCSI (7274).
Additional documentation for Adaptec products can be requested by calling (800) 934-2766.
•
Off
Off
•
Adaptec Customer Support
DC000h*
Off
Off
8
Finally, any change or modifications to the equipment by the
user not expressly approved by the grantee or manufacturer
could void the user’s authority to operate such equipment.
Each AHA-1540CF/1542CF is equipped with an FCC compliance label which shows only the FCC Identification number.
The full text of the associated label follows:
AHA-1540CF/1542CF
This device complies with part 15 of the FCC rules. Operation
is subject to the following two conditions: (1) this device may
not cause harmful interference and (2) this device must accept
any interference received, including interference that may
cause undesired operation.
High-Performance Bus Master
ISA-to-SCSI Host Adapter
with SCSISelect
691 South Milpitas Blvd., Milpitas, California 95035
Copyright © 1993,1994 Adaptec, Inc. All rights reserved.
Adaptec and the Adaptec logo are registered trademarks,
and AHA and SCSISelect are trademarks of Adaptec, Inc.
Printed in Singapore
Stock No.: 510382-00 Rev. B CL 6/94
Information subject to change without notice.
11
R