2. Port addresses and BIOS addresses for the host
adapter may be viewed with the SCSISelect util-
ity 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 ).
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 up-
per left-hand corner of the host adapter board are
as follows:
sw1
On Termination Installed
sw5
On Disable Floppy
✢
Off
Software Controlled
*
Off
Enable Floppy
*
sw2 sw3 sw4 I/O Port sw6 sw7 sw8 BIOS Address
Off Off Off
330–333h
*
Off Off Off
DC000h
*
On Off Off 334–337h On Off Off D8000h
Off On Off 230–233h Off On Off D4000h
On On Off 234–237h On On Off D0000h
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 termina-
tion can be found in Sections and .
Note
If switch sw1 is switched to On (or Closed), host adapter
termination will always be enabled regardless of the set-
ting in the SCSISelect utility.
8 Adaptec Customer Support
•
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 re-
quested by calling (800) 934-2766.
FCC Compliance Statement
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 reason-
able protection against harmful interference in residential in-
stallations. This equipment generates, uses, and can radiate
radio frequency energy, and if not installed and used in accord-
ance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that in-
terference 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 experi-
enced radio/television technician for additional suggestions
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.
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 compli-
ance label which shows only the FCC Identification number.
The full text of the associated label follows:
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.
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.
3
2 3
10 11
Installation Guide
AHA-1540CF/1542CF
High-Performance Bus Master
ISA-to-SCSI Host Adapter
with SCSISelect
R
(102 pages)
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