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