3
AHA-1640 Installation Guide
Part Number: 510160-00, Rev. B
Print Spec Number: 492772-00
Current Date: 5/20/94
ECN Date: 5/31/94
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4
Select the menu option to set the configuration
parameters from the SRD. Another menu appears
when this process is completed.
5
Select the menu option to control or perform the
configuration process automatically.
The program analyzes the ADF and selects
address spaces and parameter values that do not
conflict with values already in use. Then it loads
the values into CMOS RAM. A message appears
when the automatic configuration is complete.
6
Press the indicated key to continue. The host
adapter is now ready for normal operation.
7
Install the operating system software and boot
your computer.
If you remove the AHA-1640 host adapter from your
computer in the future, you must run automatic con-
figuration again to update the parameters.
The following table lists the values that should be
entered for various AHA-1640 configuration
options. Some of the option values vary, depending
on whether you boot your computer from a SCSI
disk drive connected to the host adapter.
Configuration
Option
Value when Booting
from Host Adapter
Value when Not Boot-
ing from Host Adapter
Port I/O Address
Lowest slot number of
330h, 230h, 130h
Nonconflicting
Arbitration Level
5
Nonconflicting
Interrupt Level
Nonconflicting
Nonconflicting
Host Adapter BIOS
Address
Enable only one BIOS
Disable all other BIOS’s
Host Adapter SCSI ID
7 (or as required)
7 (or as required)
SCSI Parity Checking
On if all devices support
parity;
Off if any device does
not support parity
On if all devices support
parity;
Off if any device does
not support parity
Synchronous Data
Transfer Initiated by
Host Adapter?
Yes
Yes
Fairness
On
On
Synchronous Data
Transfer Negotiation
On: Performed by host
adapter
Off: Performed by
peripheral
On
