Host Adapter Interrupt (Irq) Channel; Host Adapter Scsi Id; Scsi Parity Checking; Host Adapter Scsi Termination - Adaptec AVA-2822 User Manual

AVA-2820/2822/2825 User's Guide

Host Adapter Interrupt (IRQ) Channel

Each add-in board installed in your computer, including the host
adapter, must be assigned a unique IRQ. This interrupt allows the
host adapter to send a message and get the immediate attention of
the computer 's CPU (central processing unit). Select this option to
configure the IRQ for the host adapter. The default setting is 11.

Host Adapter SCSI ID

This option allows you to change the host adapter SCSI ID. Eight
SCSI IDs are available for the AVA-2820/2822/2825. The default
setting is 7 which has the highest priority on the SCSI bus.

SCSI Parity Checking

Select this option to enable or disable SCSI Parity Checking on the
host adapter. The default setting is enabled.
The host adapter always checks parity when reading from the SCSI
bus to verify the correct transmission of data from your SCSI
devices. If SCSI Parity Checking is enabled on the host adapter, it
should be enabled on all SCSI devices. If any attached SCSI device
does not support SCSI parity, then disable SCSI Parity Checking on
the host adapter as well as on each SCSI device. Most devices today,
however, support SCSI parity.

Host Adapter SCSI Termination

This option allows you to configure host adapter SCSI termination.
Termination is enabled by default. Figure 3-4 displays your choices.
Adaptec AVA-2820/2822/2825
AVA-2820/2822/2825 at Port 0340h
Configuration
Host Adapter Interrupt (IRQ) Channel ...............
Host Adapter SCSI ID .....................................
SCSI Parity Checking .....................................
Host Adapter SCSI Termination .......................
Both ends of the SCSI bus should be terminated. Host Adapter
SCSI Device Configuration ..........................
termination should be disabled if you attach SCSI devices to
Advanced Configuration Options ...............
both internal and external connectors, since the host adapter
would then be in the middle of the SCSI bus.
<F6> - Reset to Host Adapter Defaults
Devices Connected
BIOS Information
Internal devices only
Revision .......................................................
External devices only
Internal and External devices
Base Address ................................................
Checksum ....................................................
Arrow keys to move cursor, <Enter> to select option, <Esc> to exit ( * =default)
Figure 3-4. Host Adapter SCSI Termination Selection
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AVA-2820/2822/2825 User's Guide
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SCSISelect(TM) Utility v1.00
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Disabled
7
Enabled
Disabled
Press <Enter>
Press <Enter>
Termination
Enabled
1.00
Enabled
Disabled
DC000h
0000h
ECN Date: 1/31/95
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