Conventional SCSI devices are not SCAM-capable; their SCSI IDs are
set by jumpers or switches and cannot be changed by SCAM
commands. This causes a problem only if two or more older devices
are set to the same SCSI ID, which will create a conflict. If this
happens, you must change the switch or jumper settings to a
different SCSI ID. See your SCSI peripheral documentation for
directions on how to do this.
The default host adapter ID is SCSI ID 7 and should not be
changed. Only the SCSISelect utility can change the host adapter
ID.
If you need to assign SCSI IDs manually, it is recommended that
you assign SCSI IDs 0 and 1 to the first two SCSI hard disk
drives in your system.
Terminating the SCSI Bus
The last physical SCSI device on either end of the SCSI but must have
a set of resistors called terminators. Terminators must be removed
from, or disabled on, all other devices on the SCSI bus.
The Dock II and most SCSI peripherals have built-in terminators that
can be enabled or disabled. Terminate only the devices at each end of
the SCSI bus.
Terminating the Host Adapter
Termination is enabled by default on the Dock II. You must disable
host adapter termination if you attach SCSI devices to both the
internal and external SCSI connectors.
The following table lists the three possible types of SCSI bus
configuration.
Devices Connected to SCSI Bus
Host Adapter Termination
Internal devices only
(host adapter at end of bus)
Enabled
Chapter 5. Using the SCSI Controller
75
Title: C78JAMST CreationDate: 05/06/94 19:15:58
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