Compaq 1200 Betriebsanweisung PDF herunterladen (Seite 144)

4-58 User’s Guide

pk*0_host_id

Sets the controller host bus node ID to a value between 0 and 7.

Each SCSI bus in the system requires a controller. Buses can theoretically support up

to eight devices; however, the eighth device must always be a controller. Each

device on the bus, including the controller, must have a unique ID, which is a

number between 0 and 7. This is the bus node ID number.

On each bus, the default bus node ID for the controller is set to 7. You do not need to

change the controller bus node ID unless you place two or more controllers on the

same bus.

To list the controllers on your system, enter the command show device. SCSI

devices begin with the letters “pk” (for example, pka0). The third letter is the adapter

ID for the controller. When entering the command set pk*0_host_id, replace the

asterisk with the adapter ID letter.

The syntax is:

set pk*_host_id scsi_node_id

The value for scsi_node_id is the bus node ID, a number from 0 to 7.

pk*0_soft_term

Enables or disables SCSI terminators. This command applies to systems that use the

QLogic ISP1020 SCSI controller.

The QLogic ISP1020 SCSI controller implements the 16-bit wide SCSI bus. The

QLogic module has two terminators, one for the low eight bits and one for the high

eight bits.

The syntax is:

set pk*0_soft_term value

The options for value are:

off Disables termination of all 16 bits.

low (default) Enables low eight bits and disables high eight bits.

high Enables high eight bits and disables low eight bits.

on Enables all 16 bits.

diff Places the bus in differential mode.

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Compaq 1200 Betriebsanweisung Seite 144