User`s manual

IOI - I/O Inquiry

3-91

where: mm = the CLUN number and

while: nn = the DLUN number

The CLUN/DLUN numbers are always sent to the 7-segment LEDs

regardless of the ENV setting.

With the variable number of devices that can now be attached to a

given system, the memory requirements to house the pertinent

device descriptors cannot be met. The debugger reserves space for

16 device descriptors. The device descriptor table (16 entries) can be

viewed or cleared by this command with the L and C options,

respectively.

Each mass storage boot device and network interface boot device is

identified by a device name. Each device type that the product

supports is contained/listed within device probe tables. These

tables are modified to contain the associative device name.

At probe time, the probed device's name is copied into the dynamic

device configuration tables housed within NVRAM. This will only

be done, of course, if the device is present. The user may view the

system's device names by performing the following operations.

For mass storage devices while probing, the D option allows users

to display the device names of the attached devices. These device

names are per the IBM firmware and the IBM AIX naming

conventions.

To view the device names of mass storage devices which are

currently configured (or have been accessed via a boot (PBOOT), or

via an I/O operation (IOP)), use the N option.

Examples

Example 1: Probe for all possible devices. As a device is found

(probe was successful) it is displayed to the console with the

associative inquiry data.