Operating instructions

15-4

SCSI REFERENCE 1012975

CHAPTER 15—READ ELEMENT STATUS (B8h)

15.3 WHAT THE AUTOLOADER RETURNS

This section describes the Element Status page structure and the element

descriptors that the autoloader supports. The Element Status page begins with

an eight-byte Element Status Header, followed the requested element

descriptors.

15.3.1 ELEMENT STATUS HEADER

This header is returned once for each READ ELEMENT STATUS command

received by the autoloader.

First Element Address Reported – Bytes 00 and 01

This field indicates the smallest element address found that meets the CDB

requirements.

Number of Elements Reported – Bytes 02 and 03

This field indicates the total number of elements that meet the CDB

requirements. The autoloader returns element descriptors for these elements if

you specified a sufficient Allocation Length.

Byte Count of Report Available – Bytes 05 through 07

This field indicates the total number of bytes of element status page data

available that meet the CDB requirements. This value is not adjusted to match

the value that you specified for the Allocation Length field in the CDB.

Bit

Byte

7 6 5 4 3 2 1 0

00 (MSB)

First Element Address Reported

(LSB)

02 (MSB)

Number of Elements Reported

(LSB)

04 Reserved

05 (MSB)

Byte Count of Report Available

(LSB)