IBM T200F manual Report Density Support Command, Report Density Support Header

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REPORT DENSITY SUPPORT

Table 72. REPORT DENSITY SUPPORT Command

 

7

6

5

4

 

3

 

2

1

0

 

 

 

 

 

 

 

 

 

 

0

 

 

 

Operation Code (44h)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Logical Unit Number (0)

 

 

Reserved

 

Media

 

 

 

 

 

 

 

 

 

 

2

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

Allocation Length

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

 

 

Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The REPORT DENSITY SUPPORT command returns details about the tape formats supported by the drive. The data is returned as a header and a series of descriptor blocks. If the Media flag is set, then one descriptor block is returned with the data for the currently loaded tape. If the Media bit is clear, then one descriptor block is returned for each format supported by the drive.

The format of the REPORT DENSITY SUPPORT header is as follows:

Table 73. REPORT DENSITY SUPPORT Header

 

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

0

 

 

Available Density Descriptor Length

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

The Available Density Descriptor Length gives the total amount of data that is available to be returned.

Chapter 2. Command Support 55

Page 69
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IBM T200F manual Report Density Support Command, Report Density Support Header