4.3 SCSI Commands

Table 4.33 Mode parameters

Bit

 

 

 

 

 

 

 

 

 

 

Byt

7

6

5

 

4

3

 

2

1

0

e

 

 

 

 

 

 

 

 

 

 

0-4

 

 

 

Mode Parameter Header

 

 

 

0-7

 

 

 

 

Block Descriptor

 

 

 

 

 

 

 

 

 

 

 

 

0-n

 

 

 

 

Mode Page (s)

 

 

 

The mode parameter list consists of Mode Parameter Header, Block Descriptor, and Mode Page.

Table 4.34 shows the format of the Mode Parameter Header field.

Table 4.34 Mode Parameter Header

Bit

7

6

5

 

4

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

Mode Data Length

 

 

 

1

 

 

 

 

Medium Type Code

 

 

 

 

 

 

 

 

 

 

 

 

 

2

WP

 

 

 

 

Reserved

 

 

 

3

 

 

 

Block Descriptor Length

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Medium Type Code returns the following values:

03h for normal MO media

07h for overwrite MO media

03h for other media or Not Ready state

The Write Protect (WP) bit indicates the state of the write protect key on the cartridge. If the WP bit is 1, the cartridge is write-protected.

Mode Data Length indicates the length (bytes) of mode data to be transferred.

Block Descriptor Length indicates the length (bytes) of the block descriptor to be transferred.

Table 4.35 shows the format of the Block Descriptor field.

Table 4.35 Block Descriptor

Bit

7

6

5

4

 

3

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

0

 

 

 

Density Code (00h)

 

 

 

1-3

 

 

 

Number of Blocks

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

Reserved

 

 

 

5-7

 

 

 

Block Length

 

 

 

 

 

 

 

 

 

 

 

 

 

C156-E224-01EN

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Image 97
Fujitsu MCJ3230SS manual Mode parameters, Mode Parameter Header, Block Descriptor