M2488 PRODUCT GUIDE

MEDIA CHANGER COMMANDS

 

Table 6-30. Import Export Element Descriptor Field Description (Continued)

 

 

 

 

BYTE

BIT

VALUE

DESCRIPTION

 

 

 

 

2

4

1

The Export Enable bit is always set to one to indicate that the medium-changer’s

 

 

 

import export element supports export operations.

 

 

 

 

2

5

1

The Import Enable bit is always set to one to indicate that the medium-changer’s

 

 

 

import export element supports import operations.

 

 

 

 

9

6

0

The Invert bit is always set to 0. The cartridges for the supported tape format cannot

 

 

 

be inverted.

 

 

 

 

9

7

1

If the SValid bit is set to one then the Source storage element address field indicates

 

 

 

the address of the element where the current unit of media in the element was previ-

 

 

 

ously stored.

 

 

0

If the SValid bit is zero then the value in the Source storage element address field is

 

 

 

not valid.

 

 

 

 

Table 6-31. Data Transfer Element Descriptor (Type Code=4h)

 

 

 

 

 

BITS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BYTES

7

6

5

 

4

 

3

 

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

0

MSB

 

 

 

Element Address

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

LSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

Reserved

 

 

 

Access

 

Exception

Reserved

Full

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

Additional Sense Code

 

 

 

 

 

 

 

 

 

 

5

 

 

Additional Sense Code Qualifier

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

Not bus=0

Reserved

ID Valid=0

 

LUN Valid =0

 

Reserved

 

Logical Unit Number=0

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

SCSI Bus Address=0

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

SValid

Invert=0

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

MSB

 

 

Source storage element address

 

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

LSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12-15

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

March 1997

CG00000-011503 REV. A

6-27

Page 287
Image 287
Fujitsu M2488 manual Data Transfer Element Descriptor Type Code=4h, Msb