Table A-18: Segment Descriptor For Code 04H - Spectra Logic Spectra S50 User Manual

Inline Data to Stream Device Operation
Descriptor Code 04h
The segment descriptor format for EXTENDED COPY operation that moves inline data to a
stream device is shown in Table A-18. This format is required for EXTENDED COPY
descriptor code 04h. The field definitions for the first eight-bytes are as defined in
Segment Descriptors on page 93, except for Bytes 4 and 5, which are reserved instead
of having the Source Target Identifier.

Table A-18: Segment Descriptor for Code 04h

Bit
Byte 7
0
1
2
3
4
5
6 (MSB)
7
8
9 (MSB)
10
11
12 (MSB)
13
14
15
The Device Transfer Length specifies the amount of data to be written to the
destination stream device on each write operation. See Table A-12 on page 92 for
information on how the segment descriptor Device Transfer Length interacts with the
Tape Block Length Parameter of the device specific information.
The Number of Bytes field specifies the number of bytes of inline data that are to be
transferred to the stream device. The inline data comes from the optional inline data at
the end of the parameter list. The inline data to stream segment descriptors must be
Appendix A. Extended Copy—83h—143r1 Specifications
6 5 4
Descriptor Type Code (04h)
Descriptor Length
Destination Target Identifier
Device Transfer Length
Number of Bytes
100
3 2
Reserved
Reserved
Reserved
Reserved
Reserved
1 0
(LSB)
(LSB)
(LSB)