Seagate Technology 10002475-003, Product Description Manual

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ATAPI Interface Chapter 5
Product Description Manual Page 51
Rewind
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation code (01h)
1 Reserved
2 Reserved
3 Reserved
4 Reserved
5 Reserved
The Rewind command first ensures that all buffered write data has been
transferred to the medium, then causes the device to position to BOP of the
current partition.
The DSC bit is reset (0) after this command is accepted and is set (1) when the
drive is ready to write at BOP0 (or encountered a hardware error). REQUEST
SENSE can then be used to verify successful command completion.
Space
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation code (11h)
1 Reserved Space Code
2 (MSB)
3 Count
4 (LSB)
5 Reserved
The only Space codes that are supported are 001b (Filemarks) and 011b (End of
Data on Current Partition). For Space Filemarks, negative count (2s
compliment) indicates Space Filemarks Reverse.
The DSC bit is reset (0) after this command is accepted and is set (1) when the
command is completed and the drive is ready. REQUEST SENSE can then be
used to verify successful command completion.