Seagate Technology 10002475-003, Product Description Manual

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Chapter 5 ATAPI Interface
Page 40 STT8000 ATAPI Minicartridge Drive
Erase
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation code (19h)
1 Reserved 1 (Long)
2 Reserved
3 Reserved
4 Reserved
5 Reserved
The Erase command is only accepted when the drive is ready and located at
either BOP 0/1 or EOD. Erase at BOP causes the drive to write a Control/Filler
Frame at the beginning of the current partition, followed by an EOD pattern.
(The Use Count field of the Control Frame is incremented from its previous
value). This action results in a logical erasure of the current partition. If
partition 0 is erased, partition 1 becomes logically erased because of the use
count field. Erase at EOD is accepted, but no operation is performed except a
write flush if following a WRITE command. This result is because all data
following EOD is already logically erased.
The DSC bit is reset (0) after this command is accepted and is set (1) when the
command is complete. REQUEST SENSE can then be used to verify successful
command completion.
Inquiry
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation code (12h)
1 Reserved
2 Reserved
3 Reserved
4 Allocation Length
5 Reserved
The INQUIRY command is always accepted, regardless of the state of the DSC
bit. The command does not modify the status of DSC.
This command returns the lesser of 36 bytes or the Allocation Length
parameter of information. The following table defines the returned values.
Note: Much of the information returned by this command is redundant
with the ATAPI Identify Device command response.