| 摘要 |
PROBLEM TO BE SOLVED: To correctly supply erase data to a data storage device for executing queued and permuted commands, without accessing a system memory. SOLUTION: A CPU 11 issues to a control device 13 a write command with a data address of the system memory 12 set for data writing and a write command with a predetermined address set for data erasing. When supplying the command to an HDD 2 and receiving a request for data to be written by the command from the HDD 2, a SATA controller 21 outputs the address of the data and sends the requested data to the HDD 2. A data selection part 23 supplies to the controller 21 erase data if the address from the controller 21 is the predetermined address and, if not, data at the address of the system memory 12. COPYRIGHT: (C)2011,JPO&INPIT
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