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5.45WRITE (10) Command (2Ah)
The WRITE (10) command requests that the drive write
Table
Bit | 7 | 6 | 5 | 4 |
| 3 | 2 |
| 1 | 0 |
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0 |
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| Operation Code (2Ah) |
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1 |
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| DPO |
| FUA |
| Reserved | RelAdr | |
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2 - 5 |
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| Logical Block Address |
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6 |
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7 - 8 |
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| Transfer Length |
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9 |
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| Control |
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Table | ||
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Field | Description | |
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| Disable Page Out. When the value of the field is 1, the drive tells the controller to bypass | |
| cache as much as possible. The buffers used for the WRITE data are given a low priority. | |
| This bit may be useful if the host CPU is performing a background copy operation and | |
| does not want to wipe out the drive's cache. | |
DPO | When DPO is 0, the drive tells the controller to cache this WRITE data in a normal man- | |
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| ner. | |
| NOTE: The drive normally assigns a low priority to write caching. Therefore, the DPO | |
| bit in a WRITE command is ignored. | |
| Force Unit Access. When 1, the data must be written on the medium before GOOD status | |
FUA | is returned. When 0, GOOD status may be returned after the data is fetched from the ini- | |
tiator and before it is written to the medium. If the WCE (Write Cache Enable) bit on the | ||
| MODE SELECT command Caching Page is clear, the FUA bit is ignored and behaves as | |
| if it were always set (that is, if WCE = 0, the controller forces FUA = 1). | |
Logical Block | The address of the first logical block where the Write operation will occur. | |
Address | ||
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RelAdr | Relative Address. This drive does not support this feature; the field must be 0. | |
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Transfer Length | The number of contiguous logical blocks of data to write. The drive returns CHECK | |
CONDITION status with the correct sense data if the specified transfer would cause the | ||
| write operation to extend beyond the Logical Block Address space. |
Maxtor Atlas 10K V |