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| 5 | 4 |
| 3 | 2 | 1 |
| 0 |
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| 0 |
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| 2 | PC |
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| 3 |
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| Sub Page Code |
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| 4 |
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| Allocation Length |
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| 6 |
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| 7 | (MSB) |
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| 9 |
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| Control |
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CDB fields:
DBD | Disable Block Descriptors flag | ||
| 0 | Allows the drive to return the MODE SELECT block descriptor. | |
| 1 | Prevents the drive from returning the MODE SELECT block descriptor. | |
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PC | Page | ||
| shown in the following table: | ||
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| 7 | 6 | Description |
| 0 | 0 | Report Current Values: the current values of the parameters are returned. |
01 Report Changeable Values: the page returned has its
10/1 Report Default Values: the page returned contains the
Page Code This allows the host to select any specific page, or all the pages supported by the drive.
0The drive returns no mode pages, so only the header and block descriptor are returned.
Any mode The drive returns that page. page code
| 3Fh | The drive returns all mode pages. |
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Sub Page | The | |
Code | should be set to 0. | |
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Allocation | Specifies the number of bytes that the host has allocated for returned MODE SENSE data. | |
Length | 0 No data transfer will occur. This is not considered an error. | |
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nThe maximum number of bytes which the drive should return in its
MODE SENSE 1Ah/5Ah 97