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| 7 |
| 6 | 5 | 4 |
| 3 | 2 | 1 | 0 |
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| 0 |
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| Operation | Code (55h) |
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| 1 |
| Reserved (0) |
| PF |
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| SP (0) | |
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| 2 | (MSB) |
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| 6 |
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| 7 | (MSB) |
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| Parameter List Length |
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| 8 |
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| 9 |
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| Control |
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CDB fields:
PF | Page Format | |
| 0 | The MODE SELECT parameter data is not |
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| the parameter header and block descriptor may be sent. |
| 1 | The parameter data is |
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SP | Save Pages | |
| 0 | This bit is not supported and must be zero. |
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Parameter List | 0 | No data is transferred. |
Length | >0 | The length in bytes of the MODE SELECT parameter list to be transferred. |
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Specific status:
Following a successful Mode Select command, Unit Attention status is posted to all initiators other than the initiator of the Mode Select command. The sense key is set to UNIT ATTENTION. Additional sense is set to 2A01h (mode parameters changed).
Mode parameter pages
Mode data is recovered from the drive by means of a MODE SENSE command. After modification, it is returned to the drive via a MODE SELECT command. In
72 Commands