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| Tests and Diagnostics | |
| [HDC Status] : P – 1F7h |
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| Bit | Name | Function | |
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7 | BSY（busy） | 0: HDC is ready. | ||
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| 1: HDC is busy. |
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6 | DRY（drive ready） | 0: HDD does not accept the command. | ||
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| 1: HDD is ready. |
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5 | DWF（write fault） | 0: Write is successful | ||
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| 1: Write error |
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4 | DSC（seek complete） | 0: Seek error | ||
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| 1: Seek normal termination |
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3 | DRQ（data request） | 0: No data transfer request | ||
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| 1: Data transfer being requested. |
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2 | COR | 0: Not used | ||
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| （corrected data） | 1: Data error occurrence |
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1 | IDX（index） | 0: Not used | ||
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| 1: Index detection |
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0 | ERR（error） | 0: Normal termination | ||
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| 1: End with error |
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PORTEGE M780 Maintenance Manual | [CONFIDENTIAL] |
