At command completion (I/O registers contents to be read)
1F7H(ST) | Status information |
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1F6H(DH) | 00 |
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1F5H(CH) | 00 |
1F4H(CL) | 00 |
1F3H(SN) | 01H |
1F2H(SC) | 01H |
1F1H(ER) | Diagnostic code |
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(17)FORMAT TRACK (X'50')
Upon receipt of this command, the device sets the DRQ bit and waits the completion of
The drive supports this command for keep the compatibility with previous drive only.
(18)READ LONG (X'22' or X'23')
This command operates similarly to the READ SECTOR(S) command except that the device transfers the data in the requested sector and the ECC bytes to the host system. The ECC error correction is not performed for this command. This command is used for checking ECC function by combining with the WRITE LONG command.
The READ LONG command supports only single sector operation.
At command issuance (I/O registers setting contents)
1F7H(CM) | 0 | 0 | 1 |
| 0 |
| 0 | 0 | 1 | R | |
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1F6H(DH) | × | L |
| × |
| DV |
| Head No. /LBA [MSB] | |||
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1F5H(CH) |
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| Cylinder No. [MSB] / LBA |
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1F4H(CL) |
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| Cylinder No. [LSB] / LBA |
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1F3H(SN) |
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| Sector No. |
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| / LBA [LSB] |
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1F2H(SC) |
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| Number of sectors to be transferred |
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1F1H(FR) |
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| xx |
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R = 0 or 1
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