Hitachi 7K400 Specifications - Page 248
means of an emulation technique. As a consequence of this emulation it is recommended that 52-byte
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Cylinder High/Low H This indicates the cylinder number of the sector to be transferred. (L = 0) In LBA mode this register contains current the LBA bits 8-15 (Low) and bits 16-23 (High). (L = 1) This indicates the head number of the sector to be transferred. (L = 0) In LBA mode this register contains current the LBA bits 24-27. (L = 1) The drive internally uses 52 bytes of ECC on all data read or writes. The 4-byte mode of operation is provided by means of an emulation technique. As a consequence of this emulation it is recommended that 52-byte ECC mode be used for all tests to confirm the operation of the ECC hardware of the drive. Unexpected results may occur if such testing is performed using 4-byte mode. Deskstar 7K400 Hard Disk Drive Specification 234
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