IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive Specifications page 206

H
R
Input Parameters From The Device
Sector Count
Sector NumberThis indicates the sector number of the sector to be transferred. (L = 0)
Cylinder High/Low
H
The file internally uses 40 bytes of ECC on all data read or writes. The 4 byte mode of operation is
provided via an emulation technique. As a consequence of this emulation it is recommended that 40 byte
ECC mode is used for all tests to confirm the operation of the files ECC hardware. Unexpected results
may occur if such testing is performed using 4 byte mode.
This indicates the head number of the sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 24–27. (L = 1)
The retry bit. If the retry bit is set to one, then retries are disabled.
This indicates the number of requested sectors not transferred.
In LBA mode this register contains the current LBA bits 0–7. (L = 1)
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)
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
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