IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive Specifications page 203

Input parameters from the device
Sector Count
Sector NumberThis indicates the sector number of the last transferred sector. (L = 0)
Cylinder High/Low
H
This indicates the number of requested sectors not transferred. The Sector Count
will be zero, unless an unrecoverable error occurs.
In LBA mode this register contains current the LBA bits 0–7. (L = 1)
This indicates the cylinder number of the last transferred sector. (L = 0)
In LBA mode this register contains the current LBA bits 8–15 (Low) and bits
16–23 (High). (L = 1)
This indicates the head number of the last transferred sector. (L = 0)
In LBA mode this register contains current the LBA bits 24–27. (L = 1)
Travelstar 60GH & 40GN hard disk drive specifications
190