Datasheet

Travelstar 80GN Hard Disk Drive Specification
131
LBA High/Low This indicates the cylinder number of the last transferred sector. (L = 0)
In LBA mode, this register contains current LBA bits 8–15 (Mid), 16–23 (High). (L = 1)
H This indicates the head number of the last transferred sector. (L = 0)
In LBA mode, this register contains current LBA bits 24–27. (L = 1)