Fujitsu MHV2060AT Product Manual page 95

Note:
1. When the L bit is specified to 1, the lower 4 bits of the DH register and all
bits of the CH, CL and SN registers indicate the LBA bits (bits of the DH
register are the MSB (most significant bit) and bits of the SN register are
the LSB (least significant bit).
2. At error occurrence, the SC register indicates the remaining sector count of data
transfer.
3. In the table indicating I/O registers contents in this subsection, bit indication is
omitted.
C141-E218
5.3 Host Commands
5-19