User's Manual

5.3 Host Commands
At command completion (Shadow Block Registers contents to be read)
ST Status information
DH x L x x HD No. / LBA
CH
CL
SN
SC
ER
Start cylinder No. [MSB] / LBA
Start cylinder No. [LSB] / LBA
Start sector No. / LBA [LSB]
00 (*1)
Error information
*1 If the command is terminated because of an error, the number of
remaining sectors for which data has not been written or verified is
set in this register.
C141-E259 5-37