Hitachi hard disk drive specifications 
178 
 
Output Parameters To The Device 
The  number  of  continuous  sectors  to  be  verified.    If  zero  is  specified,  then  256 
sectors will be verified. 
The sector number of the first sector to be transferred. (L=0) 
In LBA mode, this register contains LBA bits 0 – 7. (L=1) 
The cylinder number of the first sector to be transferred. (L=0) 
In LBA mode, this register contains LBA bits 8 – 15 (Low), 16 – 23 (High). (L=1) 
The head number of the first sector to be transferred. (L=0) 
In LBA mode, this register contains LBA bits 24 – 27. (L=1) 
The retry bit, but this bit is ignored.   
Input Parameters From The Device 
The  number  of  requested  sectors  not  verified.    This  will  be  zero,  unless  an 
unrecoverable error occurs. 
The sector number of the last transferred sector. (L=0) 
In LBA mode, this register contains current LBA bits 0 – 7. (L=1) 
The cylinder number of the last transferred sector. (L=0) 
In LBA mode, this register contains current LBA bits 8 – 15 (Low), 16 – 23 (High). 
(L=1) 
The head number of the last transferred sector. (L=0) 
In LBA mode, this register contains current LBA bits 24 – 27. (L=1)