5.3 Host Commands
Notes:
FR: Features Register
CY: Cylinder Registers
SC: Sector Count Register
DH: Drive/Head Register
SN: Sector Number Register
R:Retry at error
1 = Without retry
0 = With retry
Y:Necessary to set parameters
Y*: Necessary to set parameters under the LBA mode.
N:Not necessary to set parameters (The parameter is ignored if it is set.) N*: May set parameters
D:The device parameter is valid, and the head parameter is ignored. *O: Option (customizing)
D*: The command is addressed to the master device, but both the master device and the slave device execute it.
X:Do not care