SYMBiFACE II:IDE registers

This is the documentation about the IDE registers of the SYMBiFACE II expansion card. For more information about IDE please check for general specifications in the internet (can anyone provide good links here?).

Port          Read                Write
------------------------------------------------
#FD06         Alternate Status    Digital Output
#FD07         Drive Address       Not Used
#FD08         Data Register       Data Register
#FD09         Error Register      (Write Precomp Reg.)
#FD0A         Sector Count        Sector Count
#FD0B         Sector Number       Sector Number
#FD0C         Cylinder Low        Cylinder Low
#FD0D         Cylinder High       Cylinder High
#FD0E         SDH Register        SDH Register
#FD0F         Status Register     Command Register