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 |