| Port | Read | Write |
| #FD06 | IDE Alternate Status | IDE Digital Output |
| #FD07 | IDE Drive Address | Write: Not Used |
| #FD08 | IDE Data Register | IDE Data Register |
| #FD09 | IDE Error Register | IDE (Write Precomp Reg.) |
| #FD0A | IDE Sector Count | IDE Sector Count |
| #FD0B | IDE Sector Number | IDE Sector Number |
| #FD0C | IDE Cylinder Low | IDE Cylinder Low |
| #FD0D | IDE Cylinder High | IDE Cylinder High |
| #FD0E | IDE SDH Register | IDE SDH Register |
| #FD0F | IDE Status Register | IDE Command Register |
| #FD10 | PS/2 Mouse Status | Write: Not used |