|'''#FD0D''' || Cylinder High || Cylinder High
|-
|'''#FD0E''' || Device/Head Register || Device/Head Register
|-
|'''#FD0F''' || Status Register || Command Register
* [[SYMBiFACE II:IDE routines|Low level IDE routines]]
* [[Programming:SYMBiFACE_II|SYMBiFACE II documentations]]
* [http://www.t13.org/documents/uploadeddocumentsUploadedDocuments/docs2006project/d1699r3fd1153r18-ata8ATA-acsATAPI-4.pdf specification]
[[Category:Programming]]