|#FBE4||?||Hard Disc Reset||Read||Write
|-
|#FBxx||?||[[Real Time Clock]](DIY)||?||?
|-
|#FBE0 - #FBE3||?||dk[[Dk'tronics RTC.Real Time Clock]]||?||?
|-
|#FBE6||?||Port B - [[IDE8255]]||?||?
|#FBE7||?||RS Port - [[IDE8255]]||?||?
|-
|#FBE8||?||dk[[Dk'tronics RTC.Real Time Clock]]||?||?
|-
|#FBEE||?||[[Amstrad SSA-1 Speech Synthesizer]]||Read||Write