|#BDXX||%x0xxxx01 xxxxxxxx||6845 [[CRTC]] Data-Register|| - ||Write
|-
|#BEXX||%x0xxxx10 xxxxxxxx||6845 [[CRTC]] Status-Register(if any)||Read|| -
|-
|#BFXX||%x0xxxx11 xxxxxxxx||6845 [[CRTC]] Video-Address-Register||Read|| -
|#FBDF||?||[[Amstrad Serial Interface]] 8253 Timer Modus Select|| - ||Write
|-
|#FBxx||?||[[Real Time Clock]] (DIY)||?Read||?Write
|-
|#FBE0 - #FBE3||?||[[Dk'tronics Real Time Clock]]||?||?