Changes
|-
|#BCXX||6845 [[CRTC]] Address-Register||Write
|-
|#BDXX||6845 [[CRTC]] Data-Register||Write
|-
|#BEXX||6845 [[CRTC]] Status-Register||Read
|-
|#BFXX||6845 [[CRTC]] Video-Address-Register||Read
|-
|#BDXX||select ROM||Write
|-
|}
<pre>
#EFXX : Printer Port write / -
#F4XX : 8255 PIO Port A write / read
