|#FE00 - #FFFF||%1111111x xxxxxxxx||[[CPCISA by Yarek|CPCISA]] I/O access (low byte)||Read||Write
|-
|#FE80 - #FE81||%111111101000000x||[[CPC Albireo]] CH376 USBcontroller||Read||Write|-|#FEB0 - #FEB7||%1111111010110xxx||[[Albireo]]serial port||Read||Write
|-
|#FEE6||?||Port A - [[IDE8255]]||Read||Write