Changes
/* I/O Port Summary */
|#FBDF||?||[[Amstrad Serial Interface]] 8253 Timer Modus Select|| - ||Write
|-
|#FBDF||?||[[Cirkit serial Interfaceinterface]] 8251 UART status/control register||Read||Write
|-
|#FBxx+0||?||CPCI [[Real Time Clock]] Index (DIY)||-||Write
