there is this gap of "non existent" registers from 0x010 up to 0x03F.
Some register addresses are used by the x-functions module.
Some (one ?) register addresses are used to point to knowwhere when selecting a peripherie afterwards. Which addresses are commonly used ?
is it possible, allowed to use some of the not already used register addresses to select a register maped peripherie which would be a simple and straight forward implementation ?