Patent ID: 8464016

Claim:
A method for switching over in a memory for a control unit, a first storage area in the control unit being overlaid by a second storage area, the second storage area including at least two memory pages, each memory page configured to overlay the first storage area, comprising: performing, by software of the control unit: (i) switching over between an original non-overlaid memory configuration and an overlaid configuration in which one of the two memory pages of the second storage area overlays the first storage area, and (ii) switching over between overlaying the first storage area using a first one of the memory pages of the second storage area and overlaying the first storage area using a second one of the memory pages of the second storage area; in the non-overlaid memory configuration, read-accessing the first storage area using the control unit; and in the overlaid configuration, read-accessing the overlaying memory page in place of the first storage area, using the control unit.