Device comprising means for validating data written in a memory

A method of writing data into a memory validating the data written into the memory, said memory including a plurality of memory locations, comprising the steps

• determining whether a first memory location includes a first predetermined data value;
• determining whether a second memory location includes a second predetermined data value;
• writing data into said first memory location when said first predetermined value and said second predetermined value are determined to be equal;
• and
• placing a third predetermined value into a third memory location contiguous to said second memory location, said third predetermined value corresponding to an erasure.

A data processing device, comprising:

• a memory including a plurality of memory locations for storing a plurality of data values;
• writing means for writing successive data values into successive memory locations of said memory;
• and
• validation means for validating data values written into said memory locations;
• said writing means writing a next successive data value into a next successive memory location in said memory only upon said validation means validating the next prior written data value;
• said validation means validating the next prior writing data value by determining if first and second contiguous memory locations successive to the memory location of the next prior written data value correspond to an erasure;
• and
• said validation means validating the writing of said next successive data value by placing a predetermined data value corresponding to an erasure into a third memory location contiguous to said second memory location.