aaaaaa... Status of each stack before reset. First position contains
                  the status of stack 0, second position the status of
                  stack 1 and so on. The last position contains the status
                  of System stack. Number of stacks depends on the current
                  configuration of SW. Possible values for each stack are:
                      0 : status OK, no overflow
                      1 : status not OK, stack overflow,

        bbbbbbb   Status of each block set before reset. First position
                  contains the status of block set 1, second position the
                  status of block set 2 and so on. Possible values for each
                  block set are:
                      0 : status OK
                      1 : block set full
                      2 : (de)allocation error or total memory corruption

                  Note: This display is only valid when a unknown or
                  a stack overflow interrupt has occured.