A circuit-based apparatus for error assessment of data storage, comprising: a data bus ; a plurality of configuration registers (120-124, 220-224) configured and arranged to receive configuration data over the data bus ; and logic circuitry configured and arranged to ascertain that stored data, as stored in each of the plurality of configuration registers (120-124, 220-224), accurately corresponds to the configuration data sent over the data bus for writing into each of the plurality of configuration registers (120-124, 220-224), wherein the logic circuitry comprises a first circuitry and a first signature register , wherein the first circuitry is coupled to the data bus and configured to receive the configuration data sent over the data bus to the configuration registers (120-124, 220-224) and to generate a logical derivation of the configuration data sent over the data bus , wherein the first signature register is provided to store a first data signature corresponding to the logical derivation, wherein the logic circuitry comprises a second circuitry , wherein the second circuitry is coupled to the plurality of configuration registers (120-124, 220-224) and configured to logically combine outputs, each of which corresponds to data read out from each of the plurality of configuration registers (120-124, 220-224), into a second data signature, wherein the logic circuitry comprises a comparator circuit , wherein the comparator circuit is configured to receive the first data signature from the first signature register and the second data signature from the second circuitry and further configured to process and compare the first data signature and the second data signature. a data bus ; a plurality of configuration registers (120-124, 220-224) configured and arranged to receive configuration data over the data bus ; and logic circuitry configured and arranged to ascertain that stored data, as stored in each of the plurality of configuration registers (120-124, 220-224), accurately corresponds to the configuration data sent over the data bus for writing into each of the plurality of configuration registers (120-124, 220-224), wherein the logic circuitry comprises a first circuitry and a first signature register , wherein the first circuitry is coupled to the data bus and configured to receive the configuration data sent over the data bus to the configuration registers (120-124, 220-224) and to generate a logical derivation of the configuration data sent over the data bus , wherein the first signature register is provided to store a first data signature corresponding to the logical derivation, wherein the first circuitry is coupled to the data bus and configured to receive the configuration data sent over the data bus to the configuration registers (120-124, 220-224) and to generate a logical derivation of the configuration data sent over the data bus , wherein the first signature register is provided to store a first data signature corresponding to the logical derivation, wherein the logic circuitry comprises a second circuitry , wherein the second circuitry is coupled to the plurality of configuration registers (120-124, 220-224) and configured to logically combine outputs, each of which corresponds to data read out from each of the plurality of configuration registers (120-124, 220-224), into a second data signature, wherein the logic circuitry comprises a comparator circuit , wherein the comparator circuit is configured to receive the first data signature from the first signature register and the second data signature from the second circuitry and further configured to process and compare the first data signature and the second data signature. <EOS>