Abstract: An improved system, method, and mechanism for executing and reconfiguring a reflash procedure maintains a vehicle state of charge while avoiding defective reflash operations. In an aspect of the invention, the technique includes receiving a reflash request, i.e., at a controller associated with the vehicle, the reflash request identifying one or more target modules and specifying replacement information. A reflash procedure in accordance with the received request is then begun. However, when and if the charge state of the vehicle drops below a predetermined threshold, the controller modifies the reflash procedure by first categorizing individual ongoing reflash operations and stopping any reflash operations belonging to the second class, while continuing any reflash operations belonging to the first class.

Abstract: An improved system, method, and mechanism for executing and reconfiguring a reflash procedure maintains a vehicle state of charge while avoiding defective reflash operations. In an aspect of the invention, the technique includes receiving a reflash request, i.e., at a controller associated with the vehicle, the reflash request identifying one or more target modules and specifying replacement information. A reflash procedure in accordance with the received request is then begun. However, when and if the charge state of the vehicle drops below a predetermined threshold, the controller modifies the reflash procedure by first categorizing individual ongoing reflash operations and stopping any reflash operations belonging to the second class, while continuing any reflash operations belonging to the first class.

Abstract: At least-recently used (LRU) storage means and its associated logic maintain usage history for associativity class entries of a cache directory. The storage means includes an independent storage array for each of the bit positions of an LRU binary code pattern. Parity bits are provided in the arrays for each LRU bit. Separate read/write controls simultaneously write updated LRU bits to some of the arrays and read out unchanged LRU bits from the remaining arrays during updating of a usage history entry when its associativity class is used. Pattern checking logic collects the update bits and the unchanged bits during the update cycle to determine whether or not the new entry is a valid LRU combination. A parity bit is written with each of the update LRU bits written into the arrays and parity bits are read out from the arrays with the unchanged LRU bits for parity checking of each unchanged LRU bit during updating of usage history entries.