Magnetic memory organization

A magnetic bubble memory herein includes a direct propagation path between a bubble generator and a detector. A control circuit is adapted to store indications of the current state of the memory and the address of presently accessed data in the path responsive to a power failure signal. Portions of the memory are organized in a familiar major, minor mode, data from two major loops being replicated into the direct path. The arrangement exhibits improved access times, improved data rates and is secure from power failure problems. Moreover, the memory organization permits the realization of large capacity chips without requiring block replication.