Legacy firmware refers to the firmware features and controller register locations for features determined by AgigA Tech, Inc., for initial DDR4 NVDIMM designs. JEDEC has now standardized the NVDIMM firmware features, register locations and APIs so that one vendor’s NVDIMM can be compatible with any other vendor’s NVDIMM. All new Micron NVDIMM solutions will leverage the JEDEC firmware interface.