Method and apparatus for an always open write-only register based memory mapped overlay interface for a nonvolatile memory

摘要

Methods and systems are provided that may include a controller comprising an access element and a command interface. Access element may provide access to a physical nonvolatile memory device. Physical nonvolatile memory device may have a default setting permitting a direct read operation of the physical nonvolatile memory device while prohibiting a direct write operation of the physical nonvolatile memory device. A command interface may modify access to the physical nonvolatile memory device by issuing a command through at least one write overlay window of a memory partition to change the default setting to write to the physical nonvolatile memory. The at least one write overlay window may be logically separate from at least one read overlay window of the memory partition.