Abstract: A programmable processor and methods thereof are provided. The example programmable processor may include a memory lock signal generator outputting a memory lock signal, the memory lock signal indicating whether a requesting entity has authority to access requested data stored in a memory and a memory access controller receiving a request for the requested data and the memory lock signal, the memory access controller outputting a response to the requesting entity in response to the request based on the memory lock signal. A first example method may include receiving a request, from a requesting entity, to access requested data stored in a memory, determining information associated with the requesting entity and selectively outputting a response to the received request based on a security level of a location of the requested data within the memory and the determined information.

Abstract: A programmable processor and methods thereof are provided. The example programmable processor may include a memory lock signal generator outputting a memory lock signal, the memory lock signal indicating whether a requesting entity has authority to access requested data stored in a memory and a memory access controller receiving a request for the requested data and the memory lock signal, the memory access controller outputting a response to the requesting entity in response to the request based on the memory lock signal. A first example method may include receiving a request, from a requesting entity, to access requested data stored in a memory, determining information associated with the requesting entity and selectively outputting a response to the received request based on a security level of a location of the requested data within the memory and the determined information.

Abstract: A portable CD-MP3 system and a file system decoding method of operating the same utilize a high-performance DSP to decode an audio file in analyzing a file system. The DSP stores data regarding the file system information in a right-channel region of a memory unit if the analyzed file system information represents the title of an audio file, and stores the data in a left-channel region of the memory unit for navigation of the audio file if the analyzed file system information does not represent the title of the audio file.