Abstract: A devices and method for parsing a data stream comprises a parser stack configured to store one or more parsing symbols, each parsing symbol representing a different state of data stream parsing, a table interface configured to retrieve one or more production rules from a production rule table according to the parsing symbols, and a state machine configured to control the parsing of a data stream according to the retrieved production rules.

Abstract: A device comprises a plurality of interface circuits configured for communicating between a semantic processing unit and a memory and a selection circuit for selecting an interface circuit allocated to a semantic processing unit for processing a data operation request in the memory.

Abstract: A device performs lookup functions for a semantic processing unit. The device comprises a plurality of interface circuits for receiving data operation requests from the semantic processing unit. The device comprises a buffer for allocating an interface circuit to a semantic processing unit having a data operation request. A selection circuit, coupled between the plurality of interface circuits and a memory unit, selects an allocated circuit for accessing the memory unit to process the data operation request.

Abstract: A system and method for parsing a data stream comprises a production rule table populated with production rules, a parser table populated with production rule codes that correspond to production rules within the production rule table, and a direct execution parser to identify production rule codes in the parser table and to retrieve production rules from the production rule table according to the identified production rule codes, the direct execution parser is operable to parse a data stream according to the retrieved production rules.

Abstract: A memory subsystem includes multiple different caches configured for different types of data transfer operations between one or more processing units and a main memory. The different caches can include a first general cache configured for general random memory accesses, a software controlled cache used for controlling cache operations for different processing devices accessing the same data, and a streaming cache configured for large packet data memory accesses. An arbiter may be used for arbitrating requests by the multiple different caches for accessing the main memory.

Abstract: A storage server uses a semantic processor to parse and respond to client requests. A direct execution parser in the semantic processor parses an input stream, comprising client storage server requests, according to a defined grammar. A semantic processor execution engine capable of manipulating data (e.g., data movement, mathematical, and logical operations) executes microcode segments in response to requests from the direct execution parser in order to perform the client-requested operations. The resulting operational efficiency allows an entire storage server to be collapsed in some embodiments into a few relatively small integrated circuits that can be placed on a media device's printed circuit board, with the semantic processor itself drawing perhaps a few Watts of power.