Resources Contact Us Home
Data processor capable of handling an increased number of operation codes

Image Number 4 for United States Patent #6339821.

A data processor is provided to increase the number of instructions it can handle, even with a large number of operands required for the instructions. The data processor comprises a decoding circuit (1) extracting bits (a1, a2) of an instruction as first operand fields and decoding an operation code, using the remaining bits (a4); an operand-field storage portion (3) including a first operand-field storage portion (3a) storing bits (a1, a2) obtained from the decoding circuit (1) via a selector (2), and a second operand-field storage portion (3b) storing a second operand field obtained on the basis of those bits (a2); and a data processing portion (5) receiving the first and the second operand fields from the operand-field storage portion (3) and processing data in registers designated by the first and the second operand fields.

  Recently Added Patents
Digital fine delay processing
Cooking brush
Method of inspecting wafer
Encryption using alternate authentication key
Bisphosphonate compounds
Selecting one of a plurality of print modes based on pixel coverage of a document
Data distribution unit for vehicle entertainment system
  Randomly Featured Patents
Re-configurable antenna and a method for acquiring a configuration of a re-configurable antenna
On-line directory assistance system
Die for extruding toothed helical members
Generating and amplifying differential signals
Flame resistant cloth
System and method for encoding and decoding serial signals formed by a plurality of color lights
Drill bit with covered ring nozzle retainer
Apparatus and method for measuring optical characteristics of an object
Angularly resolved scatterometer
Personal identification number recovery method