EXPANDED FUNCTIONALITY OF PROCESSOR OPERATIONS WITHIN A FIXED WIDTH INSTRUCTION ENCODING

摘要

An apparatus for executing fixed width instructions in a multiple execution unit system has a means for fetching instructions from memory 24, and a decoder 26 for decoding each fetched instruction in turn. A determination is made as to whether each decoded instruction includes a portion to fetch a locally stored instruction from a local store 28. If it does, the locally stored instruction is fetched and the decoded and locally stored instruction portion are executed 30.