MULTIMEDIA COPROCESSOR CONTROL MECHANISM INCLUDING ALIGNMENT OR BROADCAST INSTRUCTIONS

摘要

PROBLEM TO BE SOLVED: To provide a better method for more clearly representing instructions for coprocessors.SOLUTION: A processor-based system 22 includes a main processor 24 and a coprocessor 26. The coprocessor 26 handles instructions that include opcodes specifying a data processing operation to be performed by the coprocessor 26 and a coprocessor identification field for identifying a target coprocessor for coprocessor instructions. Two bits indicate one of four data sizes including a byte (8 bits), a half word (16 bits), a word (32 bits), and a double word (64 bits). Two other bits indicate a saturation type.