| 摘要 |
PURPOSE:To improve the working speed of an information processor by detecting a machine word instruction series having a high access frequency to add it to an instruction set as a machine word instruction and replacing said instruction with the old machine word instruction series. CONSTITUTION:A control part 2 extracts a machine word instruction out of a main memory 1 and executes it by the corresponding microinstruction stored in a control memory 5. At the same time, an access frequency counting part 4 for machine word instruction address traces an executing address and recognizes a machine word instruction train received accesses higher than a prescribed frequency as a pattern and regards it as a candidate of machine work instruction. An instruction synthesizing part 6 decides the code of a new machine word instruction and sends it to a machine word instruction writing part 7 and a microinstruction writing part 8. The part 7 replaces the machine word instruction train set to the main memory 1 before synthesization with a new machine word. While the part 8 writes the microinstruction train forming a synthesized machine word instruction train onto the memory 5.
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