| 摘要 |
PURPOSE:To speed up the processing overall speed, by execution of the operation processing section for the main and sub-program alternately with a given period, when the execution request of sub-program is caused while executing main program. CONSTITUTION:The main program memory section 11 stores the main program constituted with a series of microinstruction, and the sub-program memory section 12 accompanied with the main program is constituted with a series of microinstruction. A series of imcroinstruction stored in the memory section 12 with the instruction interpreting section 14 is sequentially read out and converted into processing code, and various operational processings are executed at the operation processing section 15 depending on the processing code. When the execution request for the sub-program is caused while the processing section 15 executes the main program, the interpreting section 14 reads out the microinstruction from the memory sections 11 and 12 alternately for a given period and converts it into the processing code, allowing to speed up the overall processing speed. |
