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Loop processing system for program controller

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专利汇可以提供Loop processing system for program controller专利检索,专利查询,专利分析的服务。并且PURPOSE:To enable high speed D0 loop, by adding one bit designating the presence of address alteration in a DO loop to a data operation instruction and providing a register storing an address. CONSTITUTION:If an instruction fetched from a program memory 6 to an instruction register 7 is a DO instruction, a program counter 4 and a register 5 are separated to store the address of the DO instruction in the register 5. The processing instruction in the DO loop is sequentially executed and the instruction comes to an address m-1. The final bit of the data operation instruction in the DO loop is set to 1 in advance. Thus, an address calculation circuit 8 folds the progress of the program to the address assured in the register 5, and unconditional jump of the DO loop to the head instruction is executed in parallel with the data operation of the instruction of m being the final instruction of the loop, allowing to reduce the machine cycle required for the execution of the unconditional jump.,下面是Loop processing system for program controller专利的具体信息内容。

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