| 摘要 |
PURPOSE:To reduce a program developing cost, by using an optional part of an existing program, as a subroutine. CONSTITUTION:In a memory CS, programs A, B, etc. are stored, contents of a register CSAR become an address and access the memory CS, and each step of a read-out program is fetched to a register CSR, and is inputted to an instruction decoding and cycle controlling circuit CNT. The contents of the register CSAR are increased in order by a +1 circuit, and each step of the program is inputted to the circuit CNT through the register CSR. Each instruction of this input program commands a prescribed operation of a data from an MPU input bus Bin, etc., to an operator ALU. A result of operation is sent out to an MPU output bus Bout through a register REGd. |
