| 摘要 |
PURPOSE:To return to an original main program after information is collected and to trace an internal condition, by interrupting with a micro instruction which can be designated from the outside or a softwear and performing information collection through jumping from the main program to a subprogram. CONSTITUTION:An output of an address generating circuit 1 is input into a micro mu-program control device as an address, and a control memory 2 which stores the mu-program, a selecting circuit 6 which selects the output of the memory 2, and a control block 7 are installed. In addition to the main program, a sub-mu-program is also stored in the memory 2. Then, coincidences of the output of the circuit 1 with a trap address and addresses of the sub-mu-program complete registers 8 and 9 are collated by address collating circuits 10 and 11, respectively, and added to the circuit 6. Moreover, the output of a sub-mu-program leading register 13 and the address of the register 8 are added to the circuit 6 through jump mu instruction generating circuits 12 and 14, and an interruption is executed to the mu instruction from the outside or softwear. |
