| 摘要 |
<p>PURPOSE: To effectively utilize a program bus and an instruction code by constituting a data transfer instruction for debugging to be used at the time of transferring operational data to a debugging register of a code to show the transfer origin or the transfer destination of the operational data in addition to the read/write signal of the operational data. CONSTITUTION: The instruction code of a debugging program is sent and loaded to an instruciton register 3, and the instruction code is sent to an instruction decoder 4. The instruction decoder 4 sends a read signal to an accumulator 10, a data register 9, an address register 7 and a program counter 1, and also, it sends a data transfer instruction for debugging. Thus, the address of the program counter 1 or the operational data of the address register 7, the data register 9 or the accumulator 10 is sent and stored to the debugging register 11 through the data bus.</p> |
