| 摘要 |
PURPOSE:To execute program debugging including interruption processing under a condition similar to that of a user system by reading out an interruption vector based on an interruption signal and executing interruption processing in a jumped address. CONSTITUTION:When an interruption request is generated in an interruption timing generator during the fetching and execution of a program in an internal memory 3 from/by an emulation processor 4, an interruption controller 12 outputs an interruption signal, the inverse of INT, to the processor through an AND gate 23. At the time of receiving the interruption, the processor 4 activates a signal, the inverse of INTA, and saves a current program counter or the like. Then, the processor 4 reads out an interruption vector from an interruption vector storing part 13, outputs a jumped address signal in accordance with the interruption vector and fetches the interruption processing program from the internal memory 3 to execute it. |
