| 摘要 |
PURPOSE:To set up an access to a variable dynamically allocated to a memory as an event detecting condition in an emulator in a microcomputer. CONSTITUTION:A PC range comparator 11 compares a PC range data value 30 with an instruction fetch address data 35 and outputs a PC range comparing signal 35 and a differential unit 12 inputs address latch data 33 and a base address 36 and outputs differential data 37. Then an offset comparator 14 inputs the data 37 and an offset value 31 to compare them with each other and outputs an offset comparing signal 45 and a data comparator 13 inputs data latch data 34 and a data value 29 to compare them with each other and outputs a data comparing signal 13. Consequently, a reading or writing access to a local variable dynamically, allocated to the memory can be detected. |
