| 摘要 |
PURPOSE: A microcomputer development system is provided to maintain and upgrade rapidly emulators distributed in the field by directly porting upgraded firmware data to a flash ROM. CONSTITUTION: A microcomputer development system comprises a PC debugger(100), a communication line(200) and an emulator(300). The emulator(300) includes a main controller(310), an address/data bus(320), a flash ROM(330), and a static RAM(340). The PC debugger(100) is connected to the emulator(33) via the communication line(200), and the main controller(310) is connected to the flash ROM(330) and the static RAM(340) via the address/data bus(320). The flash ROM(330) includes a boot firmware area(331) and a loaded firmware area(332). The static RAM(341) includes a loading firmware area(341). The boot firmware area(331) is allocated to low address of a memory, the loading firmware area(341) allocated to high address, and the loaded firmware area(332) allocated between the two firmware areas(331,341). The main controller(310) uses the static RAM93400 as a read/write data area while performing the firmware of the flash ROM(330).
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