HEX Output

Hello, I am using uV2 to develop my system. The target is an AT89C52 (ATMEL). I use CEIBO debugger in addition.

When I have compiled it and ran it with the emulator, everything works... I use both xternal and internal clk, that's ok anyway... The same resulted when I emulate with the HEX output too...

But the problem is, when I program to the MCU, it fails... The circuitry and firmware is proved to be correct... and I have emulated again and again with the emulator both xternal and internal clk... both KEIL code and HEX...

What's wrong then?

Thanks

Panda
CUHK EE

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