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Error 65 on the C8051F120

William To

Hello,

I am debugging with uVision 3 on the C8051F120 uC (on Silabs' development board) with SiLabs's debug driver on uVision. Whenever I try to do single step, the debugger returned the following message:

*** error 65: access violation at D02:0xCB : no 'read' permission

After this error basically the peripheral windows no longer update their values and it is impossible to see whether I have written the correct code. In simulator I don't see this error.

I tried using the MAP command like this but still not working:

MAP D02:0x00, D02:0xFF read

Is there anything I can do?

Thanks very much and Best Regards

William

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