You use Atmel C51 ? e.g AT89C51/52,W78E5X?
Is there any command MOVC A,@A+DPTR (93H)?
From an article I read, there is a method to make use of above instruction to retrieve the ROM content,
even you have set the "Lock Bit". :roll:
Solution is use “83H” MOVC A,@A+PC to replace “93H”MOVC A,@A+DPTR.
This is so call Soft decrypt, Soft Tamper???
Is there any command MOVC A,@A+DPTR (93H)?
From an article I read, there is a method to make use of above instruction to retrieve the ROM content,
even you have set the "Lock Bit". :roll:
Solution is use “83H” MOVC A,@A+PC to replace “93H”MOVC A,@A+DPTR.
This is so call Soft decrypt, Soft Tamper???