Hi! Last time the title was mistakenly written as "and". My query is: I have read the code from AT89C51RD2 and dumped it into a file. This code worked well when burnt in other AT89C51RD2 controllers. Later i got its source code. Now i am generating the hex file. This hex file is different from one i copied from the controller. The generated file is in Intel Hex Format (i.e. starts with 0x3A) whereas the coped hex file starts with 0x02. What is the difference between two hex files?
Why didn't you provide a link to the previous thread.
Please also provide a link from that thread to here - so that people don't waste time in that thread!
"the coped hex file starts with 0x02"
An Intel Hex file is a pure ASCII printable text file - if it contains anything like 0x02, it is not an Intel Hex file!
Thanks for the reply but i still have some confusions. When i view the file "with 0x02 at start" in UltraEdit, it clearly shows the character strings used in the source code. The same strings can be seen on two row LCD when controller is inserted into the circuit. However when i view the hex file generated by uV3, i cann't see the same character strings. If an Intel Hex file is a pure ASCII printable text file, then why i cann't see the character strings?