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actually this is in reference to the thread that i have already created about declaring two dimensional arrays I have configured the the model to Xdata and the change that i have made is only of declaring a character array of a size more than 100 Yes i am going to use it to store strings but that is later isnt it .There is a problem in the declaration itself
After looking at the hex file, I found the problem! I lost interest in looking at the hex file! Seriously though, your micro has 2048 bytes of xram so your array cannot be much bigger than your 100 * 20. Firstly, where has the linker put your array? What memory model have you selected? Tiny? - that's definitely not going to work. Read up on the linker output, it tells you many things. Secondly, does the 89c51rd2 need a bit set to enable the xram? I know aduc834 does and a 89c668 does. Read the datasheet on your device. Putting the hex file on the forum was a waste of time! If you'd put the linker listing, that would have been much more helpful.