Hi Friends, I have a doubt that the xdata declaration is using the memory of 89c52 chip memory itself,or it needs any external memory .I used an array as xdata in 89c52 based project because i have to store a large data . Is it possible without any external memory ,such chips are not present in my hardware. I need your valuable help.
HI friend, What is Arghmel?,how can i declare xdata in AT 89c52.
"What is Arghmel?"
It's Erik's little joke - he doesn't like Atmel, so he calls them "Arghmel". That's all.
"how can i declare xdata in AT 89c52"
Exactly the same way that you'd define it for any other 8051 derivative! The C51 compiler does not have any device-specific options for this:
http://www.keil.com/support/man/docs/c51/c51_le_memtypes.htm