Hi all, I am using P0 and P2 for I/O but I dont know which Keil function for reading and writing to a specific address. I think this problem can be solve by( :) ?) MOV DPH, 0xFF MOV DPL, 0xFF MOVX A, @DPTR Pls help me for this problem by C language for Keil Thanks and best regards bocphet
XDATA accesses are generated for variables defined as 'xdata' For memory-mapped IO, take a look at the _at_ keyword extension.