Hello, I'm new in KEIL sw. As I can see I can include REG51.h file in only one C or ASM file in the whole project... is that possible? Best regards, Branislava
No, that's quite definitely an incorrect observation. You may have to be careful not to #include it more than once in a single translation unit (i.e. one source file), but other than that, there's no such limitation. If this doesn't agree with your observation, please describe those observations in more detail.