Pokemon clock-based events help

Hi. I need help for my pokemon game sapphire, ruby and emerald. When i turn on it tells me the internal battery has run dry and clock-based events will no longer occur. Can you tell me how to make clock-based events occur? post a step-by-step list please and it will be appreciated. Thank you and good-bye. P.s I use Visual boy advance. ??? Edit: Sorry, i put in wrong section. Very sorry.

Options>Emulator>Real time Cock.

I did that but still didnt't work. :'( Any more ideas? :-\

Did you tick it? It works fine on Ruby. What version of VBA? Also, check out https://www.romulation.org/forum/index.php?topic=6326.0 later.