Go to 'Options - Link -> Joybus Options.'.Select the location of 'gba_bios.bin', tick enable and click OK.Open the emulator, go to 'Options - Emulator -> BIOS Files.'.Then load either of the following games mentioned above (you need the Tingle Tuner from Tingle on Windfall Island in WindWaker to use the GBA function).Change the 1st port from Standard Controller to GBA (2nd port if you're playing WindWaker).enter the configuration menu and select the Gamecube tab (with latest versions, you will need to go to the controller configuration) Once you've got 'gba_bios.bin', put it in the same folder as VBA-M.As it's against 'Da Rules' of the forum and copyrighted property of Nintendo, I will not be providing a download for 'gba_bios.bin' (you'll have to use a search engine, like Google to find it or dump it from your actual Gameboy Advance or a Nintendo DS using Homebrew).Then extract them to separate folders using file archiver utility (like either WinRAR, WinZip or 7-Zip).Download Dolphin from the official site here and VBA-M from here.use either Wine or virtualization software (such as either VMWare or VirtualBox).

This tutorial will be for Windows only, if you're using another operating system.

Dolphin emulator mac control setup