VisualBoyAdvance-M

Yeah. If you want linking features, compile the bgk-link branch, though be warned: it currently does not do GB/C linking, only GBA.

 

hoping to play 4 swords on GBA between computers.

Branch, aka, development tree.

 

Trunk is the main branch which all official builds are compiled from.

 

so i am assuming that means it is disabled in this build.

I do not understand what you mean by disabled in the Branch. I apologize if this is something simple i am over looking, please explain.