EDIT: but if the DS's bandwidth and latency are > the minimum requirements of the standard link cable it would theoretically be possible, no?
Wario64 said:
I think the wireless part is what's barring the ability to play GBA games online..
This is the way I always understood it.
The GBA wireless adapter has a different bandwidth than the normal GBA link cable so games would need to be optimised for it and that is why only specific newer games were prepared.
If the DS has a fatter bandwidth for wireless link up all they have to do is convince the GBA cart that it is being hooked up properly. As long as the data transfer speed is fast enough to handle it. The DS's wireless capabilities would have to be capable of handling what the original GBAs cable handeled in terms of transfer.