the normal gba link cable doesn't have the VCC and ground pins
so i'm using this guy for its connector and basically nothing else. i want to attach something else on the other side of those pins, and it needs power
@onfy yep, used for the wireless adapter and (inexplicably) the gc->gba cable
also this is extremely cursed but it's either 3.3v or 5v depending on what's in the cartridge slot. because unfortunately it has to be because of how gb games worked
@monorail@onfy ah right, the wireless adapter. Wikipedia had me confused due to calling the link cable port the "External Extension Connector", I thought that was the weird ass power/headphone port
@noiob@onfy i don't know why it needs power from the gba when i know the gamecube provides power over the controller ports. and afaik it's only doing voltage regulation in there anyway
@monorail@onfy ah, it's not possible to test because the battery is required for it to boot, but I'd guess that it's some kind of "keep the GBA alive while it's wired anyways" thing
@noiob@onfy pretty sure it's not this because "gba->gc link cable covers the charge port on the sp" is a common annoyance people bring up, sometimes going far enough to modify the cable to make room for the charger (because the only thing stopping you from charging at the same time is plastic)
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@noiob @monorail That could be interesting, it sucks when your controller dies.
You can remove original GBA batteries while it's on...