Does anyone know of a home brew app or utility that will tell you how much memory is available in the DS, including any RAM from an option pak or other slot 2 device? I have the extended memory cartridge from the Opera NDS Browser and want to see if other apps can actually see/use it.

 

this is the only program i know that can affect slot 2s
http://dl.qj.net/memtestARM-v0.03-Nintendo...22085/catid/220
i think you can set the speed of it too! ^.^ hope it helps

 

If you have any form of slot-2 RAM, you've got enough. Even if you don't, there's a chance it will be able to at least boot up fine, at which point you can just type "df" and hit Enter and you'll be fine. I don't have a slot-1 device, so I don't know if it will boot up without slot-2 RAM or not. Alternatively, you could search around the DSLinux forums for the special version Sonny_Jim made that tries to maximize the amount of available RAM for slot-1 users.