todo:

- lots of edge case testing
- make sure the error codes are adequate
- force malloc to abort if returning null

devices:
- slot 1
- slot 2
- nvram
- memory
- ctl regs (twl)
- nand (twl)
- sd (twl)

filesystems:
- DONE / devfs
- fat

formats:
- srl
- gba
- potentially newer stuff, like 3DS?

gui:
- everything

documentation:
- everything