Very accurate Game Boy Advance and Nintendo DS emulator. (Its real name is
no$gba, but for technical reasons the package and binary are called
noUSDgba.)

For your convenience you may want to copy or link your ROM images to
~/.noUSDgba/SLOT, a directory that will be created when you first run
no$gba.

This is the freeware version without debugging facilities. Debugger version
are available from US$15 for personal use or US$750 for commercial use
at http://nocash.emubase.de/gba-dev.htm

This package uses WINE to run.