On the Access site, you can download an Garnet OS Emulator. The emulator is called Janeiro, which was announced by PalmSource already two years ago and emulates both ARM and 68k. Finally, it has now been published. But it doesn’t include Garnet and Cobalt ROMs, but a Linux kernel on which runs Garnet OS 5.5 (in the launcher it says Palm OS Garnet 5.50).
You can download a TAR GZ archive (20 MB) which includes a Linux and a Windows version. The emulator is slower than other Palm simulators (the simulator runs Palm OS native on your x86 computer, whereas Janeiro is a true ARM emulator). The interface is similar to Palm OS 5.2 or 5.4, but it has other fonts and uses the untypical display resolution of 240×320. I couldn’t install Palm applications (at least not by Drag & Drop), and it only contained the standard PIM applications, preferences and one test application.
Other tests and information will follow soon.