Basilisk II is an Open Source 68k Macintosh emulator.

Release notes:

Test 14 – IR keyboard support! At least if you’re on 3.52 or older. I forgot Sony doesn’t load IRDA.PRX in games anymore. I’ll add code for that on the next version. Tested in 3.52 M33-4 with Targus and Palm keyboards. Now I’m extra mad the Slim doesn’t have an IR port. 😉