The weirdest thing about PalmOS architecture was how they never really ported it to ARM processors, so on ARM devices it just ran 68k code via an emulation laye

The weirdest thing about PalmOS architecture was how they never really ported it to ARM processors, so on ARM devices it just ran 68k code via an emulation layer. (I believe there was a way to load ARM-native blobs which allowed some ability to take advantage of the faster CPUs in the later devices.) Evidently an ARM-native version of PalmOS (PalmOS 6, based on beOS of all things) was eventually released, but somehow it never made it onto any real devices.