Allen Briggs wrote:
However, look at the hpcarm and hpcmips ports for handhelds that are supported to one degree or another. There are plenty of ARM/StrongARM and MIPS handhelds out there that do use an MMU...
That's true but the original question was about "low end PDAs" like Palm M. The older Palm models like "Palm M" oder "Palm III" have a Motorola Dragonball CPU which does not have a MMU. Another issue could be the clock speed which usually is about 16 or 33 MHZ for the Dragonball compared with >200MHz for MIPS or StrongArm.