The Linux Agenda VR3 ran on two AAA batteries and used a 66MHz NEC VR4181. That's a 32/64bit MIPSIII chip. The VR3 only used it in 32bit mode, but you could tak

The Linux Agenda VR3 ran on two AAA batteries and used a 66MHz NEC VR4181. That's a 32/64bit MIPSIII chip. The VR3 only used it in 32bit mode, but you could take over the system and enable 64bit mode. It was little-endian only, unfortunately.