WorkPad z50

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The IBM WorkPad z50 is a NEC VR4121 based PDA. It comes with WinCE in flash.

It features

  • 131Mhz NEC VR4121 SoC
  • NEC VR4171A Companion chip
  • 16MB RAM (Expandable to 48MB)
  • 4MB Video RAM
  • ITE IT8181F Video controller
  • Rockwell RP336LD Modem

An unmaintained port of Linux ( is rumored to work on the z50.

There is a netbsd ( port available.

Useful info and datasheets on various parts used in this machine can be found at