The older Palm Pilot
models where the "PalmPilot" with 516Kb ram and the "PalmPilot Pro" with 1Mb. Besides the limited memory
, they only had 2bit grayscale and the Operating System
burned in ROM
, making upgrades impossible. Almost all new software still run on these old machines.
A bit of do it yourself soldering can expand the memory to 1Mb and 2Mb for PalmPilot and PalmPilot Pro respectively.