He opened the MP-3 project. The schematic materialized—a constellation of logic gates, op-amps, and a custom FPGA. But it was broken. Lines were missing. Components were labeled ??? .
This is the main reason people still download this. If you are reverse-engineering a board designed in the early 2000s, having the original Protel libraries is a lifesaver. The footprints were generally reliable, though the 3D viewer is primitive by today's standards. Protel 99 Se Download
Once you've downloaded Protel 99 SE, follow these installation instructions: He opened the MP-3 project
This IS the Patch for Protel99se SP6 for Win7/8/10. - EEVblog Protel 99 Se Download
It was a pioneer in integrating schematic capture, PCB layout, and simulation (SPICE 3f5) into a single environment called the Design Explorer .