.5u and .6u might seem to be obsolete to digital design. But they work well for analog design. Sometimes the latest process technology doesn't benefit analog/mixed-signal design.
All 4 5 and 6 inch wafer fab are at full cacity now because high demand on analog parts. Some time these analog parts need small logic operation. that is why I am looking for these old libraries. Anyone has 0.8 or 1.0 1p2m?