*IC masks are protected as of 1984 (mask work is essentially copyright for the d...

		userbinator on Dec 15, 2020 \| parent \| context \| favorite \| on: Build an 8-bit CPU from scratch IC masks are protected as of 1984 (mask work is essentially copyright for the die), but the 6502 predates that. ...and the copyrights for masks are much shorter than traditional copyright - only 10 years in the US: https://en.wikipedia.org/wiki/Integrated_circuit_layout_desi...