On 2025-10-16 3:11 p.m., Steve Lewis via cctalk wrote:
For cars, I think most states offer the "classic car" designation at 20 years?
But home/personal computer is just one slice of all this. VAX/VMS was another established OS (around mid/late 1970s). CP/M (to my knowledge) never broke the "64K barrier" -- I'm not sure if QDOS did either, but it was at least a good enough baseline for PC/MS-DOS to later evolve towards the more organic .EXE format.
I think CP/M for the 68000 broke the 64K barrier. Not having sub-directories was the real limitation. The 6809 was needed for a better OS's than CP/M.
- Steve Ben.
