This article applies to every architecture and os transition that isn’t backwards compatible. PDP->intel meant we can’t run pdp code (oh wait many banks now ju

This article applies to every architecture and os transition that isn’t backwards compatible. PDP->intel meant we can’t run pdp code (oh wait many banks now just emulate PDPs running cobol) macOS: 68k->ppc, ppc->intel, and now intel->arm. macOS <= 9 to X Etc