> Spoiler: Yeah, they were Y2K compliant. The OSes were, but what about the apps in common use? It's the same thing on ancient microcomputers: As far as I kno

> Spoiler: Yeah, they were Y2K compliant. The OSes were, but what about the apps in common use? It's the same thing on ancient microcomputers: As far as I know, the C64's ROM-based OS doesn't care about the date at all, but various application software likely did, and would probably get very confused at two-digit years which began with a first digit less than 7.