> This system seemed practically designed to generate pointer aliasing, We did not care about that then. Primarily because SMP and threads were simply not a t

> This system seemed practically designed to generate pointer aliasing, We did not care about that then. Primarily because SMP and threads were simply not a thing. You might also note that any implementation of mmap(2) provides the exact same facility. > permanently limited the architecture to one megabyte of addressable memory It limited the generation. The architecture has obviously moved well past that. Now you can complain that though you have 64 bits only 48 are routed out to pins on your board. > The shenanigans to get DOS machines to use more than 640k (which the application had to share with the OS and drivers!) are stuck in my memory. hah. Program on a mainframe in 24bit mode sometime. That's a real treat.