On 03/17/2016 11:59 AM, Noel Chiappa wrote: > > Each segment > > is in it's own address space; any memory reference was, per force, a > > segment number and offset. > > In this last sentence, is that referring to Multics? > > If so, that is exactly how the x86 _hardware_ works,
He might have been referring to how the GE processor mapped each segment to physical memory on its own while the x86 maps the segments into a single 2^32 byte linear address space first and then maps that to physical memory. The x86 got this one wrong, in my opinion, as it means you can't have full-sized segments if you have more than one effective segment. Or if you can do it, it's going to be a painful process of keeping multiple versions of the segment table that maps in different windows of the full-sized segment you're trying to access.
