I always wondered that myself, but 'rep movsb' sounds like a great solution. Back when I was still programming assembly, there were blitters (https://en.wikiped

I always wondered that myself, but 'rep movsb' sounds like a great solution. Back when I was still programming assembly, there were blitters (https://en.wikipedia.org/wiki/Blitter https://en.wikipedia.org/wiki/Blitter) to copy large chunks of memory.