Yokemate of Keyboards
Posts: 4977 from 2009/1/28
From: Delaware, USA
Quote:Andreas_Wolf wrote:
> it still looks like the evolution of one ISA to me. There is a much greater degree
> of backward compatibility here then say differing Power families. But I am sure
> you will contest that. ;)
Absolutely
PPC64 and PPC32 are much more alike than x86-64 and x86(-32) or AArch64 and AArch32. The reason for the good backward compatibility in the latter cases is the fact that these 64-bit processors separately implement the 32-bit ISA in addition.
Good answer.
A fine line, but valid.
"Never attribute to malice what can more readily explained by incompetence"
