On Tue, Jun 15, 2004 at 09:53:02AM -0700, perdurabo wrote: > > Panther on a G5 does run a 64 bit kernel, however it is important to note > > that the same Panther runs on the 32 bit G4 and the 64 bit G5. In other > > words, most of the OS is NOT 64 bit code. > > So I wonder if this means that a "default" OS X install on a G5 is > different form that of a G4 (eg. xnu is a "different" kernel in each > case?). I guess it's a "wait and see" thing. I wonder what further > optimizations can be done via a kernel recompile. Can't wait to get > some time to start hacking on the Darwin kernel again. It was a blast > fixing that stupid clamshell problem a couple years back.
Indeed xnu is diferent on s G5. I do not know if it is different between G4 and G3 systems though. > > Apple's done this before--when they introduced the PowerPC in the first > > place, it ran a PowerPC kernel and mostly m68k OS in emulation mode. It > > then happened that over the next few years, Apple introduced more > > PowerPC-only components and began shipping things that you'd notice > > running slowly as diskspace-hogging fat binaries which had both native > > PowerPC and m68k code in them. > > Yeah, I fully remember this. But they really did the best they could, > despite certain machines being virtually unusable. I remember the PPC > 601 machines being virtually useless until they mostly got rid of the > legacy 68k stuff, as it was too slow for proper 68k emulation and most > folks opted instead for a "faster" 040. It's a bit different now since the PPC 970 can run 32 bit PPC code just fine. =) _______________________________________________ EUGLUG mailing list [EMAIL PROTECTED] http://www.euglug.org/mailman/listinfo/euglug
