site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com * has a 32-bit kernel address space regardless of host CPU; * has some system libraries optimized for the host CPU, which includes taking advantage of 64-bit operations when on G5; * supports 32-bit user address spaces on any CPU, and additionally 64-bit user address spaces (depending on whether the binary is 32/64-bit) on G5. Accurate, but not complete. The item you're missing is: * only a small subset of system libraries are available to 64-bit programs (basically you get System framework and anything that it depends on) ps This point is actually described quite clearly on our public web site. The enhanced kernel, plus a 64-bit version of libSystem, let command-line programs, background daemons and network services directly manipulate up to 16 exabytes of virtual memory, more than four billion times the memory addressable by today's 32-bit applications. -- <http://www.apple.com/macosx/tiger/64bit.html> S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... At 12:34 +1300 28/10/04, Koryn Grant wrote: Is this an accurate summary? This is enough to get the majority of traditional UNIX programs running 64-bit, but not for 64-bit GUI programs. This email sent to site_archiver@lists.apple.com