Path: utzoo!attcan!uunet!cs.utexas.edu!sun-barr!apple!phil From: phil@Apple.COM (Phil Ronzone) Newsgroups: comp.sys.mac.programmer Subject: Re: System 7.0 Q & A Keywords: Low Memory Globals Message-ID: <31564@apple.Apple.COM> Date: 24 May 89 19:20:06 GMT References: <2086@ccnysci.UUCP> Organization: Apple Computer A/UX Group Lines: 21 In article <2086@ccnysci.UUCP> alexis@ccnysci.UUCP (Alexis Rosen) writes: >Why can't we have a little program that takes a chunk of memory and boots a >new Mac inside of this memory? In fact, you could probably boot System 6.0 >on this virtual Mac, but I won't push things. (You could probably also run it >in 24-bit mode while leaving the rest in 32-bit mode.) This would solve all of >the compatability problems with one stroke. Well, in way you have that when you use A/UX. Some questions that arise when this is done: Do you have a sophisticated enough virtual memory manager? Assuming this is pre-emptive (no?) how do you control access to non-rentrant toolbox code? And so on ... Rick Daly can tell you more gory details ... +-----------------------------------------------------------------------------+ |Philip K. Ronzone, Apple Computer, 10440 Bubb Rd, MS 58A, Cupertino, CA 95014| |{amdahl,decwrl,sun,voder,nsc,mtxinu,dual,unisoft,...}!apple!phil | +-----------------------------------------+-----------------------------------+ | All "IMHOs" disclaimed and copyrighted. | Self defense is a human right ... | +-----------------------------------------+-----------------------------------+