Path: utzoo!mnetor!uunet!mcvax!enea!tut!santra!jmunkki From: jmunkki@santra.UUCP (Juri Munkki) Newsgroups: comp.sys.mac Subject: Re: Tidbits from InfoWorld Message-ID: <12677@santra.UUCP> Date: 8 May 88 07:31:33 GMT References: <51612@sun.uucp> Reply-To: jmunkki@santra.UUCP (Juri Munkki) Organization: Helsinki University of Technology Computing Centre, Finland Lines: 27 Keywords: MMU, 68851 Summary: I don't want to buy more RAM... In article <51612@sun.uucp> chuq@plaid.Sun.COM (Chuq Von Rospach) writes: > Also, the likely minimum memory configuration supported with this > release will be 2Meg. They better hope SIMM prices drop.... You've > been warned, start planning that memory upgrade now, folks. you're > going to want it.... >Now, go start putting money away for that memory upgrade.... I have a Mac II with 2MB RAM and I'm not planning to upgrade the RAM, when I run out of memory. The 68851 exists at least on the local apple pricelist and the student/developer price is not too high. I have about 16 MB of free space on my HD and I'd be willing to put aside about 4 to 8MB as a swap space. I don't think writing a simple virtual memory system would be too hard. I am not familiar with the 68851, so I might be wrong... If the MMU supports running in the virtual memory space while the processor is in supervisor mode, installing a simple page swapper as an INIT doesn't seem too hard. If the processor has to be in the user mode, some extra stuff would have to be patched. Of course if I did this myself (or someone else outside apple did it), I wouldn't be able to do any protection. So, when is Apple going to use the 68851? It shouldn't be too hard to do. Juri Munkki jmunkki@santra.hut.fi jmunkki@fingate.bitnet P.S. Is there a way to send mail to Delphi? (the digestible one :-)