🚀 go-pugleaf

In article <90725@felix.UUCP> kehr@felix.UUCP (Shirley Kehr) writes:
>In article <6514@bsu-cs.UUCP> mithomas@bsu-cs.UUCP (Michael Thomas Niehaus) writes:
><In article <2615@osiris.sics.se>, ollef@osiris.sics.se (Olle Furberg) writes:
><>  How many Mb (maximum) do I get with the Virtual-init on a MacIIx/SE30 ?
><> Someone told me that I can't get more than 8 Meg. Suppose I have 8 Meg 
><> HardWare memory, is Virtual of any use?
><>  If it is a limit for Virtual, is this a general limit for the 030-MMU?
> 
><This has been discussed before:  Currently, the Mac operating system
><limits you to only (and I choke on only) 8MB of memory.
>
>I thought the question was about the Virtual init. I presumed that Olle
>was either using A/UX or looking ahead to the future when the 8Mbyte
>limit didn't exist.
>
>I suspect the answer is that Virtual might not access more than 8 Mbytes
>today, but that there is no reason for any limit as soon as it is usable
>by the Mac. They already did a second version of the init for 030 machines
>so they seem committed to keeping up. As to A/UX support, I suspect you'd
>have to ask them.

Actually, Virtual does not work with A/UX, which uses its own virtual
memory scheme.  Both Michael and Shirley are correct that the limit of
8 megabytes RAM is a limit within the operating system, and NOT with
the Virtual software from Connectix.  So, the answer to Olle's question
is that Virtual is utterly useless to him, RIGHT NOW, if he already has
8 megabytes of physical memory.  All he'd be doing is making a perfect
copy of physical memory on his hard drive.  That brings up a couple of
potentially interesting possibilities for crash-recovery, but I won't
get into that now. :-)

Connectix is indeed dedicated to continuously updating Virtual to take
advantage of all improvements to the Mac, in both hardware and software.
Virtual currently runs on all 68020 and '030 machines, i.e. Mac II, IIx,
IIcx, and SE/30.  As soon as the Macintosh operating system supports
the use of more than 8 megs, it's quite likely that Connectix will be
there with a version of Virtual that can give you as much memory as you're
willing to give it disk space. :-)  Good thing magnetic SCSI storage is
cheaper than DRAM! :-)

Calling Connectix is definitely a good idea if you want more information
about what's likely to be available when.  Their number is 415-324-0727
(Pacific Daylight Time).  Unfortunately, Connectix is not yet on the net.

Disclaimer: I am not involved with Connectix except as an EXTREMELY happy
customer.  I keep in touch with them, so if you have any questions, feel
free to ask me.  If I don't know, I'll find out.

-- 
Mark H. Anbinder                                ** MHA@TCGould.tn.cornell.edu
NG33 MVR Hall, Media Services Dept.             ** THCY@CRNLVAX5.BITNET
Cornell University      H: (607) 257-7587 ********
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