🚀 go-pugleaf

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.  In the future,
I would expect to see a rewrite of the OS to allow for up to 32MB, but
right now it is not feasible.  So, in general 8MB is the limit, period,
for any of the 020 or 030 machines.  (I believe that the reason for the
8MB limit is that the ROM routines are mapped beginning right after this
8MB ceiling.)

Unless of course you use A/UX.  I don't believe that it has this restriction,
allowing up to 32MB of real memory.  I remember someone recently posting a
message saying that they were using 4MB SIMMs (a set of 4 of these) giving
them 16 MB, all of which was usable by A/UX, but the Mac II he was using
just ignored the upper 8MB.  Note that this didn't produce any problems.

-Michael



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