Subject: finder and MMU
To: <>
From: Rick C. Petty <pett0019@gold.tc.umn.edu>
List: port-mac68k
Date: 12/21/1995 16:23:38
On Thu, 21 Dec 1995, Chris Mason wrote:
> All these capabilities are in ROM. The finder uses them. Segment loader,
> process manager, all that's in ROM. You would still have use of them even
> if the finder wasn't there. The finder's simply a glorified app.
What about the Finder Icon Suites? According to my reference, it's
loaded with the Finder, but it has been wrong before (especially on
important matters, like trap #'s)...
I knew most of the rest was in ROM, that's the nice part about Macs.
> Also, there is a ROM call to switch MMU modes. Have a peek in IM V -- OS
> Utils:
>
> PROCEDURE SwapMMUMode (VAR Mode: Byte);
> CONST false32b = 0; {24 bit}
> true32b = 1; {32 bit}
Great! But: 1). Can this be done only at startup or anytime while the
machine is on? 2). What is the trap # ($Axxx)? I don't have a C
compiler yet. :(
--Rick C. Petty, aka Snoopy
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