Subject: MOL source tree moved
From: Samuel Rydh (samuel@ibrium.se)
Date: Mon Mar 12 2001 - 19:03:16 MST
The MOL source tree has moved to a new host (both the rsync
and the bitkeeper server):
via BitKeeper:
bk parent bk://zorn.theophys.kth.se:5000
bk clone
vua rsync:
rsync -vcaz zorn.theophys.kth.se::mol mol
Note that the identity of the repository has changed - it is
necessary to reclone the repository.
It should now be simple to build and install MOL from the
developer tree. It should be sufficient to do
rsync -vcaz zorn.theophys.kth.se::mol mol
make libimport
make install
or, using bitkeeper,
bk update
make libimport
make install
The 'libimport' rule downloads (using rsync) the support
binaries from zorn (the start sound, MacOS compiled drivers
and a few other things).
The latest development snapshot contains *extensive*
changes to the low-level parts of MOL. I'd like to get
some feedback before I roll it out as 0.9.56 (in particular
about performance and stability). The modifications in brief:
* Rewritten MOL engine:
The source is now much cleaner and simpler (and slightly
faster). Most assumptions about the kernel has been
eliminated (the mol module should in principal be compatible
with any 2.4 kernel without recompilation, although it
is of course preferable to recompile it anyway).
SMP should be a lot simpler to implement. In principal,
what is missing is some locking (multi-session should
also be almost working).
The runtime patching (on 2.2 kernels) is now almost unnecessary
(only a single hook remains).
It should be a lot simpler to port MOL to APUS (as far as
I'm aware, what needs to be fixed is APUS nonstandard
KERNELBASE definition and 603 support).
* AltiVec support
I've not tested this extensively since I didn't find
many programs that actually used AltiVec...
* MacOS 9.1 stability fixes.
I think I've addressed the problem which caused some setups
to freeze.
* L2CR register is now handled correctly.
Extensions setting the L2CR register should no longer
freeze MOL (please confirm this).
To be fixed
===========
- MacOS 9.1 performance in MOL is slightly worse than 9.0.4.
I think this is caused by extensive table overflows in the
MMU subsystem. Fixing this should give a substantial performance
gain.
- The latest version of MOL will not run on 603 or 601 machines.
I will try to add true support for these machines (at least the 603)
later this week.
Cheers,
/Samuel
----------------------------------------------------------
E-mail <samuel@ibrium.se> WWW: <http://www.ibrium.se>
Phone/fax: (home) +46 8 4418431, (work) +46 8 7908470
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