| Re: [hatari-devel] Suspected Hatari 2.3.0 regression (prefetch?) |
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Hi,
On 12/16/20 12:57 AM, Roger Burrows wrote:
On 15 Dec 2020 at 17:46, Roger Burrows wrote:
P.S. If you need DELMPAINT, Eero can point you to it.
OK, you can probably forget this. I was looking through the notes added to the
Hatari docs by Eero after 2.3.0 was released, and he states that DELMPAINT
requires the MMU. I turned it on, and the crash went away. I assume there's
some interaction between prefetch and the MMU. You guys will know whether
that's expected.
I've added notes about programs that work only
when MMU is enabled, and Laurent has been checking
which programs fail when MMU is disabled. That
info should be now pretty up to date.
Neither of us has debugged what are causing these
issues though.
I just know that because some complex programs
(that on real HW) work with MMU, are failing with
Hatari MMU emulation when caches are also enabled,
030 MMU emulation isn't fully working yet...
According to Toni, 030 MMU emulation works fine
for Amiga, but AFAIK its MMU usage is somewhat
simpler e.g. in relation to exceptions, than for
Atari.
(Wheras e.g. Aranym doesn't emulate caches, and
its MMU emulation is also for somewhat simpler
040 MMU.)
- Eero