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sifadil / pcsx2-playground

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Ecco the Dolphin works only in r291 #49

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
I begin to enjoy posting issues... Well, maybe this will be easier to 
fix...

I posted it in comment to r300, but it missed everyone's eyes...

Ecco the Dolphin is stuck on loading, when loading bar goes to the end and 
then nothing happens...
Occasionally, game worked well and was playable (only) in r291, but not in 
r262, or r300, or any other revision...

Good luck...

Original issue reported on code.google.com by eliotfur on 18 Nov 2008 at 9:15

GoogleCodeExporter commented 8 years ago 
I have another major counters revision currently being tested by Rama and 
company. 
It may resolve this issue.  If testing goes well then it'll be posted to the SVN
within a day.  So after it's up, try it out and let me know here if it's better 
or not.

Original comment by Jake.Stine on 18 Nov 2008 at 9:36

GoogleCodeExporter commented 8 years ago 
Please try Ecco the Dolphin with the new revisions (r345 or better) and let me 
know
if it is playable now.  Thanks.

Original comment by Jake.Stine on 20 Nov 2008 at 12:19

GoogleCodeExporter commented 8 years ago 
Well... Tested it on r349... Bug is still out there...

Look at this log from r291:
...
MTC0 Breakpoint debug Registers code = 0
MTC0 Breakpoint debug Registers code = 0
MTC0 PCCR = 0 PCR0 = 0 PCR1 = 0 IMM= 0
IOP Recompiler data reset   <--- here!!!
Recompiling COP2:00122140:  vmul.xyz vf07, vf04, vf04
Recompiling COP2:00122140:  vaddy.x vf07, vf07, vf07y
...and so on...

And this - from r349:
...
MTC0 Breakpoint debug Registers code = 0
MTC0 Breakpoint debug Registers code = 0
MTC0 PCCR = 0 PCR0 = 0 PCR1 = 0 IMM= 0
...a-a-a-a-and stuck... :-)

Maybe you should finish IOP counters part?..

Original comment by eliotfur on 20 Nov 2008 at 12:26

GoogleCodeExporter commented 8 years ago 
Actually it looks like something related to the COP2.  The MTC0 breakpoints are
related to the COP2 changing the PS2's memory address space, I think.  And all 
that
seems to tie back into when and how often cpuTestTIMR is called.  Even subtle 
changes
to counters can alter exactly when cpuTestTIMR is called, and that can break or 
fix
games.

The IOP Recompiler data reset doesn't mean much except that the IOP is running. 
 It
never resets because the emulator's frozen. ;)

If I can find the spot(s) where cpuTestTIMR should be called immediately it 
should
help big-time.  But it's hard to do without being able to run the game directly 
and
trace specific code that's running when it freezes. :/

Original comment by Jake.Stine on 20 Nov 2008 at 1:22

GoogleCodeExporter commented 8 years ago 
I've created several logs to compare... From r262, r291 and r317...

I see a lot of difference there... BTW, can you advise me a good program to 
compare 
logs, totalcmd's file compare is somelike stupid...

I can see some difference in gs and vif interrupts...

And I don't know what am I trying to find...

Original comment by eliotfur on 20 Nov 2008 at 4:12

GoogleCodeExporter commented 8 years ago 
Please test Ecco the Dolphin with r393 and let me know if it's crash bug is 
fixed or
not fixed.  Thanks. :)

Original comment by Jake.Stine on 5 Dec 2008 at 5:03

GoogleCodeExporter commented 8 years ago 
No, it still doesn't work... Dig deeper...
Tested with/without MTGS and x2/x3 sync hacks just for sure...

Original comment by eliotfur on 5 Dec 2008 at 9:50

GoogleCodeExporter commented 8 years ago 
Even sync hacks didn't fix it?  Then I'm probably way off in my assumption. 
Something else is breaking this game.  I don't know if I'll be able to 
troubleshoot
it without a block dump.

Original comment by Jake.Stine on 5 Dec 2008 at 3:34

GoogleCodeExporter commented 8 years ago 
Anything resolved on this issue from recent revisions?

Original comment by Jake.Stine on 17 Dec 2008 at 3:21

GoogleCodeExporter commented 8 years ago 
Nope... r441 with/without any speedhacks... Everything the same...

Original comment by eliotfur on 17 Dec 2008 at 3:31

GoogleCodeExporter commented 8 years ago 
Go figure.  So the very broken counters code in r291 allowed the game to start 
and
run, and nothing else does.  Go figure.  Emulation is fun... :P

I'm relegating this issue to low priority.  I'll try to revisit it sometime in 
the
future.

Original comment by Jake.Stine on 17 Dec 2008 at 6:39

GoogleCodeExporter commented 8 years ago 
Well, okay, it's me again...
I've just downloaded r658...
Well... Ecco the Dolphin works with _EE_x3_sync_hack_ enabled and IOP_x2_hack_ 
disabled only... Period(or ellipsis?).

Original comment by eliotfur on 30 Jan 2009 at 6:15