Microcosm CD32 curiosity

Ian · 09 April 2007, 18:23

Seems odd this, while running in quickstart mode if you select best compatibility the game doesn't work, yet if you pick the two lesser option (which enable JIT) it works fine.

Tried with the latest official release and beta.

Gets an "internal hardware error".

Actually, I have narrowed it down to the "more compatible" option in the CPU section. It is enabled by default when using the quickstart option.

Without it the game works fine, with it it doesn't.

Toni Wilen · 09 April 2007, 19:32

It is usual timing specific game. Non-A500 QS settings are most compatible for most games, but there are (too) many "broken" games.

(and there is no point in having specific configurations because timings will change between versions)

Ian · 10 April 2007, 11:38

Is there a need for more compatible mode when emulating the CD32?

When you hover over it it says 68000 prefetch blah-de-blah.

Maybe it would be better to disable it from from selection, unless it also has some benefit when emulating 68020 it seems kind of redundant to me and will likely break more games.

Toni Wilen · 10 April 2007, 11:54

So you want it to be disabled because one game fails with it without testing others. Right..

btw, did you miss all older threads about 68020/AGA compatibility problems? I am not going to repeat them anymore..

Ian · 10 April 2007, 12:11

I have actually been going through the entire TOSEC collection over the weekend as it happens and quite a few games do not work that worked previously.

I will be testing them all again to see if the more compatible option is indeed the one that is stopping them all from working.

I have not seen other topics on the other problems though as I don't read everything on here.

Ian · 10 April 2007, 20:07

I have tested a few games that I remembered that didn't work and disabling "more compatible" also fixes Dragonstone.

I really should've made a list of what worked and what didn't. Guess I will have to test them all again

Dizzy · 10 April 2007, 20:08

yes a good reason to play some game

Ian · 10 April 2007, 20:26

A shame most of them are crap though.

Dizzy · 10 April 2007, 20:27

well the cd32 didn't die without a reason

derSammler · 12 April 2007, 15:27

I've reported that error 2 and a half year ago. It's indeed because of JIT. Best compatibility disables JIT, which will make the game fail...

Ian · 12 April 2007, 15:56

It's not the same anymore WK, it does work with JIT now (or at least past the part I highlighted)

Something actually part of the "more compatible" code is stopping it from working.

If as the tooltip suggests the more compatible option is introducing 68000 specific code then maybe that is why it is breaking a couple of CD32 games.

derSammler · 12 April 2007, 15:58

Quote:

Originally Posted by Ian

It's not the same anymore WK, it does work with JIT now (or at least past the part I highlighted)

Read again.

Ian · 12 April 2007, 16:03

You are right, however I tested it without JIT as well and it still worked so there

09 April 2007, 18:23	#1
Ian Global Moderator Join Date: May 2001 Location: Derby, UK Age: 46 Posts: 2,299	Microcosm CD32 curiosity Seems odd this, while running in quickstart mode if you select best compatibility the game doesn't work, yet if you pick the two lesser option (which enable JIT) it works fine. Tried with the latest official release and beta. Gets an "internal hardware error". Actually, I have narrowed it down to the "more compatible" option in the CPU section. It is enabled by default when using the quickstart option. Without it the game works fine, with it it doesn't.

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09 April 2007, 19:32	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,567	It is usual timing specific game. Non-A500 QS settings are most compatible for most games, but there are (too) many "broken" games. (and there is no point in having specific configurations because timings will change between versions)

10 April 2007, 11:38	#3
Ian Global Moderator Join Date: May 2001 Location: Derby, UK Age: 46 Posts: 2,299	Is there a need for more compatible mode when emulating the CD32? When you hover over it it says 68000 prefetch blah-de-blah. Maybe it would be better to disable it from from selection, unless it also has some benefit when emulating 68020 it seems kind of redundant to me and will likely break more games.

10 April 2007, 11:54	#4
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,567	So you want it to be disabled because one game fails with it without testing others. Right.. btw, did you miss all older threads about 68020/AGA compatibility problems? I am not going to repeat them anymore..

10 April 2007, 12:11	#5
Ian Global Moderator Join Date: May 2001 Location: Derby, UK Age: 46 Posts: 2,299	I have actually been going through the entire TOSEC collection over the weekend as it happens and quite a few games do not work that worked previously. I will be testing them all again to see if the more compatible option is indeed the one that is stopping them all from working. I have not seen other topics on the other problems though as I don't read everything on here.

10 April 2007, 20:07	#6
Ian Global Moderator Join Date: May 2001 Location: Derby, UK Age: 46 Posts: 2,299	I have tested a few games that I remembered that didn't work and disabling "more compatible" also fixes Dragonstone. I really should've made a list of what worked and what didn't. Guess I will have to test them all again

10 April 2007, 20:08	#7
Dizzy Pirate Join Date: Jan 2002 Location: Denmark Posts: 3,395	yes a good reason to play some game

10 April 2007, 20:26	#8
Ian Global Moderator Join Date: May 2001 Location: Derby, UK Age: 46 Posts: 2,299	A shame most of them are crap though.

10 April 2007, 20:27	#9
Dizzy Pirate Join Date: Jan 2002 Location: Denmark Posts: 3,395	well the cd32 didn't die without a reason

12 April 2007, 15:27	#10
derSammler Senior Member Join Date: Jun 2001 Location: Germany Posts: 1,667	I've reported that error 2 and a half year ago. It's indeed because of JIT. Best compatibility disables JIT, which will make the game fail...

12 April 2007, 15:56	#11
Ian Global Moderator Join Date: May 2001 Location: Derby, UK Age: 46 Posts: 2,299	It's not the same anymore WK, it does work with JIT now (or at least past the part I highlighted) Something actually part of the "more compatible" code is stopping it from working. If as the tooltip suggests the more compatible option is introducing 68000 specific code then maybe that is why it is breaking a couple of CD32 games.

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12 April 2007, 16:03	#13
Ian Global Moderator Join Date: May 2001 Location: Derby, UK Age: 46 Posts: 2,299	You are right, however I tested it without JIT as well and it still worked so there