Adjust speed in WinUAE

oRBIT · 27 March 2010, 12:50

Is there a way of properly emulate the speed of an, let's say, "A1200 with 030/fastmem" with WinUAE?
The only settings I've seen is "A500 compability" and "fastest possible". For developing with WinUAE, this would be usefull since most Amigas don't reach the speed of WinUAE.

Or have I missed a feature?

ck1200 · 27 March 2010, 12:56

I'm sure mine has various options and cpu types on there?, What version do you have

oRBIT · 27 March 2010, 12:56

Yeah CPU types but it always does run a maximum speed anyway.. (?)

FOL · 27 March 2010, 12:57

Quote:

Originally Posted by oRBIT

Is there a way of properly emulate the speed of an, let's say, "A1200 with 030/fastmem" with WinUAE?
The only settings I've seen is "A500 compability" and "fastest possible". For developing with WinUAE, this would be usefull since most Amigas don't reach the speed of WinUAE.

Or have I missed a feature?

I would have thought A500 Speed, is the option your on about. Aslong as JIT is disabled it will run at speed of CPU you set.

Sure toni will correct me if im wrong,

.

ck1200 · 27 March 2010, 12:58

Fol is faaaaaar more knowledgable than me so i'd try that lol

FOL · 27 March 2010, 12:58

Quote:

Originally Posted by ck1200

I'm sure mine has various options and cpu types on there?, What version do you have

Aye, but you always have A500 / fast as possable options.

The newer WinUAE lets you alter the clock speed from a set default to higher speeds though.

ck1200 · 27 March 2010, 13:02

Quote:

Originally Posted by FOL

Aye, but you always have A500 / fast as possable options.

The newer WinUAE lets you alter the clock speed from a set default to higher speeds though.

Thats what i'm thinking only just set this new version up on a pc to use Classic Wb on it seems to handle the higher cpu and ram extension much better

FOL · 27 March 2010, 13:05

Quote:

Originally Posted by ck1200

Thats what i'm thinking only just set this new version up on a pc to use Classic Wb on it seems to handle the higher cpu and ram extension much better

Aye, get piccasso on it and bammmmm!!!, you get awesome native resolutions,

.

ck1200 · 27 March 2010, 13:10

cool well i only set this up the other day so scouring through the games list at the min and having fun, will be in touch soon though for some more 1200 goodies

Chris

oRBIT · 27 March 2010, 13:14

I just tried this, disabling JIT doesn't set the correct CPU speed. My programs runs far too slow with JIT disabled compared to a real Amiga. So it has to be some other settings, if it's there at all..

Leffmann · 27 March 2010, 13:46

You only get cycle exact modes for the 68000 and 68020.

I'm guessing that you're testing the speed of your code by measuring the number of scanlines it takes to finish? You'll find that the CPU seems to run slower during the display time, and in the fastest possible speed during whatever time is left between the end of the frame and the beginning of the next.

You have more power per frame so to speak than on a real Amiga, it's just allocated differently.

TCD · 27 March 2010, 13:49

Quote:

Originally Posted by oRBIT

Is there a way of properly emulate the speed of an, let's say, "A1200 with 030/fastmem" with WinUAE?

No, but you can try a custom CPU frequency setting when cycle exact is enabled.

oRBIT · 27 March 2010, 15:44

Using a custom CPU frequency (I tried entering "50") doesn't seem to work.. Everything just freezes.

TCD · 27 March 2010, 15:57

Quote:

Originally Posted by oRBIT

Using a custom CPU frequency (I tried entering "50") doesn't seem to work.. Everything just freezes.

Hmm, works fine here. Maybe you could include a log (tick the option under 'Miscellaneous') for Toni?

oRBIT · 27 March 2010, 21:54

Here are some logfiles, hope they help.

Toni Wilen · 28 March 2010, 15:42

CPU frequency does not do much in 68020+ modes. (mainly change emulated fast ram access speed) I can't duplicate any freezes (what is "everything"?) and there is nothing interesting in logs.

oRBIT · 28 March 2010, 21:21

Well, I just get a black screen when entering "50" as frequency, the system doesn't boot.

oRBIT · 29 March 2010, 14:55

@Toni:
So, there's no way of getting proper (for example) 68030/50Mhz or 68060/50 speed in WinUAE?

Toni Wilen · 29 March 2010, 18:22

Quote:

Originally Posted by oRBIT

@Toni:
So, there's no way of getting proper (for example) 68030/50Mhz or 68060/50 speed in WinUAE?

Correct. Emulating "proper" speed would require huge amounts of CPU power for cycle counting, cache emulation etc.. (and I am not even interested, programming plain and generic 680x0 CPU emulation is ultraboring compared to chipset stuff)

Either you get accurate 68000 or (not so accurate) 68020 emulation or fastest possible without any accuracy at all.

oRBIT · 29 March 2010, 18:37

Ok, is there any other way of getting "similar" to 030 speed or so?

27 March 2010, 12:50	#1
oRBIT Zone Friend Join Date: Apr 2006 Location: Gothenburg/Sweden Age: 48 Posts: 339	Adjust speed in WinUAE Is there a way of properly emulate the speed of an, let's say, "A1200 with 030/fastmem" with WinUAE? The only settings I've seen is "A500 compability" and "fastest possible". For developing with WinUAE, this would be usefull since most Amigas don't reach the speed of WinUAE. Or have I missed a feature?

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27 March 2010, 12:56	#2
ck1200 CBM & Retro Mad Join Date: Nov 2009 Location: North Wales/Wirral Uk Age: 42 Posts: 611	I'm sure mine has various options and cpu types on there?, What version do you have

27 March 2010, 12:58	#5
ck1200 CBM & Retro Mad Join Date: Nov 2009 Location: North Wales/Wirral Uk Age: 42 Posts: 611	Fol is faaaaaar more knowledgable than me so i'd try that lol

27 March 2010, 13:10	#9
ck1200 CBM & Retro Mad Join Date: Nov 2009 Location: North Wales/Wirral Uk Age: 42 Posts: 611	cool well i only set this up the other day so scouring through the games list at the min and having fun, will be in touch soon though for some more 1200 goodies Chris

27 March 2010, 13:14	#10
oRBIT Zone Friend Join Date: Apr 2006 Location: Gothenburg/Sweden Age: 48 Posts: 339	I just tried this, disabling JIT doesn't set the correct CPU speed. My programs runs far too slow with JIT disabled compared to a real Amiga. So it has to be some other settings, if it's there at all..

27 March 2010, 13:46	#11
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	You only get cycle exact modes for the 68000 and 68020. I'm guessing that you're testing the speed of your code by measuring the number of scanlines it takes to finish? You'll find that the CPU seems to run slower during the display time, and in the fastest possible speed during whatever time is left between the end of the frame and the beginning of the next. You have more power per frame so to speak than on a real Amiga, it's just allocated differently.

27 March 2010, 15:44	#13
oRBIT Zone Friend Join Date: Apr 2006 Location: Gothenburg/Sweden Age: 48 Posts: 339	Using a custom CPU frequency (I tried entering "50") doesn't seem to work.. Everything just freezes.

28 March 2010, 15:42	#16
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	CPU frequency does not do much in 68020+ modes. (mainly change emulated fast ram access speed) I can't duplicate any freezes (what is "everything"?) and there is nothing interesting in logs.

28 March 2010, 21:21	#17
oRBIT Zone Friend Join Date: Apr 2006 Location: Gothenburg/Sweden Age: 48 Posts: 339	Well, I just get a black screen when entering "50" as frequency, the system doesn't boot.

29 March 2010, 14:55	#18
oRBIT Zone Friend Join Date: Apr 2006 Location: Gothenburg/Sweden Age: 48 Posts: 339	@Toni: So, there's no way of getting proper (for example) 68030/50Mhz or 68060/50 speed in WinUAE?

29 March 2010, 18:37	#20
oRBIT Zone Friend Join Date: Apr 2006 Location: Gothenburg/Sweden Age: 48 Posts: 339	Ok, is there any other way of getting "similar" to 030 speed or so?

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