27 March 2010, 12:50 | #1 |
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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? |
27 March 2010, 12:56 | #2 |
CBM & Retro Mad
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I'm sure mine has various options and cpu types on there?, What version do you have
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27 March 2010, 12:56 | #3 |
Zone Friend
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Yeah CPU types but it always does run a maximum speed anyway.. (?)
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27 March 2010, 12:57 | #4 | |
PSPUAE DEV
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Quote:
Sure toni will correct me if im wrong, . |
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27 March 2010, 12:58 | #5 |
CBM & Retro Mad
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Fol is faaaaaar more knowledgable than me so i'd try that lol
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27 March 2010, 12:58 | #6 |
PSPUAE DEV
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27 March 2010, 13:02 | #7 |
CBM & Retro Mad
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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
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27 March 2010, 13:05 | #8 |
PSPUAE DEV
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27 March 2010, 13:10 | #9 |
CBM & Retro Mad
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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 |
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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..
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27 March 2010, 13:46 | #11 |
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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, 13:49 | #12 |
HOL/FTP busy bee
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27 March 2010, 15:44 | #13 |
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Using a custom CPU frequency (I tried entering "50") doesn't seem to work.. Everything just freezes.
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27 March 2010, 15:57 | #14 |
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27 March 2010, 21:54 | #15 |
Zone Friend
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Here are some logfiles, hope they help.
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28 March 2010, 15:42 | #16 |
WinUAE developer
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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.
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28 March 2010, 21:21 | #17 |
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Well, I just get a black screen when entering "50" as frequency, the system doesn't boot.
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29 March 2010, 14:55 | #18 |
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@Toni:
So, there's no way of getting proper (for example) 68030/50Mhz or 68060/50 speed in WinUAE? |
29 March 2010, 18:22 | #19 | |
WinUAE developer
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Quote:
Either you get accurate 68000 or (not so accurate) 68020 emulation or fastest possible without any accuracy at all. |
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29 March 2010, 18:37 | #20 |
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Ok, is there any other way of getting "similar" to 030 speed or so?
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