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#70070 - 05/29/11 05:23 PM Re: The Sega Satan WIP/screenshot thread [Re: Kale]  
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R. Belmont Offline
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The "high RAM" at 06xxxxxx has no waitstate penalty - the SH-2 can burst-fetch it at full speed (which is why program code is always stored there). The "low RAM" at 2xxxxxxx does have 1 or 2 waitstates, I forget how many now. Video and sound RAM and register accesses have varying amounts of wait states as well.

#70072 - 05/29/11 05:33 PM Re: The Sega Satan WIP/screenshot thread [Re: Kale]  
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Haze Offline
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of course being SH2 you have the whole cache thing confusing it even more, so if you don't actually hit the ram there is no penalty etc. Implementing universal wait states might just make it too slow.

then of course the dual CPUs. Are any of these tests being done with it set to *perfect* interleave? I have a feeling you're going to find a lot of Saturn games which are fussier than anything on ST-V.

#70073 - 05/29/11 05:39 PM Re: The Sega Satan WIP/screenshot thread [Re: Kale]  
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Kaylee Offline
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Kaylee  Offline
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Dark Seed (works)




#70077 - 05/29/11 06:39 PM Re: The Sega Satan WIP/screenshot thread [Re: Kaylee]  
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Kale Offline
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Originally Posted By Kaylee
Gal Jan (Jap)


No clue what It means


Doesn't get proper data from the disc file system.

Final Fight Revenge



Ok, any clue about how the cart RAM works?

Last edited by Kale; 05/29/11 06:43 PM.
#70079 - 05/29/11 06:50 PM Re: The Sega Satan WIP/screenshot thread [Re: Kale]  
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R. Belmont Offline
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Originally Posted By Kale
Ok, any clue about how the cart RAM works?


cs0.c in Yabause 0.9.10, but pretty much you just map RAM at the right places in the cartridge area and it works apparently smile

#70081 - 05/29/11 06:52 PM Re: The Sega Satan WIP/screenshot thread [Re: Kale]  
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Kale Offline
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Ok, I've got the corrispective Sega document, it's very easy (and indeed I've got that by just looking at the code). smile







No BGMs, they are probably red-book tracks.

This one crashes once that you get to the first mid-boss --"




Last edited by Kale; 05/29/11 07:27 PM.
#70088 - 05/29/11 07:27 PM Re: The Sega Satan WIP/screenshot thread [Re: Kale]  
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R. Belmont Offline
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Virtua Fighter 2, which Sega claims to be the most advanced and highest-performance use of the dual CPUs on the Saturn:





Plays fine, except redbook BGM is silent (not shocking).

#70089 - 05/29/11 08:16 PM Re: The Sega Satan WIP/screenshot thread [Re: R. Belmont]  
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JonasP Offline
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Sonic R (japan):



Doesn't recognize any input

Last edited by JonasP; 05/29/11 08:18 PM.
#70090 - 05/29/11 08:29 PM Re: The Sega Satan WIP/screenshot thread [Re: JonasP]  
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JonasP Offline
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Shanghai - the great wall (japan)



Fully playable

#70091 - 05/29/11 09:04 PM Re: The Sega Satan WIP/screenshot thread [Re: Kale]  
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Dr. Spankenstein Offline
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Saturn Bomberman Fight!! (J)

Gets as far as this screen then fades to black:



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