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Joined: Mar 2001
Posts: 16,923 Likes: 57
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Very Senior Member
Joined: Mar 2001
Posts: 16,923 Likes: 57 |
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.
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Joined: May 2004
Posts: 1,705 Likes: 3
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Very Senior Member
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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.
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Joined: Aug 2009
Posts: 669
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Senior Member
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Dark Seed (works)  
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Joined: Aug 2009
Posts: 1,148 Likes: 12
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OP
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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.
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Joined: Mar 2001
Posts: 16,923 Likes: 57
Very Senior Member
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Very Senior Member
Joined: Mar 2001
Posts: 16,923 Likes: 57 |
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 
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Joined: Aug 2009
Posts: 1,148 Likes: 12
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Last edited by Kale; 05/29/11 07:27 PM.
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Joined: Mar 2001
Posts: 16,923 Likes: 57
Very Senior Member
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Very Senior Member
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Posts: 16,923 Likes: 57 |
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).
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Joined: Feb 2008
Posts: 106
Senior Member
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Senior Member
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Sonic R (japan): Doesn't recognize any input
Last edited by JonasP; 05/29/11 08:18 PM.
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Joined: Feb 2008
Posts: 106
Senior Member
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Senior Member
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Shanghai - the great wall (japan)  Fully playable
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Joined: Sep 2009
Posts: 239
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Senior Member
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Posts: 239 |
Saturn Bomberman Fight!! (J) Gets as far as this screen then fades to black:
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