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NAOMI Development BOOT ROM
#347717 - 12/03/15 06:53 AM
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Re: NAOMI Development BOOT ROM
[Re: Smitdogg]
#347752 - 12/04/15 04:31 AM
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Very cool. Is there a code to access this or was the ROM hacked? Model 3 features something similar embedded in some games but to my knowledge, no one knows yet whether it is accessible.
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Bart
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Re: NAOMI Development BOOT ROM
[Re: Bart T.]
#347753 - 12/04/15 04:32 AM
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As far as I can tell everyone is hush hush anonymous about it so I have no idea.
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Re: NAOMI Development BOOT ROM
[Re: Smitdogg]
#347765 - 12/04/15 04:10 PM
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Wait are you guys saying this is actually a hidden mode already in standard Naomi roms? (rather than a special rom that Sega only gave out to Naomi developers?)
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| R. Belmont |
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Cuckoo for IGAvania
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Reged: 09/21/03
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Posts: 9716
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Loc: ECV-197 The Orville
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Re: NAOMI Development BOOT ROM
[Re: JustNiz]
#347769 - 12/04/15 05:59 PM
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> Wait are you guys saying this is actually a hidden mode already in standard Naomi
> roms? (rather than a special rom that Sega only gave out to Naomi developers?)
For Naomi, this is a developer-only thing. Bart is saying some Model 3 games as shipped may contain a similar debug mode, but they haven't confirmed that (it's possible that the text is present but the code/data isn't) or figured out how to enable it.
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Re: NAOMI Development BOOT ROM
[Re: R. Belmont]
#347776 - 12/05/15 02:21 AM
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> > Wait are you guys saying this is actually a hidden mode already in standard Naomi
> > roms? (rather than a special rom that Sega only gave out to Naomi developers?)
>
> For Naomi, this is a developer-only thing. Bart is saying some Model 3 games as
> shipped may contain a similar debug mode, but they haven't confirmed that (it's
> possible that the text is present but the code/data isn't) or figured out how to
> enable it.
The Scud Race one can be accessed by patching the ROM. For those who can build Supermodel, the necessary change would be to Src/Model3/Model3.cpp immediately after line 2943:
Code:
else if (!strcmp(Game->id, "scud"))
{
*(UINT32 *) &crom[0x799DE8] = 0x00050208; // debug menu
}
(I haven't actually tested this in ages, though.)
With the patch, attempting to enter the service menu will instead activate the debug menu. To my knowledge, nobody knows whether it's actually possible to activate this code without a patch like this. I believe VF3 also contains a similar menu. It's not nearly as cool as the Naomi one but I think it has a flat-shaded spinning cube or two.
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Bart
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