Allow booting in DSi direct mode without BIOS/firmware/NAND dumps.#2523
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Arisotura merged 5 commits intomelonDS-emu:masterfrom Feb 11, 2026
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Allow booting in DSi direct mode without BIOS/firmware/NAND dumps.#2523Arisotura merged 5 commits intomelonDS-emu:masterfrom
Arisotura merged 5 commits intomelonDS-emu:masterfrom
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asiekierka
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I have tested this pr and most DS games work in DSi mode without BIOS/firmware/NAND dumps. Games that do not boot:
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Yeah, so there's no regression. Of course, the BIOS needs work before it can run non-homebrew DSi programs. |
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looks good to me, just gotta fix that one conflict that popped up... |
This is an initial patch which enables booting programs in DSi direct mode without requiring BIOS/firmware/NAND dumps from increasingly expensive consoles: - The open DSi BIOS is derived from a modified build of FreeBIOS; minor patches have been done (such as moving SWI 0x12 to 0x02), but no new SWI functions have been implemented. - The DSi firmware stub is generated in the same way as the NDS firmware stub; this appears to be good enough for BlocksDS's dswifi to pick up the new AP definitions. - The DSi NAND is currently not stubbed at all; rather, the code has been edited to allow bringup without a NAND image. This is sufficient for DSi mode homebrew; programs running from the cartridge slot are likewise not expected to require NAND access. More work has to be done before it's useful for non-homebrew scenarios.
…t for Chinese language option
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Done. |
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okie dokie |
maximxlss
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…elonDS-emu#2523) * Allow booting in DSi direct mode without BIOS/firmware/NAND dumps. This is an initial patch which enables booting programs in DSi direct mode without requiring BIOS/firmware/NAND dumps from increasingly expensive consoles: - The open DSi BIOS is derived from a modified build of FreeBIOS; minor patches have been done (such as moving SWI 0x12 to 0x02), but no new SWI functions have been implemented. - The DSi firmware stub is generated in the same way as the NDS firmware stub; this appears to be good enough for BlocksDS's dswifi to pick up the new AP definitions. - The DSi NAND is currently not stubbed at all; rather, the code has been edited to allow bringup without a NAND image. This is sufficient for DSi mode homebrew; programs running from the cartridge slot are likewise not expected to require NAND access. More work has to be done before it's useful for non-homebrew scenarios. * Implement a less stub DSi::NeedsDirectBoot() * Do not block direct boots if DSi NAND is missing but BIOS/firmware is present * Correctly initialize extended header for DSi generated firmware * Fix overriding firmware language in DSi mode, add experimental support for Chinese language option
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This is an initial patch which enables booting programs in DSi direct mode without requiring BIOS/firmware/NAND dumps from increasingly expensive consoles:
More work has to be done before it's useful for non-homebrew scenarios.