![]() So far the algorithm is unknown though it's been weak enough that, if you get lucky, the check still passes depending on the changes you make (you get a successful collision) HOLLY will then perform some unknown check on the whole data and if it doesn't like what it sees, it will keep G1 locked and setĪ register that can only be cleared at reboot (so that G1 remains locked if the check failed once until next power cycle) (which on NAOMI, your cart/dimm sits on top of), in order for the G1 bus to be unlocked the BIOS sends itself to HOLLY. HOLLY, the Power VR GPU used by many SEGA systems (Dreamcast, NAOMI, Atomiswave.) acts as a gatekeeper to the G1 BUS They are there for completeness's sake and educational purposes, they will behave exactly the same as the BIOSes which have not been parity fixed.Īside from the patches themselves, originally discovered by MetalliC, which reenable some leftover development feature made by SEGA allowing for easy region changes with DIPSW, What is the "Redundant" folder? It contains a parity fixed versions of the epr-21576h multi bios.īecause parity didn't need to be changed in the first place for this bios to run (it ran at first try during tests), you don't actually need to use it, Older revisions in this archive are just there for completeness' sake as a proof of concept.Īs a reminder these are the tested available DIPSW configurations Issues introduced by the original multibios. These are multiple revisions of the naomi1 BIOSes patched with the multi region enabled and using a proper bootstrap (not the one from the HOTD2 beta/DEV HAT used to bypass the HOLLY checksum)Īll the naomi bioses present in this archive have been tested on real hardware, they should fix the compatibility *DISCLAIMER* This was done as a proof of concept, I advise you to run the latest multi bioses I released earlier (the naomi1 version is present in this archive as "epr-21576h_multi.ic27_proper") ![]()
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