andygeezer wrote:Nice christmas spirit, mr V.
So i take it jeorg at arcademodbios is selling this?
Probably almost this. As I see they uses DSW 3-4, that means they didn't find original region switching code which uses 2-4, so injected own code to do this.
idc wrote:When I saw that on his site a couple of weeks ago, I initially thought that Joerg had done the work. Given his track record, I guess I should have suspected otherwise right then. He is to modding/hacking what Stv is to YAJ.
What a ****.
I don't want to go deep into tech details, so I'll try to explain shortly -
in the term of BIOS modding, the main problem with HOLLY-chipset based systems (Naomi, Dreamcast, and others) is hardware checksum protection, which algorithm is still unknown btw.
so during all ~15 years life of DC-based hardware was unable to add/change code we want, except few lucky cases, when modded bioses passed check by the luck, because of CRC algo weakness.
it was so until this happened - http://forum.emu-russia.net/viewtopic.p ... 024#p23024
does 'arcademodbios' guy(s) hacked/bypassed this security by yourself ? - I don't think so. I doubt they know how it works or even exists (the security checking/unlocking is well obfuscated, so if you don't know it is there - most likely you'll not notice anything at all
so, in my opinion sell things, which is almost entirely consist of someone else's work, even without giving credits - is a total [insert bad word(s) here]