That's great PA. Good to see it's working in all its glory like it used to. Cheers to new discoveries.
I'm aware of the concept of the media and region codes but i'm not technically familiar in how they are implemented (since i'm no programmer). I thought you could simply change the flag's bits in the header to whatever you want to be able to boot it. Of course, if the bios checks a signature in any way, this might be why it's not working. Hardware dumping is an option but I wouldn't try it at this point to avoid messing with the hardware. I sure as hell wouldn't do it.
What about chipping it if you havent already Ace? I could have sworn you can dump the EEPROM that way and I'm positive you can clone the HD. I'm well aware it would lose value, but that might be worth it considering what you might be able to find. If you got Slayers 2.5 working once, do it again, Slayers boot disk should give the IP to copy the HD to the computer and have an option to back up the EEPROM I would just FTP to the retail boxes all the time using the slayers boot disk and back up the HD and EEPROM first thing once I had it chipped. The password and user name on retail boxes is "xbox"/"xbox". If you can boot retail games you could softmod it(I think) so you wouldnt have to open her up to get Slayers 2.5 working. I'm kind of just babbling here so let me put it this way. Run Slayers on the debug. Back up the HD via FTP and the EEPROM(slayers will back it up to the debug HD so just ftp that over the to computer as well). Get a retail box, chip it and flash the modchip with the debug bios(assuming you have it somewhere but on the physical chip) in one of the banks(might just be one bank depending on the chip). Dump the FTP HD contents to it and flash with the debug EEPROM. Doing all this will give you a retail unit that behaves just like the debug that you can go to town on and not care about messing it up.
Ahhh, so the guts are just too different? Even if you could get the EEPROM and the HD, no way to get at the BIOS short of pulling the chip out and dumping it? That slayers disk has a shit ton of BIOs's on it, one might just work but that is also kind of a shady idea considering you might brick it again. I would assume there is a way to dump the BIOS through software but I could be completley off base. Also now that I have your attention I'm enjoying the hell out of RE4. Thanks
Ah, I got ya now. One of the biggest mistakes I've made of recently is not giving RE4 a fair shake, If you ever feel like trying again let me know I'll get her back to ya.
Haha, there's nothing better than to try it out. I doubt the behaviour will be the exact same as I got since it's some type of debug bios but it might give more indications for what it's looking for.