Sonic's Edusoft Problem May 3, 2011 10:13:17 GMT
Post by astaroth on May 3, 2011 10:13:17 GMT
It could be patched to work on all BIOSes, but nobody's done it yet. (It should be simple - just enable VBlank interrupts at boot.)
Note that header problems show up as either going to the built-in game every time (no TMR SEGA) or SOFTWARE ERROR (wrong region or checksum). Hanging on the SEGA screen is a sign of an actual bug in the game.
Ah ok. Thanks for that. I have used your header reader and, after reading through SMSpower and "nearly" understanding everything, i modified the header on Sonic Triple Trouble as it had the wrong region and checksum.
I now use the SONBIOS in Fusion as others have suggested. It emulated what was happening on my console perfectly. I then loaded up STT with the modified header and it loaded up fine. So fingers crossed it will load fine on my real life console. Unfortunately i have no spare EPROMS left!
The main Edusoft ROM does still hang as you say Maxim. However, i modified the HAX2 versions header and tried that in Fusion using SONBIOS and it loaded fine. Obviously i can't say 100% as i haven't flashed an EPROM yet.
So, from what you say Maxim, my version of Edusift, should it work on a console, will only work on a console using the SONBIOS? I guess i could get Fusion to use other BIOS' and see if it still loads?
Again, thanks to all for your help. If i can return the favour (which i doubt!) i'd be happy to do so!