Re: HiROM bad, LoROM good

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This message was posted by experienced_swcdx2_user, posted on March 18, 2001 at 04:18:38 coming from 62.104.208
This message is a reply to HiROM bad, LoROM good posted from Ben posted at March 15, 2001 at 04:25:00
> I can not get HiROM games to load/run properly on my MGH. I am looking for a util to convert the =>16meg HiROM games to LoROM, I have tried all the utils on #9 utils page, none seem to do the trick. Perhaps there is no way to do this without a recompile of the game source, I dont know enuff about the difference between Hi/LoROM to be sure, seems like you could convert games less than 16meg from Hi to Lo by running it through some kind of hash. In that case I would think there is a util already proged and waiting for me to find, I just cant find it. Could some of the more experianced back-up artists point me in the right direction or perhaps set me straight on this? I think I see a SWCDX2 64m in my future.

Converting LoRom to HiRom and vice versa is not possible without recompiling a game. Mode 20 (LoRom) have their ROM mapped/structured in a different way than Mode 21 (HiRom). MOde 20 Roms consists of 32 kbits banks ($8000-$ffff), while HiRom banks are 64 kbits ($0000-$ffff). YOu see, a HiRom game trying to access address $1234 will fail as the copier doesn't have DRAM there.

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Message	> > I can not get HiROM games to load/run properly on my MGH. I am looking for a util to convert the =>16meg HiROM games to LoROM, I have tried all the utils on #9 utils page, none seem to do the trick. Perhaps there is no way to do this without a recompile of the game source, I dont know enuff about the difference between Hi/LoROM to be sure, seems like you could convert games less than 16meg from Hi to Lo by running it through some kind of hash. In that case I would think there is a util already proged and waiting for me to find, I just cant find it. Could some of the more experianced back-up artists point me in the right direction or perhaps set me straight on this? I think I see a SWCDX2 64m in my future. > Converting LoRom to HiRom and vice versa is not possible without recompiling a game. Mode 20 (LoRom) have their ROM mapped/structured in a different way than Mode 21 (HiRom). MOde 20 Roms consists of 32 kbits banks ($8000-$ffff), while HiRom banks are 64 kbits ($0000-$ffff). YOu see, a HiRom game trying to access address $1234 will fail as the copier doesn't have DRAM there.
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