Xenepp

Well it turns out I was being a bit of a twit, I accidently saved the original file as half it's size after doing the byteswap so when I burned the EPROMs they were only half full. I now have a working Iron Solder cart. Thanks for your help folks. So to recap, all I did was byteswap the rom file, then dissect it by word using winhex and then write those to two 27c800 eproms. The first file spit out from winhex being the high words, the second being the low (top rom, bottom rom on the cart). For those interested, both mask roms were faulty. Several bits were incorrect on both when comparing them to the roms I found online and ultimately used.

That would be useful. I discovered by taking apart and dumping another cart with two roms that they are 27C160 equivilents and need to be byteswapped and be split word-wise (no idea what you'd need to do for four rom carts). My only problem now is I think it either needs the header stripping (JiFFI doesn't see one) or needs to start at a different address thanks to the encryption since when I burned new roms it red screens on the Jag. It waits a moment before red screening though so that's more than it did before. It'd be good to see this run after having this sat about for over a year. I'm open to suggestions!

Not really, I'm asking how to split a game into two roms for burning to eproms as Iron Soldier is a two ROM cart. Also I'm using the proto rom of Brett Hull to test with so it should match since as far as I can tell, the picture I found was the same cart that is available in the NonGoodJag set which is explicitly marked as a prototype. Hi ROM = 8044 Lo ROM = AD3F There are also two Brett Hull dumps in the nongoodjag set and neither match no matter what I do. They both have to be protos too since it was never released. I assume you mean the same revision, not the same cart since the checksum should only change when the original data does, not the physical roms.

I have an Iron Soldier cart here which has never worked for me. I know the Jag is ok since Cybermorph and Doom work fine. This cart has some corrosion around the mask rom pins and continuity to the cart edge seems good and I have gotten the edge gleaming so I suspect one of the mask roms has bitten the dust. So I have a programmer and some large eproms, but I've been trying to figure out how to split them for burning (and likewise dumping for testing in an emulator). I saw a Brett Hull proto cart and it had the sum16s right on the labels so I figured that would make life much easier, I could split the rom for that game in various ways until I got the right checksum but after splitting in half, by byte and by word, both little and big endian, I still can't get a proper match. I came close by splitting by word but close isn't correct so I assume there's something I'm missing (unless the publicly available dumps are bad or a different revision?). I realise I can just buy a working cart as it's not a rare game but since I enjoy repairing games I'd much rather try that as I have all I need to do it right here.

Ah ok, looking at the usual sources I'm out of date anyhow, which goes to show when I last checked that one! I guess linux builds would use that ODK then, keeping things free etc. That's a shame. Yeah, not much point in nigh on rewriting these at this stage I guess, those dual view skins would be much nicer anyhow Since you were kinda enough to humor me, maybe you'll do so once more: http://forums.xbox-scene.com/index.php?showtopic=682985 It can't hurt to ask?

Holy crap, just noticed how old this thread was

Voted Winstonx, the overscan area needs some work Is there a resolution I should be using to get the aspect correct on that btw? None of the standard resolutions work nor multiples of 320x200.. While I'm here as it's sort of related, what's you take on this, it'd be interesting to know: http://forums.xbox-scene.com/index.php?showtopic=662368