Suehirocho
New Challenger
- Joined
- May 22, 2004
- Posts
- 62
Hi folks,
sometimes even with all the precautions you take you end up with a boot , which is always a big disappointment to be polite.
To the fact : I just got scr**ed with two MVS boots very recently (won't give names at this stage since things are being discussed and hopefully solved ) although sold as originals.
Since I'm pissed off by all those bootlegs flying around, I'd like to share some remarks / questions and maybe something usefull will come out of it for members in search of such information.
Sorry for the long post, but I would be glad to read your remarks, comments, experience and stuff on this !
sometimes even with all the precautions you take you end up with a boot , which is always a big disappointment to be polite.
To the fact : I just got scr**ed with two MVS boots very recently (won't give names at this stage since things are being discussed and hopefully solved ) although sold as originals.
Since I'm pissed off by all those bootlegs flying around, I'd like to share some remarks / questions and maybe something usefull will come out of it for members in search of such information.
- 1/ I already had a bad feeling about the carts from the outside. I think that no MVS game has 100% regular contacts, with fully-populated traces / contacts I mean, with the exception of early 1990/1991 releases (NAM ad the like)
when you look at a genuine SNK board (from approx 1992 on), some contacts are wider, and there are many irregular gaps between contacts.
Of course, bootlegs made by "converting" genuine SNK boards cannot by noticed by their connector layout, but those using custom-made boards usually (I speak from experience, unfortunatelly) look like this one from Zonko's Bootleg Fighters
http://www.jamma.nl/gallery/bootlegs/wakuboard1
My conclusion : without even opening a cart, if you see a regular connector pattern (no gaps, no wider contacts) for a 1992+ game, chances are that's booty time inside.
- 2/ I opened the two carts , which had the symptoms described above and both happened to be clear boots on custom-made boards.
No SNK or markings anywhere, a mix of flash (intel) and EEPROMS on a quite unusual trace design.
The thing is that every solder job had been done by machines, so the argument to be carefull of solder quality is maybe not so much of a good hint. We're facing well-equipped crooks it seems. I must admit they look very professional indeed
- 3/ At this stage, I decided to check their Progr checksums using the great Unibios (mucho kudos to Raz ! ) not that I had any doubt of them being boots but simply out of curiousity.
My findings :
- with "conversion" boots (genuine SNK boards + boot chips) like I saw before, the checksum usually fails but ...
- both of these "industrial boots" passed the checksum
Now I thought in the past that the CRC check could detect corruption and boots, but this showed me I was wrong.
Question esp. to Raz : is there any theoritical / logical way of really checking carts authenticity from a software point of view (that would be a fantastic feature in the unibios ) ? Sorry if my question sounds dumb as I'm a complete stranger to programming a bios.
- 4/ Last but not least I was really shocked to notice that these "custom industrial bootleg boards" had 1 genuine SNK chips soldered on them (a 273 or another one cant remember just now) !
What more is, it is SMD mounted so can you imagine someone desoldering those from a granny board and resoldering them ??? That sounds crazy. Maybe the bootlegeds got their hands on a batch of unmounted chips instead. I looks so well-organized that it gives my goose bumps
Sorry for the long post, but I would be glad to read your remarks, comments, experience and stuff on this !