Yeah I bet that's the issue. How did you go about testing each V rom?I had this issue with this game too. One of the V roms was bad. I downloaded it, burned it and replaced it with an EEPROM. Worked flawlessly after that.
# linux commands if someone else wants to try this
dd if=/dev/urandom of="200-v1.v1" bs=2M count=1
dd if=/dev/urandom of="200-v2.v2" bs=2M count=1
dd if=/dev/urandom of="200-v4.v4" bs=2M count=1
In my case it was just luck. I planed on replacing one by one the V roms, and it turned the first one I replaced was the issue.Yeah I bet that's the issue. How did you go about testing each V rom?
What EEPROM did you replace that with? I've wanted to be able to repair my own games and do fixes like the Metal Slug 2 slowdown fix, but I've had a hard time determining what compatible EEPROMs to replace with the PROM chips.I had this issue with this game too. One of the V roms was bad. I downloaded it, burned it and replaced it with an EEPROM. Worked flawlessly after that.
It depends on the rom being replaced and the size needed. Here are some general suggestions I noted in the past, but not nearly everything:What EEPROM did you replace that with? I've wanted to be able to repair my own games and do fixes like the Metal Slug 2 slowdown fix, but I've had a hard time determining what compatible EEPROMs to replace with the PROM chips.
Curious as to why? I bought a MS2T MVS cart off someone here with no issues to the cart itself, is it something wrong with the code?For Metal Slug 2 Turbo, the original web site for the hack says you need a M27C800 chip. But don't do it. You'll regret hacking up your cart. Just get a flash cart.
Metal Slug 2 - reducing the slowdown
UPDATE 15/05 - DO NOT BUY FROM PEOPLE PRODUCING MODIFIED CARTS, the readme file specifically bans making money from this patch. Since this work is given away entirely for free, a modified cart is worth the same as an unmodified one. If you buy from someone making carts to sell, then you're supportblog.system11.org
Was it an original MS2 cart or a bootleg? I'm just saying I regretted modding a real cart when I can just use a flash cart now. Better to just keep real carts in original condition.Curious as to why? I bought a MS2T MVS cart off someone here with no issues to the cart itself, is it something wrong with the code?
Ah gotcha. I'm pretty sure it was original, but i can see the viewpoint of modifying a real cart.Was it an original MS2 cart or a bootleg? I'm just saying I regretted modding a real cart when I can just use a flash cart now. Better to just keep real carts in original condition.
Thanks for that handy reference. Also idk why I didn't just think about doing it for my NeoSD...late addition and brain wasn't workingIt depends on the rom being replaced and the size needed. Here are some general suggestions I noted in the past, but not nearly everything:
16-bit chips:
M27C800 (1 MB)
M27C160 (2 MB)
27C322 (4 MB)
8-bit chips:
27C1000 (131k)
27C010 (131k)
Pins 2 and 24 need to be swapped for the S rom.
For Metal Slug 2 Turbo, the original web site for the hack says you need a M27C800 chip. But don't do it. You'll regret hacking up your cart. Just get a flash cart.
Metal Slug 2 - reducing the slowdown
UPDATE 15/05 - DO NOT BUY FROM PEOPLE PRODUCING MODIFIED CARTS, the readme file specifically bans making money from this patch. Since this work is given away entirely for free, a modified cart is worth the same as an unmodified one. If you buy from someone making carts to sell, then you're supportblog.system11.org
Yeah if you purchased that cart as fully working, then it should be fully working. Hopefully it finds its way to someone who can repair it.Hallelujah, I’m getting a refund for this.
Thanks to all for the suggestions, but whatever happens with this cart from here is, thankfully, not my problem.