Genesis YM2413 mod.. How to?

[AlecRob]

Does anybody have a guide on how I could install a YM2413 chip in my genesis for use in master system games? I've heard it's possible but I can't seem to find out how to do it. Also, what's a reliable source for YM2413 chips? (if there is one)

[TmEE]

YM2413 is esy to find as long as you accept cloned chips which can have noisy output and slight tonality differences.

http://www.fileden.com/files/2008/4/...M2413SCHEM.jpg

It needs to be buffered, otherwise you will most likely get random lockups etc. especially in MCD games.

[AlecRob]

I have a US model 1 (HDG with ext port on the back) by the way. (I haven't checked what the exact revision is yet)
Will this mod work o my genesis? Or would it have to be changed at all?

[TmEE]

I don't think you're up to adding the YM yourself. Adding a buffer is a modification plus you got to adjust YM output level for MD1 sound setup

[AlecRob]

Would it be possible to just mod a PBC with a YM2413? I'm pretty sure the neo myth has one init so it seems like it should be possible.

[Guntz]

You could but apparently there's very little room inside the PBC.

[AlecRob]

So I guess my options are: do a complicated, pain in the ass genesis mod, a simpler but also pain in the ass PBC mod, buy a Japanese master system, mod a US master system, wait for FM support on mega everdrive, or buy a neomyth.

I wish they had just included that damn chip in the US SMS. That would make everything so much easier. :P

[TmEE]

I wish they had just included that damn chip in the US SMS. That would make everything so much easier. :P

I would have loved that... sound is the only thing that SMS is really shit at compared to NES

[80sFREAK]

YM2413 is esy to find as long as you accept cloned chips which can have noisy output and slight tonality differences.

http://www.fileden.com/files/2008/4/...M2413SCHEM.jpg

It needs to be buffered, otherwise you will most likely get random lockups etc. especially in MCD games.

Nice! Have some original YM2413, so put this mod on my "to do" list

[Chilly Willy]

So I guess my options are: do a complicated, pain in the ass genesis mod, a simpler but also pain in the ass PBC mod, buy a Japanese master system, mod a US master system, wait for FM support on mega everdrive, or buy a neomyth.

I wish they had just included that damn chip in the US SMS. That would make everything so much easier. :P

If you have a US SMS, you have another choice - the SMS Myth cart also has the YM2413 in it. That gives your SMS FM music just like the Japanese model. Going that way is handy because you can also play all those old SG-1000 games via the Myth on the SMS where those don't work on the MD in SMS mode due to the missing video modes.

[lumclaw]

Another potential option, is it's believed possible to make a converter for connecting FM unit on SMS. Except no one has yet actually attempted that.

Rear expansion port should have enough pins. It'd also likely enable SG-1000 keyboard in the process (same port).

[sheath]

So I guess my options are: do a complicated, pain in the ass genesis mod, a simpler but also pain in the ass PBC mod, buy a Japanese master system, mod a US master system, wait for FM support on mega everdrive, or buy a neomyth.

I wish they had just included that damn chip in the US SMS. That would make everything so much easier. :P

viletim over at SMSPower knows how to mod the PBC, the Game Gear or the Megadrive/Genesis, he suggested it to me before I bought his expansion for the Master System. I think now all he sells are expansion ports for Japanese Master Systems, so they will play US carts out the backside.

[Ace]

Nice! Have some original YM2413, so put this mod on my "to do" list

What's the date code on your chip(s)? Beware of YM2413s with date codes 93xx xxxx and newer; many (all?) of them are fake (I got screwed over with the YM2413 multiple times and now have 5 fakes, one made in 1993, 3 made in 1998 and one made in 2001, which is a YM2413B and doesn't even work properly, and a real YM2413 made in 1991 which doesn't work at all... fuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu...).

[ApolloBoy]

I think now all he sells are expansion ports for Japanese Master Systems, so they will play US carts out the backside.

Those haven't been sold in a long time, he still sells the FM boards and he recently got a new batch in.