Neo TeAm Forum

NEO Team's Project for SEGA MK3/MD5/32X => NEO SUPER MK3/MD5/32X 3in1 Flash Cart => Topic started by: timofonic on July 14, 2006, 11:10:35 PM

Title: How it's implemented SMS FM on a Megadrive cart?
Post by: timofonic on July 14, 2006, 11:10:35 PM
Hello,

I was really surprised when knowing that the Neoflash Genesis cart has SMS FM compatibility, I didn't know it was possible!

It could be interesting if you explain a bit why is possible to do, it seems like a great challenge.

Quote
Very interesting. You wouldn't happen to know anything about -how- it plays FM, do you? Does it attempt to map YM2413 commands to the YM2612, or does it have a real YM2413 onboard? I wouldn't know how successful the former would be--- each chip has some unique features not supported in the other chip, and I'm not sure how the audio pass-through would work in the latter, but I'm intrigued.
Replied by Heliophobe (smspower.org site admin)

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The Mega Drive can mix in audio from the cartridge slot, so they have a YM2413 (or one of the recent almost-compatible clones) on the cart connected to those lines. If I had a Mega Drive I'd get one.
Replied by Maxim (http://www.smspower.org/maxim/) (smspower.org site admin and with a great sms dev page)

(Taken from HERE (http://www.smspower.org/forums/viewtopic.php?t=8958))


Here (http://www.smspower.org/forums/viewtopic.php?t=6911&highlight=ym2413) is some info about adding FM to SMS.