SpritesMind.Net

So how did you obtain 3v for your virtual ground? just a 6v reg with a resistor? how many buffers and virtual grounds could I power with 1x 6v reg?

Also, how would wone work out the final voltage output with all these op amps and resistors in the way? I added a resistor and a virtual ground to the ...

Thanks to Jorge Nuno from Sega-16 forums

Link:
http://www.sega-16.com/forum/showthread.php?p=245973#post245973

The output impedance of the YM2612 is 1kOhm or more IIRC, you really should use a voltage follower/or a non-inverting amplifier configuration.
I don't remember it's output level, I could ...

Could someone please help me find the output impedance values for ym2612, Ricoh RF5C164 and the sound processing chip found on the 32x (name unknown to me)

Perhaps it would be a better idea to use a new amp to boost the 12dB output from YM2612 to something equal to the 32x and megaCD outputs.

I ...

I wish I had the luxury to use the MD2 mobo, but I already have the origional SegaCD and MD1... Unless I should find a MD2 mobo and put it in the MD1 case... but I have never heard of that being done.

is there a way to measure exactly the strength of the signal comming from the MD1 circuit plus mCD ...

Could someone please mark this up?

I havn't much clue what I am doing... but I was following summing junction logic: http://www.eecs.tufts.edu/~dsculley/tut ... amps7.html

The stuff in red is what I am unsure about.

apologies to be a drag on your/forums time, but what is VA0~4?

also could you hit me a link with info on buffering and how one would go about designing one?

what sort of output strengths are comming out of the real ym2612, the 32x and megacd1?

thanks again and sorry for being a noob... but I ...

so where is ym2612 on the md2?

if the chip ym2612 is both on the model 1 and 2, can this design be made to fit the md1? if not why?

So the circuit used for the cirrius cs5361 be connected directly to the outputs to ym2612 on the md1?

what do you guys think would be a good way to mix the 32x and ...

It does clearly say that on the drafted version of that schematic that Tiido made, but I know from looking at his origional sketch, that it was designed for YM2612 which is the sound chip found on the model 1 right?

http://arcade.ym2149.com/megadrive/md1_pcb_partside.jpg photo of MD1 PCB

http ...

Hi

First post... so I will just roughly introduce myself.

My name is Brendan, and I am a Mechanical Engineer by nature... but lately I have had a growing interest in electronics. I have now recently modded my Sega Saturn, and now I'm hooked!

However, I have very very little experience... and to ...