YM3812 synth chip?

GerbilSoft · Apr 16, 2004

I found a few old ISA sound cards in networking class that have the YM3812 synth chip. Anyone know any specific details about this chip (such as YM2612 compatibility, etc)?

EDIT: Oh yeah, and even if it is YM2612 compatible, I won't be able to use it on my home computer; I don't have any ISA slots.

Guess Who · Apr 16, 2004

That is a MIDI synth, obviously, from around '89. I've seen it mostly for a Linux, though Sound Blaster used to use it. 11 voices, also known as the OPL2. No idea on the compatability, except not to use it with the YM3625, cause that won't be too good. Other stuff from Wikipedia: "The circuit has 244 different write-only registers. It can produce 25 independent sine waves which may also be modified to mimic triangular wave (sine waves with the negative part turned upward) and sawtooth waves (1/4 sine waves upward only with silent sections inbetween. This odd way of producing waveforms give the YM3812 a characteristic sound. Each wave generator has its own amplitude modulator. " That is my YM3812 report for tonight.

GerbilSoft · Apr 17, 2004

guess_who said:

That is a MIDI synth, obviously, from around '89. I've seen it mostly for a Linux, though Sound Blaster used to use it. 11 voices, also known as the OPL2. No idea on the compatability, except not to use it with the YM3625, cause that won't be too good. Other stuff: The circuit has 244 different write-only registers. It can produce 25 independent sine waves which may also be modified to mimic triangular wave (sine waves with the negative part turned upward) and sawtooth waves (1/4 sine waves upward only with silent sections inbetween. This odd way of producing waveforms give the YM3812 a characteristic sound. Each wave generator has its own amplitude modulator. That is my YM3812 report for tonight.
Click to expand...

Nice partial copy and paste there. :P

http://en.wikipedia.org/wiki/Yamaha_YM3812

Alexbt · Apr 17, 2004

Well.. it's the 2612 is an ancestor to it. :P

http://en.wikipedia.org/wiki/YM2612

Guess Who · Apr 17, 2004

Hey, I didn't feel like typing all that stuff. What can I say?

EDIT: Oh yeah, and even if it is YM2612 compatible, I won't be able to use it on my home computer; I don't have any ISA slots.
Click to expand...

Even if you did, if you wanted to use a YM2612, get a used Genesis/Mega Drive and rip it out. Actually, I have an opened up Genesis in my room right now, missing the power button. I could send it to you if you don't want to ruin a Genesis.

saxman · Apr 25, 2004

That chip is nothing at all like the 2612. You need a DX-compatible chip -- like the 2612 or 2203. The Yamaha synthesizers use others.... like the OPL, OPS, etc.

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YM3812 synth chip?

GerbilSoft

Guess Who

GerbilSoft

Alexbt

Guess Who

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