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Topic: YM3812

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	Yamaha YM3812 - Wikipedia, the free encyclopedia
		The Yamaha YM3812 also known as the OPL2 (OPL is an acronym for FM Operator Type-L) is a sound chip (i.e.
		Each oscillator can produce sine waves which may also be modified into 3 other waveforms - the negative part of the sine can be muted or inverted, and pseudo sawtooth waves (1/4 sine waves upward only with silent sections in between) can also be produced.
		This odd way of producing waveforms give the YM3812 a characteristic sound.
	en.wikipedia.org /wiki/Yamaha_YM3812 (339 words)

	Yamaha YM3812
		The Yamaha YM3812 also known as the OPL2 is a sound chip (i.e.
		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.
		Brought to you by TravelSources and the Beaches and Towns Network, LLC.
	www.teachtime.com /en/wikipedia/y/ya/yamaha_ym3812.html (129 words)

	REBELS Recent News
		The ym3812 emulator may not be sold, or sold as a part of a commercial package without the express written permission of
		Modified versions of the ym3812 emulator may not be publicly redistributed without author approval (carl@c64.org).
		You may make your own source modifications and distribute the ym3812 emulator in source or object form, but if you make modifications to the ym3812 emulator then it should be noted in the top as a comment in ym3812.h and ym3812.c.
	www.rebels.dk /ym3812 (620 words)

	Yamaha YM3812 - TheBestLinks.com - Acronym, Frequency modulation synthesis, IBM PC, Integrated circuit, ... (Site not responding. Last check: 2007-10-12)
		Yamaha YM3812 - TheBestLinks.com - Acronym, Frequency modulation synthesis, IBM PC, Integrated circuit,...
		Yamaha YM3812, Acronym, Frequency modulation synthesis, IBM PC, Integrated...
		Each oscillator can produce sine waves which may also be modified into 3 other waveforms - the negative part of the sine can be muted or inversed, and pseudo sawtooth waves (1/4 sine waves upward only with silent sections inbetween) can also be produced.
	www.thebestlinks.com /Yamaha_YM3812.html (375 words)

	Takashima & Co., Ltd. Super Sonic 8 bit ISA card
		I am pretty sure I have heard sound from both the YM3812 OPL2 and the Y8950 MSX-AUDIO (or at least their corresponding DACs) as sometimes the instruments have the extra waveforms of the OPL2 and sometimes they don't (when they ought to) indicating the MSX-AUDIO is being used.
		Finally, the YM3812 OPL2 aspect of the card is also interesting, as you may know that YM2413 OPLL is in fact a register-incompatible subset of this chip and not the earlier YM3526 OPL.
		If so, then the Super Sonic is something of a HardMoonBlaster card as it has both the Y8590 MSX-AUDIO and the YM3812 OPL2 which might be able to emulate YM2413 OPLL for all but the most tricky forms of hardware instrument switching.
	www.mail-archive.com /msx@stack.nl/msg18537.html (526 words)

	Treble Winner's FBA WIP Drivers
		Relatively simple - the only pain in the arse was the sprite decoding.
		The driver is complete and only took about 6 hours to finish.
		There is no sound emulation due to a lack of emulation of the YM3812 and the UPD7759 sound chips.
	fbl.emuunlim.com (409 words)

	[No title]
		A disadvantage of FM synthesis is that it is quite difficult to produce realistic sounding instruments, especially when playing high pitched notes (reeds, guitar, etc.).
		The Adlib was the first soundcard that used this technique, using a Yamaha YM3812 FM chip with two operators.
		The first SB-pro was also equipped with 2 YM3812 chips, but the newer versions (SB-pro 2.0 and up) containes the new OPL-3 chip.
	archive.cs.uu.nl /pub/MIDI/DOC/Soundcards (3497 words)

	::: larwe.com - dragon ninja (bad dudes) :::
		This DECO boardset uses a 6502 driving a YM3812 FM synthesizer, and probably an ADPCM chip for the sound effects.
		This scene is one of two levels in which you're walking along the top of a chain of moving objects (the other level has you walking along a long articulated truck).
		The only audio device I can positively identify is a Yamaha YM3812 OPL2 FM synthesizer (as used in the old PC AdLib card).
	www.larwe.com /coinop/dragonninja.html (442 words)

	Yamaha YM2612 - Wikipedia, the free encyclopedia
		YM2612 is a 6 channel FM synthesis (Frequency Modulation) sound synthesizer IC produced by Yamaha.
		It belongs to a family of Yamaha FM synthesizer chips, and can be considered an ancestor to the OPL2 (YM3812) and OPL3 (YMF262) FM ICs that were used in the popular AdLib and Creative Labs SoundBlaster PC soundcards.
		The YM2612 was notably used in the Sega Mega Drive (aka Sega Genesis) game console and has the following features:
	en.wikipedia.org /wiki/YM2612 (233 words)

	Sound card (Site not responding. Last check: 2007-10-12)
		There are however some sound cards aimed specifically at music synthesis and MIDI interfacing which lack any "real" sound recording capabilities, such as some Turtle Beach and Roland MT32 products, which were however aimed at a specific market and are designed for professional high-quality MIDI music playback.
		One of the first manufacturers of sound cards for the IBM PC was AdLib, who produced a card based on the Yamaha YM3812 sound chip, aka the OPL2.
		Contrary to popular belief, the Sound Blaster didn't overtake AdLib due to the inclusion of digital sound as a feature.
	www.worldhistory.com /wiki/S/Sound-card.htm (844 words)

	MAWS - showing driver: nbmj9195.c
		[Jan/22/2001] Mahjong MEDAL Janjan Baribari (c)1992 Nihon Bussan CPU: TMPZ84C011BF-6 Sound: TMPZ84C011BF-6 YM3812 DAC x2 OSC: 8.000MHz 12.000MHz 25.000MHz Custom: NB19010 x2 11.7C main prg.
		[Jan/08/2001] Mahjong Pachinko Monogatari (c)1992 Nihon Bussan CPU: TMPZ84C011BF-6 Sound: TMPZ84C011BF-6 YM3812 DAC x2 OSC: 8.000MHz 12.000MHz 25.000MHz Custom: NB19010 x2 1.7C main prg.
		[Jan/29/2002] Mahjong Wakuwaku Catcher (c)1993 Nihon Bussan CPU: TMPZ84C011BF-6 Sound: TMPZ84C011BF-6 YM3812 DAC x2 OSC: 8.000MHz 12.000MHz 25.000MHz Custom: NB19010 x2 1.7C main prg.
	www.mameworld.net /maws/driverinfo/nbmj9195.c (827 words)

	Olli Niemitalo - Engineering (Site not responding. Last check: 2007-10-12)
		Actually, it's not a Hilbert transform, but two all-pass IIR filters whose phase difference is approximately 90 degrees over a range of frequencies symmetric around Nyquist/2.
		Adlib is a classic PC sound card which used the YM3812 chip.
		Here you will find information on how to build a device capable of capturing sound digitally from YM3812.
	www.biochem.oulu.fi /~oniemita/dsp (440 words)

	The world's top sound blaster websites
		In the beginning, the Sound Blaster was built entirely around the Yamaha YM3812 sound chip from Yamaha Corporation.
		The first Sound Blaster (November 1989) featured 11-voice FM synthesis using the Yamaha YM3812 chip, also known as OPL2.
		In addition the card also featured a digital signal processor that could also play back monaural sampled sound.
	dirs.org /wiki-article-tab.cfm/sound_blaster (975 words)

	Secret Weapons of Commodore: The SFX Series: SFX Sound Expander, Sound Sampler, Music Maker, External Keyboard
		The AdLib programming manual above contains how to generate sounds through the YM3812 chip in the AdLib card, and much of the register mapping also applies to the Sound Expander's YM3526 except, naturally, for the advanced features of the OPL2 that the YM3526 does not support.
		Richard Atkinson explains that the YM3812 OPL2 may be substituted directly for the YM3526.
		(The 3812 adds multiple waveforms and a 'drum mode' according to Magnus.) The pinouts and voltage requirements are identical, and the extra registers in the YM3812 are available once enabled through their select register; the YM3812 is also, naturally, completely software compatible with the YM3526.
	www.floodgap.com /retrobits/ckb/secret/sfx.html (2524 words)

	CAESAR - Snow Bros. - Nick & Tom (set 1)
		Correct Z80 CPU2 clock speed to 6MHz and YM3812 to 3MHz and VSync to 57.5 Hz.
		- 0.36b14: Correct YM3812 clock speed to 3579545 Hz.
		- 0.36b2: Tatsuyuki Satoh make further improved the YM3812 emulator, especially the rhythm section (check Snow Bros!).
	caesar.logiqx.com /php/mameinfo.php?id=snowbros (395 words)

	MAME - Status - WIP news, March 2002
		2002-03-26: Jarek Burczynski did a major improvement on the YM3812 sound chip emulation, making it much more accurate than before by comparing its output with the real chip.
		Matthew Neja added the correct color PROM for Crush Roller and fixed the DIP switch settings in the VSNES driver.
		Olivier Galibert found the correct shift register operations for noise generators for both SN76489 (with thanks to John Kortink for information) and YM3812.
	www.mame.net /wip0203.html (1170 words)

	Re: Driver for YAMAHA YM3812 (ISA) sound card
		In Reply to: Re: Driver for YAMAHA YM3812 (ISA) sound card posted by Edwin Santos on October 20, 2000 at 18:30:03:
		: : Has anyone got the driver for Yamaha YM3812...
		: : : Has anyone got the driver for Yamaha YM3812...
	www.driverforum.com /sound/5346.html (194 words)

	Creative Sound Blaster
		Its sound can be recorded to hard disk or otherwise processed (for example, by speech recognition software or for Voice over IP).
		This set the de facto-standard until Creative Labs produced the Sound Blaster card, which had a YM3812 plus a digital signal processor.
		Early soundcards could not record and play simultaneously.
	www.gamedirt.com /creative-sound-blaster.htm (764 words)

	See ad lib ad lib for information on the Latin... (Site not responding. Last check: 2007-10-12)
		It was the first de facto de facto standard standard for sound cards on IBM PC IBM PCs.
		AdLib used the Yamaha YM3812 Yamaha YM3812 sound chip sound chip from Yamaha Corporation Yamaha Corporation.
		AdLib was quickly replaced as the standard by Sound Blaster Sound Blaster from Creative Labs Creative Labs.
	www.biodatabase.de /AdLib (169 words)

	Raiden Forum
		Usually I prefer only doing logs from 100% accurate/compatible (e.g.
		- YM3812 hardware emulation on the OPL chip) sound sources.
		And trust me when I say I am doing everything possible to make it the exact and monitored sound of the arcade chip on the YM3812 Toaplan games.
	www.network54.com /Forum/message?forumid=52937&messageid=988656515 (150 words)

	biology - OPL
		OPL might be an acronym or abbreviation for:
		FM Operator Type-L, used in the Yamaha chips YM3526, YM3812 and YMF262.
		Optique & Précision de Levallois, the optical company
	www.biologydaily.com /biology/OPL (51 words)

	[No title] (Site not responding. Last check: 2007-10-12)
		/* * sound/opl3.c * * A low level driver for Yamaha YM3812 and OPL-3 -chips / / * Copyright (C) by Hannu Savolainen 1993-1996 * * USS/Lite for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) * Version 2 (June 1991).
		See the "COPYING" file distributed with this software * for more info.
		TIMER2_MASK); /* Reset the IRQ of the FM chip / opl3_command (ioaddr, TIMER_CONTROL_REGISTER, IRQ_RESET); if ((stat2 & 0xE0) != 0xc0) { return 0; / * There is no YM3812 / } / * There is a FM chip in this address.
	www.turing.toronto.edu /~brewste/bkshelf/linux2/src/V2.0.27a/linux/drivers/sound/opl3.c (1278 words)

	HCF Modem, Help : LinuxQuestions.org time based Linux archive
		YM3812 and OPL-3 driver Copyright (C) by Hannu Savolainen, Rob Hooft 1993-1996
		Splash status on console 0 changed to off
		Conexant Sound Driver v0.4mbsibeta02110300 time 22:57:16 Nov 3 2002
	www.linuxquestions.org /questions/archive/18/2002/11/4/35644 (1713 words)

	Sound System: Description of Yamaha OPL3 and OPL2 Chips (89877) (Site not responding. Last check: 2007-10-12)
		Sound System: Description of Yamaha OPL3 and OPL2 Chips (89877)
		The Yamaha OPL3 synthesis chip (YMF262) is backward-compatible with the Yamaha OPL2 synthesis chip (YM3812), the synthesis chip used in Adlib and Adlib-compatible boards.
		The OPL3 chip supports more complex waveforms, more voices, and stereo sound.
	www.it-faq.pl /mskb/89/877.HTM (146 words)

	[No title]
		- Added software YM3812 emulator, provided by Carl-Henrik Skaarstedt/DSC!
		- Added sample rate and YM3812 switches in gui.
		Richard Mitton (nodrog) ----------------------- Added Plotting emulation, help with YM2151 for Rainbow Islands and a more complete opl YM3812.
	www.retrogames.com /multi/raine018.txt (1463 words)

	CAESAR - Seibu Cup Soccer (set 2)
		Sound Chips : YM3812 (@ 3.579545 Mhz), OKI6295 (@ 8 Khz)
		Screen refresh : 60.00 Hz Palette Colors : 2048
		Seibu Cup Soccer's bootleg version don't uses the YM3812 @ 3.579545 Mhz :-)
	caesar.logiqx.com /php/history.php?id=cupsoc2 (60 words)

	[No title]
		+ / + + / High Hat (verified on real YM3812) */ + env = volume_calc(SLOT7_1); + if(env
		wavetable) * 2; + } + + /* Tom Tom (verified on real YM3812) */ + env = volume_calc(SLOT8_1); + if(env
		Cnt, env, 0, SLOT->wavetable) * 2; + + /* Top Cymbal (verified on real YM3812) */ + env = volume_calc(SLOT8_2); + if(env
	dosemu.sourceforge.net /stas/opl1c.diff (1813 words)

	[No title]
		: - First YM3812 emulator development Ken Silverman
		wavetable) * 2; } - if((VIB_TABLE = malloc(VIB_ENT2 sizeof(INT32))) == NULL) + + /* Tom Tom (verified on real YM3812) */ + env = volume_calc(SLOT8_1); + if(env
		Cnt, env, 0, SLOT8_1->wavetable) * 2; + + /* Top Cymbal (verified on real YM3812) */ + env = volume_calc(SLOT8_2); + if(env
	www.informatik.uni-oldenburg.de /~dyna/adplug/files/adplug-mame-1.5.1.patch (2287 words)

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