The Yamaha YM2151, also known as OPM (FM Operator Type-M) is an eight-channel, four-operator sound chip. It was Yamaha's first single-chip FM synthesis implementation, being created originally for some of the Yamaha DX series of keyboards (DX21, DX27, and DX100 [1] ). Yamaha also used it in some of their budget-priced electric pianos, such as the YPR-7, -8, and -9.
The YM2151 was used in many arcade game system boards, starting with Atari's Marble Madness in 1984, then Sega arcade system boards from 1985, and then arcade games from Konami, Capcom, Data East, Irem, and Namco, as well as Williams pinball machines, with its heaviest use in the mid-to-late 1980s. It was also used in Sharp's X1 and X68000 home computers, and in the modern hobbyist 8-bit computer Commander X16 [2] [3]
The chip was used in the Yamaha SFG-01 and SFG-05 FM Sound Synthesizer units. These are expansion units for Yamaha MSX computers and were already built into some machines such as the Yamaha CX5M. Later SFG-05 modules contain the YM2164 (OPP), an almost identical chip with only minor changes to control registers. [4] The SFGs were followed by the Yamaha FB-01, a standalone version powered exclusively by the YM2164.
The YM2151 was paired with either a YM3012 stereo DAC or a YM3014 monophonic DAC so that the output of its FM tone generator could be supplied to speakers as analog audio. [5]
Frequency modulation synthesis is a form of sound synthesis whereby the frequency of a waveform is changed by modulating its frequency with a modulator. The (instantaneous) frequency of an oscillator is altered in accordance with the amplitude of a modulating signal.
The YM2612, a.k.a. OPN2, is a sound chip developed by Yamaha. It is a member of Yamaha's OPN family of FM synthesis chips, and is derived from the YM2203.
The X68000 is a home computer created by Sharp Corporation. It was first released in 1987 and sold only in Japan.
OPM may refer to:
The CP System is an arcade system board developed by Capcom that ran game software stored on removable daughterboards. More than two dozen arcade titles were released for CPS-1, before Capcom shifted game development over to its successor, the CP System II.
The YM2413, a.k.a. OPLL, is a cost-reduced FM synthesis sound chip manufactured by Yamaha Corporation and based on their YM3812 (OPL2).
MDX is a Music Macro Language (MML) based format designed to be played on the X68000 series of computers. The music data is programmed then compiled into the MDX file. An optional PDX file containing PCM data may be present.
Sky Kid Deluxe is a horizontally scrolling shooter released in arcades by Namco in 1986. It is the sequel to Sky Kid, which was released in the previous year. It was the first game to run on the company's System 86 hardware. It was also the first game from the company to use a Yamaha YM2151 FM sound chip for its music. The gameplay is more difficult than the original, and also introduces several new enemies and missions.
The Midway T Unit is an arcade system board designed by Midway and successor to the Midway Y Unit.
The Williams Pinball Controller (WPC) is an arcade system board platform used for several pinball games designed by Williams and Midway between 1990 and early 1999. It is the successor to their earlier System 11 hardware. It was succeeded by Williams/Midway's Pinball 2000 platform, before Williams left the pinball business in October 1999.
Atari System refers to two arcade system boards introduced in 1984 for use in various arcade games from Atari Games. Two versions of the board were released, Atari System 1 and Atari System 2.
The YM2203, a.k.a. OPN, is a six-channel sound chip developed by Yamaha. It was the progenitor of Yamaha's OPN family of FM synthesis chips used in many video game and computer systems throughout the 1980s and early 1990s. It was used in a variety of NEC computers, along with various arcade game machines.
The YM2608, a.k.a. OPNA, is a sound chip developed by Yamaha. It is a member of Yamaha's OPN family of FM synthesis chips, and is the successor to the YM2203. It was notably used in NEC's PC-8801/PC-9801 series computers.
The Yamaha YM2164, a.k.a. OPP, is an FM synthesis sound chip developed by Yamaha, an enhanced version of their YM2151. The OPP was used in various MIDI-based synthesizers by Yamaha - DX21, DX27, DX100, SFG-05, FB-01 - plus several licensed products: the IBM Music Feature Card and Korg's DS-8 and Korg 707.
The YM2610, a.k.a. OPNB, is a sound chip developed by Yamaha. It is a member of Yamaha's OPN family of FM synthesis chips, and related to the YM2608.
The Yamaha YMF278, also known as the OPL4, is a sound chip that incorporates both FM synthesis and sample-based synthesis by Yamaha.
Yamaha CX5M is an MSX-system compatible computer that expands upon the normal features expected from these systems with a built-in eight-voice FM synthesizer module, introduced in 1984 by Yamaha Corporation.
The Yamaha DX21 is a digital controlled bi-timbral programmable digital FM synthesizer with a four operator synth voice generator which was released in 1985. It uses sine wave-based frequency modulation (FM) synthesis. It has two FM tone generators and a 32-voice random-access memory (RAM), 32 user voices and 128 read-only memory (ROM) factory preset sounds. As a programmable synth, it enables users to create their own unique synthesized tones and sound effects by using the algorithms and oscillators. The instrument weighs 8 kg (17.6 lbs). On its release, it sold for $795.
The OPL series are a family of sound chips developed by Yamaha. The OPL series are low-cost sound chips providing FM synthesis for use in computing, music and video game applications.