computer science

Yamaha YM2164

Yamaha YM2164 is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Yamaha YM2164 rather than just read about it. In short: The Yamaha YM2164, a.k.a. OPP (FM Operator Type P), is an FM synthesis sound chip developed by Yamaha, an enhanced version of their YM2151 (a.k.a.

Key takeaways

Yamaha YM2164 belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Yamaha YM2164 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Yamaha YM2164 from memory before moving on to harder problems.

Reference excerpt

The Yamaha YM2164, a.k.a. OPP (FM Operator Type P), is an FM synthesis sound chip developed by Yamaha, an enhanced version of their YM2151 (a.k.a. OPM). The OPP was used in various MIDI-based synthesizers by Yamaha - DX21, DX27, DX100, SFG-05, FB-01 (a standalone SFG-05) - plus several licensed products: the IBM Music Feature Card (which is effectively an FB-01 on an ISA card) and Korg's DS-8 and Korg 707. The YM2164 has the following features:

Eight concurrent FM synthesis channels (voices) that may all be set to different timbres Four operators per channel, all generating sine waves at configurable frequencies and powers Eight options for routing those four operators to perform FM synthesis (via phase modulation) or simple additive synthesis A low frequency oscillator running 1 of 4 waveforms, mappable to pitch on a per-channel basis and/or amplitude on a per-operator basis Compared to the OPM, the OPP has the same pinout and functional features but some minor changes to control registers. Differences are the test register address (9) and 8 undocumented registers (0-7). Due to how the FB-01 and IBM MFC hardware use those registers, swapping an OPM into these hosts does not operate correctly. While the OPP was available for use by IBM and Korg, the chips were unavailable for purchase outside of Yamaha, compared to the almost identical and widely available OPM, which found its way into countless arcade game PCBs from the 1980s to 1990s as well as some home computers such as the X1 and X68000.

See also Yamaha CX5M Yamaha YM2151 Yamaha YM3812 Yamaha YM2413

References

External links Yamaha FB-01 Service Manual (fdiskc.com) Yamaha YM chips numerical classification (vorc.org) Comprehensive list with descriptions of Yamaha chips used in synthesizers (dtech.lv)

Illustrations

Worked examples

Example 1 — a first encounter with Yamaha YM2164

Start with the simplest possible case. Write down what Yamaha YM2164 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Yamaha YM2164 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Yamaha YM2164 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Yamaha YM2164

In research: Yamaha YM2164 appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Yamaha YM2164 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Yamaha YM2164 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer hardware stubs, Yamaha sound chips, so understanding it makes those chapters shorter.
In everyday life: Look for Yamaha YM2164 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Yamaha YM2164 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Yamaha YM2164 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Yamaha YM2164 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Yamaha YM2164 in simple terms?

The Yamaha YM2164, a.k.a. OPP (FM Operator Type P), is an FM synthesis sound chip developed by Yamaha, an enhanced version of their YM2151 (a.k.a.

Why does Yamaha YM2164 matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Yamaha YM2164?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Yamaha YM2164.