opl3 | OPL3 emulator usable as a CLI tool or as a library | Emulator library

by doomjs JavaScript Version: 0.4.3 License: No License

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | opl3 Summary

opl3 is a JavaScript library typically used in Utilities, Emulator applications. opl3 has no bugs, it has no vulnerabilities and it has low support. You can install using 'npm i opl3' or download it from GitHub, npm.

OPL3 emulator usable as a CLI tool or as a library. Ported from Yamaha YMF262 (OPL3) Emulator by Robson Cozendey.

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Quality

Security

License

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Support

opl3 has a low active ecosystem.

It has 14 star(s) with 3 fork(s). There are 1 watchers for this library.

It had no major release in the last 12 months.

There are 1 open issues and 1 have been closed. On average issues are closed in 4 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of opl3 is 0.4.3

Quality

opl3 has no bugs reported.

Security

opl3 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

opl3 does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

opl3 releases are available to install and integrate.

Deployable package is available in npm.

Installation instructions are not available. Examples and code snippets are available.

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opl3 Key Features

No Key Features are available at this moment for opl3.

opl3 Examples and Code Snippets

No Code Snippets are available at this moment for opl3.

Community Discussions

Trending Discussions on opl3

Is there a significant difference between outportb and the out instruction in 8086 assembly?

QUESTION

Is there a significant difference between outportb and the out instruction in 8086 assembly?

Asked 2019-Jun-02 at 16:59

I am coding in old, 1994 era DOS for game programming fun, and am outputting data from a RAD file into the OPL3 FM Synthesis chip. I'm running off of DOSBox.

In a bid to increase performance when dealing with hardware registers (especially since I am updating the FM Synth chip through a timing interrupt (to keep tempo) and want to get back into main code as quickly as possible) I thought to rewrite my register outputting in assembly.

However, while this works, it seems to introduce distortion in the synth chip's output that isn't present when I use pure C's outportb, and I figured I'd ask here to see if anyone could tell me what's going on. Is there a particular, subtle difference between 'out dx,al' and 'outp(int, char)' that I'm missing?

...

ANSWER

Answered 2019-Jun-02 at 16:59

There is one main difference in the C and the assembler program:

I don't know your C compiler's library, but outp() is either equivalent to out dx,ax or to out dx,al.

(I would guess that it is equivalent to out dx,al.)

However, in your assembler program you are sometimes replacing outp() by out dx,ax and sometimes by out dx,al. One of both must be wrong.

If a real sound card has an 8-bit ISA connector and outp() is equivalent to out dx,al, the following assembler code:

Source https://stackoverflow.com/questions/56416630

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install opl3

You can install using 'npm i opl3' or download it from GitHub, npm.

Support

The OPL3 library includes GENMIDI lump from shareware Doom as the default instrument set. You can override this in the CLI tool and in the Player class as well. Use opl3 doom2/*.mus --genmidi DOOM2.OP2 to inject the DOOM2.OP2 GENMIDI lump file into the MUS format handler.

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