This software is for developing Nintendo Sound Format (NSF) files using a graphical editor of your choice. NSF is the real deal; it's basically a Nintendo ROM file which just drives an (emulated) 2A03 sound chip. That means all of the great aliased square wave sounds and 4-bit samples, but it also means all of the limitations of programming for a real 8-bit Nintendo!

midimml works by converting regular MIDI files (with some special annotations) into MML, which is a text-based format used by many NSF developers. The software mckc (available elsewhere; see below) can compile the generated MML into NSF.

Old! midimml 2.0 supports the definition of instruments (collections of MML macros), which allows you essentially all of the power that hand-written MML files have.

midimml comes with documentation, which you can browse here.

In order to do anything, you'll need to set up MCK and related tools as if you were going to be composing MML by hand. These tools may be hard to find now (if you have a good link, let me know). 14 years ago I installed mck from this Japanese web page that's gone now. I also used mckwatch to "watch" the output of midimml, so that every time you run midimml it will automatically generate and play the NSF.

Here it is: Download midimml 2.2 (835kb) for Windows command line.

midimml is free, open source software. You can take a look at the source code and modify it, redistribute it, etc. If you make any useful changes, let me know!

Here are a few songs I made with this program:

Back to Tom 7's Invincible Web Page or to the Tom 7 Entertainment System.

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