A fun universe scale explorer made with Three.js a few years ago. Forgot to post. https://mattmontag.com/space I'm happy with how the grid shader turned out. It smoothly transitions across grid divisions depending on the zoom level (may be inspired by 3D Studio MAX):
Cosmic Cycles
The Big Bang. The expanding universe. These concepts are fundamental to modern cosmology. But what if the story isn't a linear march from a singular beginning to an inevitable, isolated end? What if, instead, the universe is engaged in an eternal dance of "aeons," each rising from the ashes of the last? This is the […]
Tilemap to Sprite Converter
This is a tool that I vibecoded yesterday with Google Gemini 2.5 Pro. https://mattmontag.com/tilemap.html It works with 8x8 pixel tiles in sequential sprite order (e.g. as exported from MAME with the F4 tileviewer). You click on the top left tile of your sprite in the Tilemap Source, click on "Auto Assemble" and adjust the width/height […]
Yamaha QY300 Backlight Mod
A while back I did a backlight mod on my Yamaha QY300 sequencer. I upgraded the LCD to the ERM24064SYG-1 by EastRising Technology. It has a yellow-green background with 240x64 pixels. Its RA6963 controller is fully compatible with T6963 used in the original QY300 display. The only real issue was a change in sensitivity of […]
BIGCITY.MID
I stumbled on a familiar sounding Nintendo song file from Famicompo 10, 016_UZPIPS.nsfe. It uses the Namco N163 expansion to emulate the FM piano sound. It turns out this is a cover of BIGCITY.MID, one of these early demo General MIDI files meant to showcase the technology. Check it out on chiptune.app. 016_UZPIPS.nsfeby Xyz16th entry […]
Unlocking the Yamaha DSR-2000
I've been trying to reverse engineer the system exclusive voice dump format of the DSR-2000 keyboard. It is powered by the 4-operator Yamaha YM2414 OPZ chip, similar to the DX11, TX81Z, and a few others. The DSR-2000 is probably the most powerful FM keyboard Yamaha produced with the Portasound label (i.e., marketed to non-musicians), and […]
Fixing messed up VGM tracks from Shining Force
This is Elven Town, from Shining Force II for the Sega Genesis. Here's the beginning of the original track: It sounds kind of janky. Computer, isolate the bass line and slow it down to 65%. Yea, definitely some problem with that high note. The Sega Genesis sound chip (YM2612) has 6 FM channels; these bass […]
MEGAfm Teardown
Here is a look inside the Twisted Electrons MEGAfm. It is a nicely constructed boutique synth built around Sega Genesis sound chips. An upper PCB containing LEDs and audio/MIDI jacks has been removed in these photos. The dual YM2612 chips are clearly visible. The microcontroller is visible in the bottom right. The other ICs on […]