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Denjhang's Retro Hardware
STM32-RESPFM - 4 Slots Modular Chiptune Host / Chiptune Hardware
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STM32-RESPFM - 4 Slots Modular Chiptune Host

$99.00


What is it?

Project RE-birth 2nd is the spiritual continuation of Project RE-birth.

In 2021, for unknown reasons, the Japanese closed the ym2203.com website, deleted all public schematics, and stopped the distribution of all peripheral hardware. This makes me feel very regretful and annoyed — even if I have money, I can't buy any SPFM motherboard or rebirth module.

In the absence of original hardware, I forked almost all RE-birth music modules to really revive this project. My intention was to make FM music chips available to people all over the world — no internal meetings, no internal stores, no hunger marketing, long-term stock.

By copying the rebirth module, I learned a lot, such as the bus layout of rebirth, digital-to-analog isolation, single-power audio amplifier design, and standardized module appearance. It can be said that it is as worth learning as a textbook.

YM2203 sound card suitable for SPFM series. The circuit is redesigned by myself and is compatible with RE:birth bus. You can use it with SPFM Light, SPFM Lite, RESPFM, IAP-RESPFM and STM32-RESPFM.

Supported Chips

  • OPL: YM3526, Y8950
  • OPL2: YM3812, YM3812-F, U6612
  • OPLL: YM2413, YM2413-F, YM2413B, YM2413B-F
  • OPLL Clone: 2413, MY2413, YM2413 THINK, UM2413, UM3567, U3567
  • OPL3: YMF262, YMF289
  • OPN: YM2203
  • OPN3: YMF288
  • PSG: AY8910, YM2149, JFC95101, KC89C72, YMZ284

Music Modules

  • RE2-YMF262
  • RE2-YM3812/3526
  • RE2-YM2413
  • RE2-PSG/SSG+SSGL
  • RE2-YMF276/288/289
  • RE2-YM2203
  • RE2-YM2608
  • RE2-YM2151
  • RE2-YM2612/3438+SN76489

Currently the STM32 motherboard supports YM2608/2612/2151/SN76489.

Compatible Mainboards

  • SPFM Lite (2 slots)
  • IAP-RESPFM (4 slots)
  • STM32-RESPFM (4 slots)

About STM32-RESPFM

Based on STM32F103C8 Blue Pill, after several months of iterative updates, it now supports all music modules, including YM2612+SN76489, and fixes the SCCI SN noise bug from the hardware level. It also supports YM2608, and ADPCM can be loaded correctly. The hardware structure is relatively simple, and the source code is open — welcome to modify.

It supports the use of four modules at the same time and is very stable.

Why Did I Make It?

I referred to the ps98-YM2203 schematic and pictures of the original rebirth module, as well as the SPFM Tower schematic. My dream: to make SPFM and rebirth modules available to everyone in the world. No internal meetings, no mystery shops, fair play to all.

What Makes It Special?

Simple appearance, with YM2203 logo and parameters, using the classic universal dual operational amplifier NE5532, with adjustable volume, excellent sound quality, good digital-analog isolation, and completely follows the design soul of Project RE:birth.

The design of the rebirth module is very excellent, pursuing the ultimate sound quality, standardized appearance, reasonable bus layout and ground plane isolation. Just like a textbook, I completed all this in accordance with the design spirit of rebirth.

In particular, RE2-YM2203 supports stereo PSG, and the stereo configuration can be freely adjusted through the three-position switch. This is my original design.