SPFM Lite - Serial Port FM Lite Edition
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 artificial scarcity, 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 other motherboards.
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
- OPM: YM2151
- OPZ: YM2414
- OPN: YM2203
- OPN2: YM2612, YM3438, YMF276
- OPNA: YM2608
- OPN3: YMF288
- PSG: AY8910, YM2149, JFC95101, KC89C72, YMZ284
- DCSG: SN76489
Music Modules
- RE2-YM2151
- RE2-YM2608
- RE2-YMF262
- RE2-YM3812/3526
- RE2-YM2413
- RE2-PSG/SSG+SSGL
- RE2-YMF276/288/289
- RE2-YM2203
- RE2-YM2612+SN76489
- RE2-NBV5/AYB03 Convert Board
Mainboard
- SPFM Lite (2 card slots)
- IAP-RESPFM (4 card slots)
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 at the cost of an amateur project. 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.