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General Information The SFG-05 / SFG-01 FM-units are built around the YM2151 / YM2164 OPM chip. These IC's have 4 operators and are for example used in the cheaper Yamaha DX series (e.g. the DX-9, FB-01), several arcade games and the Korg(!) DS-8 and 707. To program this chip, there are two memory locations available (register select and data) see the Music function I/O map for details. Downloads: PDF Documents (Requires Adobe Acrobat reader):  CX5M-I
Service Manual (PDF, 3.1MB)CX5M-II
Service Manual (PDF, 3.8MB) YM2151
Datasheet (PDF, 246KB) The 4-operator FM from the SFG modulesYM2151
Register description (PDF, 1.3MB) A detailed document
about programming the YM2151AY8910
Datasheet (PDF, 905KB) Standard 3 channel MSX
audio and I/OI don't have information about the YM2148 which handles the MIDI and Keyboard scan but my guess is that it works the same way as embedded in the later YM8950 IC GIF images: CX5M(II)
Connectors (GIF, 48KB)CX5M
Power supply (GIF, 53KB)SFG-01
Circuit Diagram (GIF, 97KB)SFG-05
Circuit Diagram (GIF, 87KB)HTML files: Music
function I/O map (HTML) How to access the SFG from
the computerProgramming
the YM2151 (by NYYRIKKI ) HTML document of the YM2151
datasheet (with 'find-routine')SFG-05/01
to MSX Cartridge adapter Originally sold as the UCN-01 (Yamaha Unit Connector) |
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