/pub/cbm/schematics/cartridges/c64/sfx/

The Commodore SFX Sound Expander was designed by Richard Watts of Music Sales Ltd and sold by Commodore as part of the 'Commodore SFX' product line. The cartridge uses an FM synthesis chip, the YM3256 OPL, which is similar to the YM3812 OPL2 chip used in the AdLib and SoundBlaster cards for IBM PC compatibles.

demodisks@
Commodore SFX Sound Expander test/demo software

Files

analogue.jpg 1999-07-07 36113
Analogue part of the Sound Expander, reverse-engineered and hand-drawn by Richard Atkinson.
digital.jpg 1999-07-02 25640
Digital interface of the Sound Expander, reverse-engineered and hand-drawn by Richard Atkinson.
sfx-sch.gif 2000-10-06 166810
Schematic for the Commodore C64/C128 Sounder Expander cartridge. Both analogue and digital parts; reverse-engineered.

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