=Technical information=
I/O Ports:* Port &F988: read status 0 or select a page 0 register (for SSG, digidrums and the first 3 FM chans)* Port &F984: read status 1 or select a page 1 register (for the last 3 FM chans)* Port &F888: read/write to the selected register
You can also use the CRTC cursor registers to program the raster interruption ([[NMI]]) located at &0066.
6 digidrum instruments are included in the internal ROM of the soundchip.
Relevant datasheets: *[[Media:YMF288.pdf|OPN3 (ymf288) (Japanese)]] and *[[Media:YM2608J Translated.pdf|OPNA (ym2608) (English)]] [https://framagit.org/offset/play2cpc-acepansion Play2CPC ACEpansion] on Framagit
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