tag

#fm-synthesis

3 posts

RetrogamingDeep Dive October 4, 2026 7 min read

Sega Genesis YM2612 Channel 3 Special Mode: Four Frequencies, One FM Channel

Decode YM2612 register 27h special mode, map channel 3 operator frequencies, preserve timer controls, and test key-on and frequency-latch behavior.

#sega-genesis#megadrive#ym2612

RetrogamingDeep Dive October 4, 2026 8 min read

Explain the Mark III and Japanese Master System YM2413 path, from F2 control and hardware detection to OPLL instruments and rhythm-mode testing.

#sega-master-system#ym2413#fm-synthesis

FreeDOSDeep Dive October 3, 2026 8 min read

Build a deterministic AdLib OPL2 voice by respecting address/data timing, operator register groups, channel frequency fields, and key-on cleanup.

#freedos#dos#adlib