OPL3SA2_SYS_CTRL 277 sound/isa/opl3sa2.c snd_opl3sa2_write(chip, OPL3SA2_SYS_CTRL, (chip->ymode << 4)); OPL3SA2_SYS_CTRL 280 sound/isa/opl3sa2.c snd_opl3sa2_write(chip, OPL3SA2_SYS_CTRL, 0x00);