playtone 81 dev/isa/spkr.c static void playtone(int, int, int); playtone 299 dev/isa/spkr.c playtone(pitch, timeval, sustain); playtone 337 dev/isa/spkr.c playtone(pitch - 1, value, sustain); playtone 356 dev/isa/spkr.c playtone(-1, timeval, sustain);