ASCAUDIO(4) (mac68k)

ASCAUDIO(4) | Device Drivers Manual (mac68k) | ASCAUDIO(4)

# NAME

`ascaudio` — MAC68K Apple Sound Chip (ASC) built-in audio.

# SYNOPSIS

`ascaudio* at obio? flags 0x00`
`audio* at audiobus?`
`spkr* at audio?`
`wsbell* at spkr?`

# DESCRIPTION

`ascaudio` provides an audio device for the (Enchanced) Apple Sound Chip. It is implemented as an audio(4) device.

# CONFIGURATION

The `ascaudio` driver supports the following flags for use in config(1) files:

`0x0` (`DEFQUALTY`):
  22257Hz Monaural playback.
`0x1` (`LOWQUALITY`):
  Half playback rate. Monoaural, intended for machines with slower clock rates.
`0x2` (`HIGHQUALITY`):
  Best Quality supported by ASC. This would be stereo on equipped machines.

# BUGS

Recording only works on some machines as audio routing is required, yet not fully analyzed.

# SEE ALSO

mac68k/asc(4), audio(4), spkr(4), wsbell(4)

July 29, 2024 | NetBSD 11.0