MAESTRO(4) BSD Kernel Interfaces Manual MAESTRO(4)
maestro -- ESS Maestro 1 and 2 audio device
maestro* at pci?
audio* at maestro?
The maestro driver supports ESS maestro 1, 2 and 2E, including OEM prod-
ucts that identify as NEC Versa, or NEC VersaProNX VA26D, as long as they
use an AC'97 compliant codec, which is always the case, except for very
early models. It does not support maestro 3 cards, which are entirely
different and supported by the esa(4) driver.
Maestro cards have direct support for 16 bit signed little-endian mono
and stereo, 8 bit signed and unsigned mono and stereo. Other encodings
are emulated in software. Sampling range is 4000 - 48000 Hz, with
roughly a 2 Hz resolution.
Maestro cards have some DSP and Dolby Digital 5.1 hardware, but this
driver does not support it.
Other functions of maestro cards (modem, joystick) are not supported.
PCI interrupt sharing works, as long as other devices comply too.
ac97(4), audio(4), esa(4), intro(4), pci(4)
Maestro hardware information was gleaned from the FreeBSD and Linux OSS
David Leonard and Marc Espie.
Very old cards with a PT101 mixer component should have partial support,
e.g., the mixer does not work.
Recording should work soon.
BSD March 28, 2017 BSD