MirOS Manual: maestro(4)

MAESTRO(4)                 BSD Programmer's Manual                  MAESTRO(4)

NAME

     maestro - ESS Maestro 1 and 2 audio driver

SYNOPSIS

     maestro* at pci? dev ? function ?
     audio* at maestro?

DESCRIPTION

     The maestro driver supports ESS maestro 1, 2 and 2E, including OEM pro-
     ducts that identify as NEC Versa, or NEC VersaProNX VA26D, as long as
     they use an AC97 compliant codec, which is always the case, except for
     very early models. It does not support maestro 3 cards, which are entire-
     ly 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.

SEE ALSO

     ac97(4), audio(4), esa(4), intro(4), pci(4)

HISTORY

     Maestro hardware information was gleaned from the FreeBSD and Linux OSS
     drivers.

AUTHORS

     David Leonard and Marc Espie.

BUGS

     Very old cards with a PT101 mixer component should have partial support,
     e.g., the mixer does not work.

     Recording should work soon.

MirOS BSD #10-current          January 13, 2001                              1

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