|HARMONY(4)||Device Drivers Manual (hppa)||HARMONY(4)|
harmony* at gsc? irq 13
audio* at harmony?
harmonydevice uses the Crystal Semiconductor CS4215 16-Bit Multimedia Audio Codec or Analog Devices AD1849 SoundPort(R) Stereo Codec chip to implement the audio device interface described in audio(4). This device is found on most HP PA-RISC workstations. The
harmonyhas a maximum precision of 16 bits and has a stereo input and stereo output.
On HP 9000/712 models
provides two additional channels for an add-on card with two fax/voice
One of the hardware registers reflects the state of the CHI bus that is used to communicate with the codec and thus being sampled at a low accuracy secondary frequency (such as timeout(9)) produces poor quality random bit stream that is fed into the entropy pool of random(4).
harmonyfirst appeared in OpenBSD 3.3.
|May 31, 2007||OpenBSD-current|