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Sound support

Summary

Native Oberon supports SoundBlaster and compatible cards and equivalent on-board sound controllers. A true SB card can be detected automatically.

How to install a sound driver - Configure Oberon.Text

You have to edit the Sound.Audio group in Oberon.Text. To determine the correct settings required:

The preset values are:

  Port = 220H 
  IRQ = 7          see IRQ 
  LowDMA = 1       the DMA channel for byte transfers 
  HighDMA = 7      the DMA channel for word transfers (16-bit) 
  compatible = -1  -1: true SB (autodetect); and for 
                   compatibles: 0: SB1.5; 1: SB2.0; 2: SBpro; 3: SB16 
                   Other values are invalid.

Sound tools (Sound.Tool)

Modern sound cards include a mixer. Depending on the ancienty of the sound card, a different mixer type (DSP) or none is available for which Oberon offers a corresponding custom GUI:

  DspVersion  # of channels    Mixer GUI 
      4            15          MixerSB16.Panel 
      3            10          MixerSBPro.Panel 
      2.01          4          MixerSB.Panel 
   anterior        none        No mixer available

Release differences

The 2.3.6 release had separate IDE driver modules for hard disk and audio CD (a bad design for historical reasons). For the beta and alpha releases, the IDE driver was rewritten to support more modern IDE (ATA) drives, but the audio part of the CD driver has not been done yet. So the beta and alpha releases do not support the CDAudio panel.

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21 Jul 2002 - Copyright © 2002 ETH Zürich. All rights reserved.
E-Mail: oberon-web at inf.ethz.ch
Homepage: http://www.ethoberon.ethz.ch