Audio Subsystems

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The majority of ThinkPad's have Audio controllers.

Cirrus Logic

The Cirrus Logic Crystal audio chips have been used in vast amounts of ThinkPad's.

ISA only

  • CS4236B
    • ThinkPad 380 / 380D / 380E / 380ED
  • CS4237B
    • ThinkPad 380Z
    • ThinkPad 560X / 560Z
    • ThinkPad 600 / 600D
    • ThinkPad 770 / 770D / 770E / 770ED
  • CS4248
    • ThinkPad 750 / 750C / 750CS / 750P
    • ThinkPad 755C / 755CS

PCI only

  • CS4229
    • ThinkPad i1200
    • ThinkPad i1300

ISA and PCI

The reason for having both a legacy ISA chip and newer PCI chip is that the PCI chips cannot provide legacy SoundBlaster compatibility for DOS applications (games).

In such cases, if possible only the PCI driver should be loaded.

  • CS4297A / CS4281
    • ThinkPad 240X
  • CS4297 / CS4280
    • ThinkPad 570 / 570E
  • CS4239 / CS4610
    • ThinkPad 600E
    • ThinkPad 770X / 770Z
  • CS4297A / CS4624
    • ThinkPad 600X
    • ThinkPad T20 / T21 / T22 / T23
    • ThinkPad A21e / A22e
    • ThinkPad A20m / A21m / A22m
    • ThinkPad A20p / A21p / A22p
  • CS4297A / CS4281
    • ThinkPad X20 / X21 / X22 / X23 / X24
    • ThinkPad Transnote
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