CD Audio Header

[jasonsbeer]

ISSUE: Add internal header for CD Audio, such as found on the Amiga 4000.

SEVERITY: Enhancement request.

SCOPE: Future revision.

PROPOSED FIX: Review A4000 schematics and include similar solution.

[darrenfreeman]

Note that the addition of the A4000 CD header introduced a design flaw - C433/C443 (final AC coupling capacitors) have a reversed DC voltage under most conditions. The usual fix is to reverse these caps during recapping, however I think it is possible for software to deliberately reverse this voltage again with properly chosen DAC outputs.

This defect is not especially serious, as the voltage is only about -1.1 V. Still, it should not have been in production like this.