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Mockingboard

The Mockingboard is a slot sound card (AY-3-8910 / 6522) used by many Apple II games and demos. GSSquared emulates one or two cards (up to four voices). The implementation passes the mb-audit test suite.

How to enable it

In the config editor

  1. Open + or Edit… from System Select.
  2. Click a slot (often 4, and 5 for a second card) and pick Mockingboard.
  3. Save and launch.

Two Mockingboards in different slots are allowed. Ultima V is the usual title that uses both.

In a .gs2 file

[[cards]]
slot = 4
card = "mockingboard"

Using it

Boot software that expects a Mockingboard in that slot. Drive seek sounds are separate (motherboard / floppy); Mockingboard is the AY/6522 path.

Settings → Mono Helper decorrelates the right channel so Mockingboard stereo is easier to hear on a single speaker or a mixed-down recording. See Menus.

There is no Sound menu and no master-volume slider. Use the host OS volume.