no-sound:
$0A06: 8D30C0 -> AD30D0 (context is 8D30C0CAD0F54CF909)
$0A2B: 8D30C08D30C08D30C0 -> AD30D0AD30D0AD30D0
$439C: 2C30C0 -> 2C30D0 (context is 2C30C08810F1E8E010D0EA60)
$6544: AD30C0 -> AD30D0 (context is AD30C088D0F1CAECF164)
$8B92: AD30C0 -> AD30D0 (context is AD30C088D0F1CAEC3F8B)

$54C0: A9008D -> 4C0001 to exit on keypress (context is AE00C01013A9008D00804C0608)
$0980: 4C6208 -> 4C0001 to exit at end of demo cycle (context is 4C6208AD5B82F025)