The SW60XG and XG-Gold were a piece of cake... immediate success, while the HardSid turned out to be a lemon.
(I can only pray the 4 chips are still ok, there’s a repair trace on the card that I couldn‘t male sense of)
Will use a Teensy (Arduino) as test environment once it arrives.
(someone designed a minimal interface and a piece software to address the SID)
The motherboard is of course not the definitive Scope host, with just 7 reliable Masterverbs.
It was an interesting experience, though: in lack of vcore access in bios I bent one of the voltage selection pins and vcore dropped (as expected) from 1.66V to 1.2V, idle at 34 Celsius and fully engaged 38 (the idle temperature with 1.66V).
But it needs only minimal cpu fan rotation. Really cool... in the true sense of the word. :8
Atm the system is slaved to an Audient ID22’s Adat as clock source and a Luna as PCI master for low latency.
The Luna has it‘s own interupt, but when the „clock Pulsar One“ happened to share with the onboard graphics it was clicking galore.
I‘d rather guess a bad optical cable or some Adat trouble... so it‘s worth checking IRQs if the digital connection misbehaves.
Since one of the Pulsars was heavy solder battered anyway (my 1st attempts to recap back then

) and the TDM cable had only 2 connectors, I improvised a 3rd one by adding a regular 20pin flat ribbon connector and soldered a counterpart twin row of posts to the board. The twin row fits perfectly and is easy to solder.
The decision was influenced by the local supplier, who used to have the classic connectors, but ran out of stock and I couldn‘t find any parts online. It‘s an ugly alternative, but cheap and omni-present... please forgive me...
