Of course I learned a lot from what fagear did and it especially helped with the GAL code. Without fagear, this would have been a lot harder. My only motivation was getting the card, not earning money. Im selling my spare, not a product. So yes, I profited from fagear here, but not financially. Big thanks to him!

Oh by the way fagear: it looks like your assumption of BASE+0x04 and BASE+0x05 for the joystick is wrong. The 1989 version of sim city supports covox sound master joystick, but never reads these addresses when configured to work with it.
My copy of the CSM works flawlessly with your (really nice!) testing tool, but not with sim city when it comes down to joystick support.

Physikant wrote on 2024-06-15, 13:51:

it looks like your assumption of BASE+0x04 and BASE+0x05 for the joystick is wrong. The 1989 version of sim city supports covox sound master joystick, but never reads these addresses when configured to work with it.

Hmmm, interesting. I didn't find any game to test joysticks with, so I've never tested those ports anywhere except my own tool.
Thanks, I'll look into Sim city for testing.

Physikant wrote on 2024-06-15, 13:51:

My copy of the CSM works flawlessly with your (really nice!) testing tool

Nice!

By the way:
Is anybody here interested in untested SN76489 to AY-3-891x parameter conversion code?
Both my AY-3-891x hardware projects, a compact AY-LPT and a Mindscape Music Board compatible, are currently dormant, but I already have some code.