Well I made a bit of an breakthrough today. Finally figured out how to use that slot 1 adapter. I had 2, one was pretty useless with no jumpers and nothing on it.
But the other one had a lot of jumpers. It's a MSI jumper and although not compatible with tualatin, it does take all the coppermines. What I didn't know initially was that you need to overclock your BX440 mainboard to get the full speed out of these 133 FSB cpus.
There is also another setting 112 MHz or something. Well 133 worked just fine. No issues so far. So it ran my 1 GHz coppermine at full speed and without a hitch.
Earlier I had a lot of crashes in Wing Commander, but at one point I could read the error message and it had emm386 written all over the screen. So I booted with only himem.sys and the game ran just fine. I guess there is a issue with the emm386 from FreeDos. I will try Dos 6.22 at another point in time.
Speedwise at FSB 133 / 1 GHz / 133 SDRAM Wing Commander runs at a perfect speed. Wing Commander is a bit all over the place speed wise. When nothing is going on its a bit to fast and when there are many ships its a bit to slow. But on average it's perfect.
So my next step is to find a sloket that can handle tualatin cpus and see how fast I can take this machine 😁
PS: Man Wing Commander is so much fun. I played through the first 4 or 5 missions and it's way past bed time 😮
I can't wait to replay all these classics with Roland Sound. At last!