b2k24: I can't thank you enough. Your ini file is what fixed my problem. after I used your ini it worked so I was hell bent on figuring this out. I went line by line with your .ini and my .ini and it was the last setting that did it. The setting is yiq_phase_count 1 . Mine was set to a value of 2. There were other problems I had but I didn't mention them because I knew if I got galaga working they would work as well and I didn't want to overwhelm everyone with a list but here is what that 1 setting fixed.
Burgertime when rotated for cocktail and cocktail bit set would blank out on the first players second turn. Same with Digdug. Galaga would blank after the white grid. I am sure there are other but those are the ones I knew of.
I guess I am curious as to what that setting does and I thought if the setting yiq_enable 0 was set that the values below would be ignored.