Hmm, everything I've read so far says to use a PS2 mouse, so that's what I have and there are no issues with it.
I'm still stuck on a few things, though:
1 - the Geforce 7800 GTX PCIe card - seems to only work in vesa? I don't think it's problematic but running such a powerful card in VESA seems like a waste. I've tried booting 3.10 kernel, kernel 4, etc., with various menu.lst entries and Picasso96 can only ever find card0-vesa
2 - Using any web browser causes guru meditations or the system freezes, but only when the NIC is active. I've ordered a separate fully supported NIC to try to fix this
3 - Poseidon sees my flash drive when I insert it but it fails enumeration each time, no matter what port..?
4 - No sound. Ordered SB128. Hopefully that works.
5 - HDToolBox could only see a small portion of my &76 partition, and it could only make a couple partitions for Amithlon using a fraction of the available space. I feel like I wasted a ton of space. Is there a way to get it to play nice with my ~130 gigs?
6 - Using ffs, because that's what was on the CDRom, and I couldn't format my drives from within winuae mounting the &76 partition. How would one use pfs3 or something more modern?