The last time I sold a Turbo040 (several years ago), I included extra ROM versions for free. [
] ]'>Do you have a full 68040 installed or an LC version? I ask because in my experiments (again, several years ago) I found that the 'i' version needed a different ROM from the latest 4.11 otherwise it would not work properly. I don't remember if "would not work properly" was wouldn't boot up at all, or if it was subtler incompatibilities which made their presence known over time.
Hmmm. I started keeping a lab notebook for this stuff way back when. I wonder if those experiments made it into there. If I ever remember when I'm home, I'll check.
This is where you need Gamba's IIci ROM. It would be interesting to know whether you have the same issue with the IIci ROM, especially because the Turbo040 is designed for the IIci. However, my guess is that Artmix's board is simply too high/long. He has extended those traces an awful lot, and the floppy drive seems more sensitive to timing than any other component. Still, at 16 MHz I would have thought that he could get away with it.
But those are just hypotheses. We need experiments!
JDW, if you would like to borrow one of my IIsi adapters, email me at trag@io.com. I'm not sure if you've made the connection, but I, trag, am the Jeff Walther you just bought two sets of capacitors from recently. It probably will cost less than $10 to ship each way. You would have to do the experiment outside the SE/30 chassis, as I've never purchased a right angle Euro DIN and won't be doing a Digi-Key order any time soon.