If you want IDE without chewing up your CPU i'd wait for the Zeus68k (im prolly gonna get one myself once they are ready):
http://eab.abime.net/showthread.php?t=65047
I wouldnt waste your time on Jen's aca500, that thing is an insult to a500 owners with it's pathetic 2mb ram and 14mhz 68k - he should make a proper accelerator for the 500 and if he wants a500 owners to buy his aca12xx boards he should just make a bloody adapter with no redundant ram, no redundant CPU and just IDE + some useful stuff like Ethernet and USB!
+1
I was PISSED when I saw how low-spec it was for around a c-note. To add insult to injury, you have to spend another 200$, to get something adequate, by stacking an ACA1230 on top of it. I get what he's trying to do, but to be honest, I would have much rather had an accelerator based off the ACA1230, but specifically for the A500.
Or better yet, Clone-A......