This is a very dishonest statement regarding the Indivision ACA cards. I've got one of the original ACA1230@56 cards and it's the fastest 030 card I've ever owned. Works with everything and is PCMCIA friendly. If you're referring to the fact that one simple line must be added to the startup-sequence to fine tune the card then your statement is exaggerated to say the least.
My only wish is that it had an option for an FPU.
I like Jens but I have a brand new ACA card that I've tried on four different A1200s and it works on none. I've tried both Jens and where I bought it and they say, it must be your computer. So now it's a nice paper weight