rkauer, I don't have 2.05 ROM. I have the A500/2000 version 2.04 ROM. No IDE controller in that one.
TJLazer, I'm persisting with it because it's what I've got at the moment and I'd prefer to use workbench 2.1 than 1.3
Never mind though, I'll give it a rest until I get these other chips and can give them a try.