http://techreport.com/onearticle.x/1441 <------ i still want this to be a reality. I know i'd get in line and gladly pay up to $100 for a pci card that could play dc stuff. Of course the whole gdrom thing would have to be worked out(but nothing that couldnt be overcome).
A DC PCI card is a very nice idea but unfortunately I don't see it happening.
An Amiga based PCI card was promised many many years ago but it never go off the drawing board. I believe a DC PCI card would fail for the same reasons.
There are three problems.
Firstly, interfacing the DC to a PC is going to be trickier than most people realise and therefore cost a lot in terms of research and development.
Secondly, this would only be a niche product and therefore the manufacturer wouldn't be able to achieve the volume of sales required to bring the price per unit down to a reasonable level.
Thirdly, it would have to compete with emulators such as Chankast. Chankast may be slower and more buggy than a real DC at the moment but by the time the PCI card reached market Chankast might well be as fast as the real thing.