I had to exchange my flash cart because it was broken. It has been almost a month, but ic2005 said they sent it out today. Once I get the cart (hopefully sometime next week) I will test this for my USA turbografx 16 and let you know how it goes.
on a side note for Dr. Neo, ic2005 is a horrible site with terrible customer service. I have no idea why you let them handle your flash carts, and why they are the only ones who sell the pc-engine cart. I had to wait at least 3 or 4 days for a reply from them every time I had a question, and as I stated, this exchange has taken about a month so far! I would look into other ways of distributing my products if I were you. Why not open a store on Amazon.com or even ebay.com that you can manage yourself?